УСТРОЙСТВО ДЛЯ ПОЛУЧЕНИЯ РЕНТГЕНОВСКОГО ИЗЛУЧЕНИЯПОВЫШЕННОЙ ИНТЕНСИВНОСТИ

ИНТЕГРИРОВАННОЕ УСТРОЙСТВО КОЛЛИМАЦИИ И КАЛИБРОВКИ ДЛЯ СИСТЕМЫ ОСМОТРА КОНТЕЙНЕРА

Интегрированное устройство коллимации и калибровки для системы осмотра контейнера, содержащее блок (1) коллимации, блок (2) калибровки, основную плиту (15), двигатель (4) и множество несущих блоков (13), которые закреплены на основной плите (15), узел (5, 8, 10) передачи, связанный с выходным концом двигателя для передачи перемещения двигателя к несущей плите (11), отличающееся тем, что устройство дополнительно содержит скользящую плиту (12), стационарную плиту (3), установленную на скользящей плите и жестко соединенную со скользящей плитой (12), в котором блок (1) коллимации и блок (2) калибровки установлены на стационарной плите (3) для образования интегрированной конструкции, причем агрегатный зазор (9) образован между блоком (1) коллимации и блоком (2) калибровки, в результате чего блок (1) коллимации и блок (2) калибровки на стационарной плите (3) приводят в действие узлом (5, 8, 10) передачи и несущей плитой (11) с возможностью интегрированного перемещения. Технический результат: ...

УЗКОПОЛОСНАЯ РЕНТГЕНОВСКАЯ УСТАНОВКА И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

... 1. Узкополосный рентгеновский фильтр, содержащий подложку, а также пакет из одного или более отражательных блоков, уложенный один на другой на подложку, причем каждый отражательный блок включает в себя первый комплект по меньшей мере из двух отдельных проставок на соответствующей базовой детали, отражатель, размещенный на первом комплекте проставок таким образом, что образуется полость между соответствующей базовой деталью и отражателем, а также первый комплект по меньшей мере из двух отдельных прокладок, расположенных на первом комплекте по меньшей мере из двух отдельных проставок, причем каждая прокладка имеет по меньшей мере по существу такую же толщину, что и отражатель. 2. Фильтр по п.1, отличающийся тем, что каждый отражатель содержит несущий слой, а также пакет из одного или более зеркал, где каждое зеркало содержит слой металла с большой атомным номером Z, а также слой углерода на этом слое металла. 3. Фильтр по п.2, отличающийся тем, что металл с большим атомным номером Z содержит ...

ФОКУСАТОР ЛАЗЕРНОГО ИЗЛУЧЕНИЯ

... 1. Фокусатор лазерного излучения, содержащий входной и выходной аксиконы, периферийные отражающие поверхности которых расположены на корпусе, а внутренние отражающие поверхности смонтированы на стержне, связанном с корпусом пилонами, отличающийся тем, что он снабжен устройством для подачи хладоагента, двумя соплами и герметичной перегородкой, при этом стержень с внутренними отражающими поверхностями аксиконов выполнен полым и разделен на два отсека герметичной перегородкой, сопла закреплены на боковых поверхностях герметичной перегородки, размещены в отсеках с образованием каналов для прохода хладоагента, а их выходы направлены в стороны внутренних отражающих поверхностей аксиконов, в одном пилоне выполнены каналы, входы которых подсоединены к устройству для подачи хладоагента, а выходы гидравлически связаны с отсеками, которые гидравлически связаны с каналами для выхода хладоагента, предусмотренными во втором и/или третьем пилоне. 2. Фокусатор по п.1, отличающийся тем, что полость стержня ...

КОЛЛИМАТОР НЕЙТРОНОВ

СПОСОБ ИЗГОТОВЛЕНИЯ МНОГОКАНАЛЬНОГО КОЛЛИМАТОРА ДЛЯ ГАММА-РАДИОГРАФИИ

Изобретение относится к способу изготовления многоканального коллиматора для гамма-радиографии и может быть использовано в импульсной гамма-радиографии быстропротекающих процессов. Способ осуществляется путем формирования коаксиальной слоеной структуры, состоящей из чередующихся оболочек из материалов с высоким и низким коэффициентом поглощения гамма-излучения с образованием каналов для прохождения прямопролетного излучения. Причем тело коллиматора формируют набором конических оболочек переменной толщины, при этом оболочки изготавливают намоткой фольги встык на каркас в виде цилиндра, каркас выполняют из материала с низким коэффициентом поглощения, каждую оболочку выполняют многослойной. Техническим результатом является улучшение качества рентгеновских изображений за счет эффективного подавления рассеянного излучения. 1 з.п. ф-лы, 4 ил.

Способ изготовления диафрагмы для фокусировки или отсечки излучения

Изобретение относится к ускорительной технике, а более конкретно - к способам изготовления диафрагм, используемых в ускорителях тяжелых частиц для фокусировки или отсечки излучения. Цель изобретения - повышение срока службы диафрагмы. Для этого диафрагму изготавливают путем нанесения на медную пластину слоя ниобия путем бомбардировки пластины диспергированным взрывом жидким ниобием . 1 ил. сл С ...

Устройство формирования электронного пучка для лучевой терапии

Изобретение относится к использованию ускорительной техники для лучевой терапии Цель изобретения - повышение эффективности и безопасности лучевой терапии областей патологии , расположенных за спинным мозгом по ходу электронных пучков. Для этого в ограничивающем тубусе установлены два поворотных щелевых коллиматора 4,5 со сходящимися щелями 8,7, со стороны тубуса закрытыми рассеивающими фольгами 9, 10. Зона между коллиматорами 4,5 закрыта поглощающим элементом 6 в виде рассеивающего клина. 3 з.п. ф-лы, 2 ил. t ...

КОЛЛИМАТОР РЕНТГЕНОВСКИХ ЛУЧЕЙ

Method for manufacturing scattered radiation grid from electrical conductive plate of different materials for X-rays in diagnostic radiology, involves galvanically deposing material on upper surfaces of openings of scattered radiation grid

The method involves galvanically deposing a material on upper surfaces of openings (6) of scattered radiation grid, where the material absorbs X-rays. The material is provided as a heavy metal, where the openings form a slot or hole. The opening are formed in an electrical conductive plate (8), where another material (2) is made of aluminum, magnesium or graphite. A third material (3) is provided as coating or a film, where a fourth material is provided as plastic and fifth material is provided as palladium.

ANORDNUNG ZUR MESSUNG DES IMPULSUEBERTRAGES

PRIMAERSTRAHLENBLENDE

Bilderzeugungsverfahren und -vorrichtungen

Vorrichtung und Verfahren zum Bestimmen der Position eines entlang einer zugeordneten Achse linear beweglichen Teils

Vorrichtung zum Bestimmen der Position eines entlang einer zugeordneten Achse linear beweglichen Teils (10), wobei dem zumindest einem Teil (10) ein sich in Richtung der zugeordneten Achse erstreckendes Referenzelement (12) zugeordnet ist, mit welchem das Teil (10) in mechanischen Kontakt bringbar ist, wobei an dem Referenzelement (12) ein jeweiliger Piezowandler (22) zum Erzeugen und Empfangen von Schwingungen im Material des Referenzelements (12) angeordnet ist, wobei der mechanische Kontakt zwischen dem Teil (10) und dem Referenzelement (12) durch ein Gleit- oder Rollelement (18) erzeugt wird, dadurch gekennzeichnet, dass das Referenzelement (12) und das Gleit- oder Rollelement (18) magnetisiert sind.

ASYMMETRISCHER S.P.E.C.T.-KOLLIMATOR, DER DEN PATIENTEN UMGIBT.

"ROENTGENUNTERSUCHUNGSANORDNUNG MIT HOHER ORTSAUFLOESUNG"

RÖNTGENVORRICHTUNG, VERFAHREN ZUM VERWENDEN DER RÖNTGENVORRICHTUNG UND RÖNTGENBESTRAHLUNGSVERFAHREN

SCHLITZRADIOGRAPHIEGERÄT MIT ABSORPTIONSELEMENTEN UND VERFAHREN ZUR HERSTELLUNG VON ABSORPTIONSELEMENTEN.

ABSORPTIONSMITTEL FUER ROENTGENSTRAHLEN

Konturkollimator mit einer für Röntgenstrahlung undurchlässigen Flüssigkeit und zugehöriges Verfahren

Die Erfindung gibt einen Konturkollimator und ein Verfahren zur Einstellung einer Kontur (1) eines Strahlengangs einer Röntgenstrahlung an, wobei eine rotierende, für Röntgenstrahlung undurchlässige Flüssigkeit (4) die Kontur (1) bildet. Die Erfindung bietet den Vorteil eines einfach und robust zu betreibenden Kollimators für Röntgenstrahlung zur Bildung einer Kontur.

Röntgendiagnostikgerät mit einer Röntgenröhre und einem Blendengehäuse

Röntgendiagnostikgerät mit einer Röntgenröhre (3) und einem Blendengehäuse (4), in dem Blenden (9) zum Abgrenzen eines Röntgenstrahlenfelds und in dem eine Lampe (14) und ein Spiegel (13) vorhanden sind, die derart angeordnet sind, dass bei eingeschalteter Lampe (14) das von der Lampe (14) ausgehende Licht vom Spiegel (13) derart reflektiert wird, dass das reflektierte Lichtstrahlenfeld im Wesentlichen mit dem gewünschten Röntgenstrahlenfeld übereinstimmt und in dem mindestens ein Filter (12) zum Filtern der Röntgenstrahlen angeordnet ist, dass der Spiegel (13) und das Filter bzw. die Filter (12) an einer Scheibe (10) angebracht sind, die um eine Achse (11) derart drehbar ist, dass das Filter oder eines der Filter (12) zur Röntgenaufnahme die Lage einnimmt, die der Spiegel (13) zuvor gehabt hat und wobei das oder die Filter (12) im Vergleich zur Scheibe (10) schräg gestellt ist bzw. sind.

EMISSION COMPUTED TOMOGRAPH

Gitter zur Absorption von Röntgenstrahlen

X-ray topography camera for routine real structure diagnostics

The X-ray topography camera according to the invention is suitable for accompanying diagnostics in semiconductor technology. The aim of the invention is to investigate the real structure even of macroscopically deformed crystals by means of X-ray topography. According to the invention, the X-ray topography camera using the principle of the known twin-crystal camera is specified which is constructed as a V-shaped structure whose plane is vertical, and consists of a primary beam tube, useful beam tube, connecting joint between the two and a device for setting the angle between the two. A collimator chamber is arranged on the connecting joint between the useful beam tube and primary beam tube, and contains a device for the defined curvature of the collimator crystal which is described in various configurations according to the invention.

Roentgenschirme

Verfahren und Vorrichtung zur Untersuchung von Proben

Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zur Untersuchung einer Probe mit von einer Neutronen- oder Röntgenstrahlungsquelle (0) emittierter Strahlung (8), die über zumindest eine strahlformende Einheit, zu der von einem Probenhalter (7) getragenen Probe (3) geführt und mit einem Detektor (5) detektiert und in einer Auswerteeinheit (30) ausgewertet wird. Erfindungsgemäß ist vorgesehen, dass vor Beginn der Untersuchung der Probe zumindest eine der folgenden Komponenten, nämlich Strahlenquelle (0) und/oder strahlformende Einheit (1, 2) und/oder Probenhalter (7) und/oder Detektor (5) und/oder gegebenenfalls ein dem Detektor (5) vorgeordneter Primärstrahlenfänger (4), relativ gegenüber zumindest einer der anderen Komponenten (0, 1, 2, 4, 5, 7) und/oder bezüglich eines vorgegebenen Fixpunktes und/oder bezüglich dem Strahlengang (9) mit einer Steuereinheit (6) über Stellantriebe (11) ausgerichtet und/oder bezüglich ihrer räumlichen Lage eingestellt wird, wobei zur Erstellung ...

Einrichtung zur Bestimmung der Intensitaet von Roentgen- und aehnlichen Strahlen

Vorrichtung zum Bestrahlen mit Radium

Vorrichtung zum Prüfen von Schutzumhausungen bei geringer Strahlungsexposition

Hand- oder maschinengeführtes Strahlungsmessgerät (2), das beim Messen an das Schutzgehäuse (3) berührend angelegt ist und die Expositionen von ionisierender Strahlung (7, 8) mit geringer Photonenenergie aus Spalten und Löchern (4) sowie die Wände und Fenster (5) durchdringende Strahlung insbesondere von Lasermaschinen, Röntgengeräten, Behältern und Räumen mit inneren Strahlungsquellen detektiert, umfassend einen Abstandshalter (1) mit einem Boden (12) mit mindestens einem Detektor (9), dadurch gekennzeichnet, dass der Abstandshalter (1), der mit einem Gleitring (14) in seiner Frontfläche berührend am zu prüfenden Schutzgehäuse (3) anliegt, eine Gitterstruktur (11) aufweist, die frontal eindringende Strahlung (7) und seitlich eindringende Strahlung (8) nicht behindert, den Messabstand (10) zwischen den zu prüfendem Schutzgehäuse (3) und dem Messschwerpunkt (13) des mindestens einen Detektors (9) bildet.

Analysengerät mit Wechselapertur

Die Erfindung betrifft ein Analysegerät, insbesondere ein Einkristall-Röntgendiffraktometer, mit einer Strahlungsquelle zum Aussenden von Strahlung, insbesondere Röntgenstrahlung, einer Optik, einem Probenhalter für mindestens eine zu analysierende Probe, die entlang eines Strahlengangs von der Strahlungsquelle über die Optik mit einem Strahl beleuchtet wird, und mit einem Detektor zum Detektieren der von der Probe ausgehenden Strahlung sowie mit mindestens einer Wechselapertur zur Begrenzung und effektiven Verschiebung des Strahls in zwei Richtungen in Form einer drehbaren gelochten Scheibe oder eines verschiebbaren gelochten Bands.

Kollimatorlamellenausrichtungsmittel, Kollimatorlamellenausrichtungsvorrichtung und Verfahren zur Herstellung eines Strahlungskollimators

Die Erfindung betrifft ein Kollimatorlamellenausrichtungsmittel (10), eine Kollimatorlamellenausrichtungsvorrichtung und ein Verfahren zur Herstellung eines Strahlungskollimators. Zur besonders einfachen und genauen Ausrichtung der Kollimatorlamellen (1) ist vorgesehen, dass das Kollimatorlamellenausrichtungsmittel (10) zwischen einer Positionier- und Ausrichtungsstellung drehbar ist, wobei eine der Positionierstellung zugeordnete erste Dicke (D1) kleiner und eine der Ausrichtungsstellung zugeordnete zweite Dicke (D2) gleich der Lamellenbeabstandung (L) ist.

Collimator for beam detector e.g. X-ray detector useful in computed tomography unit, comprises collimator plates, and supporting elements constructed from material transparent to X-rays and support collimator plates laterally

A collimator (12) for a beam detector, comprises at least two juxtaposed collimator plates (20); and at least one supporting element (13), arranged between at least two juxtaposed collimator plates, for stiffening the collimator. The supporting elements are constructed from a material transparent to X-rays and support the collimator plates laterally. The collimator includes at least two supporting elements, interconnected in such a way that the collimator includes a device including slots between the supporting elements, each one slot being provided for holding a collimator plate.

X-ray generator

Orthoscopic diaphragms for roentgen ray working

... 439,728. R÷ntgen - ray screens. SIEMENS - REINIGER - WERKE AKT.- GES., 31, Karlstrasse, Berlin. Jan. 25, 1935, Nos. 2517 and 2518. Convention dates, Feb. 5, 1934 and Dec. 28, 1934. [Class 98 (i)] An orthoscopic screen for intercepting secondary radiation comprises an assembly of minute solid or tubular rods or needles, as of prismatic, cylindrical, truncated pyramidal, or conical form, made of ray-impermeable material such as lead, distributed irregularly but approximately uniformly over the area of the screen, the lengths of the rods or needles being substantially normal to the screen and directed towards a common point or line at a finite or infinite distance from the screen. Such a screen may be formed by cutting a disc of wood across the grain and filling its vessels as with metal, an alloy, or a lead compound ; or by perforating a plate with minute holes and filling them as with lead ; or by strewing pre-formed needles on a plate as of metal coated with a binding medium as of gelatin ...

Improvements in or relating to devices for controlling the speed of, and/or for smoothing, the movement of objects

... 644,459. Dashpots. GENERAL ELECTRIC CO., Ltd., and BRYER, R. F. Dec. 18, 1947, No. 33445. [Class 108(iii)] [Also in Group XX] A device for controlling the speed of movement and/or for smoothing the movement of one or more members, comprises, in combination, a piston head arranged to sweep out a portion at least of a cylinder containing fluid, connecting means joining one or more ports at each end of the cylinder so that movement of the piston head displaces fluid from one side of the head to the other and means for at least partially blocking the port or ports at either or both ends of the cylinder to decelerate the piston head when the latter is near the limit of its movement in one or both directions, the arrangement being such that the piston head is adapted to allow substantial flow of fluid through itself when the head is moving away from one end of the cylinder while the port or ports at that end is or are partially blocked. In the arrangement shown, a piston 2 which moves to displace ...

Improvements in or relating to devices to move the bucky grid in x-ray apparatus

... 713,935. X-ray apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 31, 1952 [Nov. 2, 1951], No. 27418/52. Class 98(1) A device for moving a Bucky grid with a sinusoidal or substantially sinusoidal speed characteristic is characterized in that upon the initial movement a periodic movement of higher frequency and in the same direction is superimposed. Preferably, the frequencies of the two movements are not in integral ratio. As shown, the Bucky grid 1 is fixed to a rod 2 movable in guides 3, 4. The two movements are applied to the ends of a lever 6 pivoted to the rod at 5. Alternatively, the movements may be derived from two electric motors and applied to the grid through a differential gear. The second movement may be derived, through gearing, from a motor supplying the first.

Improvements in or relating to grids for use in making x-ray pictures

... 385,260. Bontgen - ray apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. March 13, 1931, No. 7796. Convention date, March 15, 1930. Void [Published under Sect. 91 of the Acts]. [Class 98 (i).] A grid for intercepting secondary radiation consists of at least two parts, the laminations of which are arranged with their longitudinal axes entirely or partly oblique to the direction of travel and which are located relatively to one another in such a manner that the projections on the plane of the picture of the one part cut those of the laminations of the other part whilst these two parts travel in substantially opposite directions. The grid may be constituted by the two parts of an endless travelling chain, having strip shaped laminations oblique to the direction of travel. To ensure that the laminations readily pass round the rollers they may consist of a plurality of juxtaposed elements 3, Fig. 2, which join to elements of the preceding and ...

Collimation and calibration integrative apparatus for container inspection system

IMPROVEMENTS IN X-RAY SYSTEMS

In an X-ray system with a rotating disk having sector slits transmitting fan shaped X-ray beams from a source through a subject to the image area of an X-ray receptor an improved ratio S/P of X-rays (S) scattered from the subject to primary rays (P) forming a true image of the subject at the image area is realized if the dimensions of the system fall within the following ranges of dimensionless ratios: (1) DW/RL is less than 0.5; (2) D/L is greater than 0.15; (3) LS*N/WD is greater than 0.15 and less than 0.6 wherein D is the distance of the disk from the X-ray source, W is the width of the X-ray image area spanned by the narrow beams, R is the radius of the disk, L is the distance between the X-ray source and the receptor. S* is the radially outermost slit width in the X-ray beam, and N is the number of slits whose beams simultaneously intersect the outer edge of the image area.

IMPROVEMENTS IN X-RAY SYSTEMS

Rotatable X-ray scan apparatus with cone beam offset

An investigative X-ray apparatus comprises a source of X-rays emitting a cone beam centred on a beam axis, a collimator to limit the extent of the beam, and a two-dimensional detector, the apparatus being mounted on a support which is rotatable about a rotation axis, the collimator having a first state in which the collimated beam is directed towards the rotation axis and the second state in which the collimated beam is offset from the rotation axis, the two-dimensional detector being movable accordingly, the beam axis being offset from the rotation axis by a lesser amount than the collimated beam in the second state. The X-ray source is no longer directed towards the isocentre as would normally be the case; the X-ray source is not orthogonal to the collimators. This is advantageous in that the entire field of the X-ray tube can be utilised. As a result, a lesser field is required of the X-ray tube and the choice of tube designs and capacities can be widened so as to optimise the performance ...

APPARATUS AND SHUTTER FOR USE IN RADIOGRAPHY

Improved screen for secondary x-rays

... 490,255. Compound sheet materials. AKTIEBOLAGET LINHAM. April 26, 1937, No. 11896. Convention date, April 28, 1936. [Class 140] [Also in Group XX] In screens for intercepting secondary radiation in X-ray photography, comprising an inner portion of grid form consisting of thin lead plates with intermediate spacers of ray permeable material, the inner portion is protected on both sides with layers of flexible material, e.g. linen fabric secured at several points by means of an adhesive. As adhesives, natural and synthetic resins, casein latex, glue, or cellulose may be used. Specification 479,389, [Group XX], is referred to.

Radiographic installation with television monitor

The installation according to the invention practically eliminates the total irradiation of the radiologic examinated persons, using an X radiations source, which produces a swept filiform beam, synchronized with the sweep of a T.V. monitor. In this way the useless irradiation of the entire examined surface is avoided with a strict exception of a single image point useful at one given moment, image point which is transmitted to the T.V. monitor. There are given more achievement variants of the swept filiform beam, as: radioopaques screens with punctiform orifices or slits and radiodiagnosis tubes with swept emission point of the X radiation associated with antidiffusion grids which turn the swept X radiations beam into a swept filiform X radiations beam. The radiodiagnosis tube with swept emission point of the X radiations is utilized also for the achievement of a tomoscopy or an electronic tomography with the wipe in surface. In this purpose the desirable plane of the examinated object ...

Production of a collimated beam

To produce a collimated beam of light for illuminating displays, there is provided a highly reflective diffusely illuminated cavity source 11 having apertures or holes 12 in one wall . Each aperture 12 has a finite depth and angled sides tapering outwardly. The apertures allow light to pass directly through over a limited range of angles but light which enters the apertures at larger angles is reflected off the walls of the apertures. Any radiation not entering an aperture is reflected back into the cavity and then reflected by another wall of the cavity and thus has a finite probability of entering one of the apertures. In this way the a high proportion of the light coming into the cavity will exit the cavity in a preferred direction. The collimation can be improved by placing a lens or diffractive hologram placed after the tapered apertures.

Radiotherapeutic apparatus

Far field imaging

Distant radiation sources are imaged using a collimator having a multiplicity of portions, the transmissivities of the portions to radiation reaching the collimator from a given source being different from portion-to-portion for a given orientation of the collimator; these transmissivities are varied over time, and radiation passing through each portion is detected for successive values of its transmissivity.

RADIOGRAPHIC INSTALLATION WITH TELEVISION MONITOR

X-ray device

A flourescent x-ray device for irradiating x-rays to a sample so that flourescent x-rays emitted from the sample can be detected is described. A stationary fixed collecting plate is used instead of the movable reflecting plate employed in the prior art. The reflecting plate possesses the characteristics of being transmissive to x-rays and being reflective to visible light so that an image of the sample can be viewed by an observer and the sample can be irradiated with x-rays passing through the plate. The invention permits a remarkable decrease in manufacturing cost. Moreover, the device can be operated in a stable condition with high accuracy for a long time.

Improvements in x-ray apparatus

... 608,282. Rontgen-ray apparatus. PHILIPS LAMPS, Ltd. Feb. 28, 1946, No. 6245. Convention date, June 19, 1941. [Class 98 (i)] An X-ray tube having a diaphragm tube attached to the outside of its sheath to rock about an axis at right angles to that of the tube, has a slide shifting axially of the tube inside its housing, the diaphragm tube being pivotally connected to the slide and subjected to a translational movement during the shifting of the slide and to a rocking movement governed by a coupling between the housing of the tube so that the axis of the diaphragm tube is always directed to the focal spot. The tube itself may move up and down and be rotated about its axis. As shown, the earthed anode is a copper disc 4, Fig. 1, mounted at the end of a metal discharge tube 5 and has a focal spot 7 on a tungsten target 6. The tube 5 is surrounded by a sheath 9 having a lead coating 10, with an intermediate space 8 for the flow of a coolant. A member 12 slides over the sheath 9 and within a fixed ...

Image guided radiation therapy apparatus

Systems and methods for improving penetration of radiographic scanners

Systems and methods are used to increase the penetration and reduce the exclusion zone of radiographic systems. An X-ray detection method irradiates an object with X-ray fanlets including vertically moving fan beams, each fanlet having an angular range smaller than the angular coverage of the object. The fanlets are produced by modulating an X-ray beam, synchronizing the X-ray beam and the fanlets, detecting the fanlets irradiating the object, collecting image slices from the detector array corresponding to a complete scan cycle of the fanlets, and processing the image slices collected for combining into a composite image.

Improvements in or relating to rotary "grate" screens for x-ray photography

... 231,336. Siemens & Halske Akt.-Ges., Janus, F., Eichler, F., and Bohm, H. April 26, 1924. R÷ntgen-ray and like apparatus.-A rotatable grate screen for shutting out secondary rays in X-ray photography is constituted by strips of material impermeable to X-rays and strips of material permeable to them, alternately arranged to form a flat disc. The screen disc 1 which as shown in Fig. 1 is supported at the circumference on three rollers 2 and is rotated by means of a cord 4 and crank 6 is built up of sectors 7 each comprising a large number of alternately arranged strips of e.g. lead-foil and celluloid, either glued or cemented together or secured to a bedplate of a material permeable to X-rays and provided at its edge with a groove for the driving cord. The strips may be so arranged that the central strip of each sector is exactly radial or the strips may form chords or be parallel to an edge of the sector. They may be arranged at right angles to the plane of the disc or in planes passing ...

Improvements in x-ray screens for taking skiagrams

... 226,834. Mannl, R. Dec. 24, 1923, [Convention date]. R÷ntgen-ray apparatus. - A screen for intercepting secondary radiations, of the kind comprising a set of plates impervious to R÷ntgen-rays, is of a form such as would be produced by cutting out a non-central portion from a wheel having as spokes radial plates. The wheel may be supposed to be cut from that portion of a series of planes radiating from a common axis 5-6 which is included in a cylinder described round that axis. The wheel may be either at right-angles to the axis 5-6, as at A, or oblique to it, as at B. The screen is formed by cutting from such a wheel a non-central portion C or D. In use, the screen is interposed between the body t'o be examined and the floureseent screen or photographic plate in such a position that the axis 5-6 passes through the ray-source. The Specification as open to inspection under Sect. 91 (3) (a) also states that the plates may be parallel to one another, and may be carried, as by inclined hinges ...

APPARATUS FOR DEFINING A BEAM OF IONIZING RADIATION

X-ray apparatus for tomosynthesis

Apparatus for examining objects includes a group of X-ray sources, which are activated group-wise by a generator. A group of sub-images are separately projected onto a photographic film. During a subsequent step, the film is re-imaged with the aid of an optical lens matrix the lenses in the matrix are arranged in a manner similar to the X-ray sources.

RADIOGRAPHIC INSTALLATION WITH TELEVISION MONITOR

Multi-view collimator

A nonfocusing collimator provides two separate views of a portion of a body, such as an organ, simultaneously by employing a first and second plurality of parallel channels. The collimator may comprise a plurality of sections, each producing a first and second view, and being capable of producing a plurality of composite views.

NEUTRON IRRADIATION THERAPY MACHINE

TESTING SET FOR EXAMINING THES SUBJECT OF MEANS OF RADIOACTIVE RADIATION OR ROENTGENSTRAHLEN

PRODUCTION OF RADIOGRAPHS WITH A REDUCED PORTION OF STRAY RADIATION

ABBILDUNGSSYSTEM

DEVICE TO THE SCREEN OF X-RAY AND X-RAY UNIT WITH THIS

IRRADIATION DEVICE AND GUNSIGHT

OPTICAL X-RAY PLANT

DEVICE FOR ADJUSTING THE ANTI-STREWING LATTICE TO THE FOCAL LENGTH OF A RADIOLOGICAL MECHANISM

LATTICE FOR SELECTIVE ABSORPTION OF ELECTROMAGNETIC RADIATION AND MANUFACTURING PROCESS FOR IT

MECHANISM FUR THE RADIATION PROTECTION WHEN RONTGENAUFNAHMEN THE HUFTBEREICHES OF SAUGLINGEN AND INFANTS

ROENTGENKLEINWINKELKAMERA

DELIMITATION MECHANISM FOR ELECTROMAGNETIC RADIATION, IN PARTICULAR IN A ANALYZER

VERFAHREN ZUR RONTGENDIFFRAKTIONSTOPOGRAPHIERUNG VON EINKRISTALLEN UND EINRICHTUNG ZUR DURCHFUHRUNG DESSELBEN

Turning screen for the screen of the picture-masking secondary jets with radiographs.

INSTRUMENTS FOR THE CONDITIONING OF ROENTGENODER NEUTRON BEAMS.

SPECTROMETER FOR X-RAY

MECHANISM FUR THE RADIATION PROTECTION WHEN RONTGENAUFNAHMEN THE HUFTBEREICHES OF SAUGLINGEN AND INFANTS

PROCEDURE AND DEVICE FOR THE SIMPLIFIED ADJUSTMENT IN X-RAY PICTURE GIVING

SCATTERED RAY RASTER AS WELL AS PROCEDURE AND DEVICE FOR ITS PRODUCTION

RONTGEN MORE STREUSTRAHLENRASTER

ROENTGEN RASTER ARRANGEMENT

GRID FOR THE ABSORPTION OF X-RAYS

Systems and methods of three-dimensional printing of collimators using additive approaches

A method of manufacturing a collimator (134) on a three-dimensional printer (510) includes obtaining design specifications (536) for the collimator, the design specifications including a channel perimeter pattern and an overall collimator thickness, determining a first quantity of deposit layer permutation types based on the channel perimeter pattern, determining a respective second quantity of permutation layer elements (310, 320, 330) for each respective one of the deposit layer permutations, generating respective sets of sequences for each respective one of the deposit layer permutations, the number of sets equal to the respective second quantity for the corresponding deposit layer permutations, assembling the respective sets of sequences into a three-dimensional print file (538), providing the three-dimensional file to the three-dimensional printer, and manufacturing the collimator by depositing additive layers of material based on contents of the three-dimensional file. A system for ...

APPARATUS FOR DETECTING, LOCALIZING, AND IMAGING OF RADIATION IN BIOLOGICAL SYSTEMS

Improved x-ray optics, especially for phase contrast imaging

DENSIFIED PARTICULATE/BINDER COMPOSITES

Radiotherapy apparatus and collimator set therefor

PRECISELY FOCUSED COLLIMATOR AND METHOD FOR MANUFACTURING PRECISELY FOCUSED COLLIMATOR

TUBE FOR IRRADIATION EQUIPMENT

APERTURE SYSTEM FOR RADIATION SOURCES SITUATED IN PARALLEL PLANES

A MICRO BEAM COLLIMATOR FOR HIGH RESOLUTION XRD INVESTIGATIONS WITH CONVENTIONAL DIFFRACTOMETERS

A micro collimator for compressing X-ray beams for use in a X-ray diffractometer is described, wherein said collimator has a channel means for providing a channel guiding said X-ray beams, said channel having a channel entrance portion and a channel exit portion. The object of the invention is to provide a micro beam collimator capable of being used in a conventional X-ray diffractometer with the Bragg-Brentano geometry, so as to enable the characterisation of very small sample regions without need of very large radiation sources (synchrotron). For solving this technical problem it is proposed to form the channel means by two opposite, polished, oblong plate means made of or coated with a material selected from the group consisting of the heavyweight metals and materials having total reflection properties comparable to those of the heavyweight metals.

APPARATUS FOR SCANNING AN OBJECT BY MEANS OF RADIOACTIVE OR X-RAY RADIATION

APPARATUS AND METHOD FOR FACILITATING ALIGNMENT OF A COLLIMATOR

Method and apparatus for alignment of a collimator in a scintillation camera system. First coarse alignment apparatus includes an alignment plunger coordinated with a first mating member. A recess coordinated with a second mating member is positioned and configured to loosely receive the alignment plunger for coarse alignment. Coarse alignment of the first apparatus establishes a vertical axis for horizontal angular rotation about which angular displacement of the members effects coarse alignment with second, coarse alignment apparatus spaced from the first apparatus. The plunger assemblies are preferably spring loaded so that an audible click is generated when the plunger impacts the bottom of the recess to indicate coarse alignment. The coarse alignment apparatus guides the two members into fine alignment whereupon tight fitting fine alignment apparatus coordinated with the two members is mated ...

COMPACT X-RAY COLLIMATOR

An X-ray collimator comprising an X-ray shielded enclosure having aligned entrance and exit apertures for permitting passage of an X-ray beam, the exit aperture having a generally rectangular configuration defined by edges of two orthogonally disposed pairs of opposing rotatable exit shutter elements. Each of the exit shutter elements has a generally semi-cylindrical configuration and is concentrically disposed about a respective axis of rotation. Each pair of semi-cylindrical exit shutter elements is mounted for opposing rotatable movement within the other pair of semi-cylindrical exit shutter elements. The entrance aperture of the housing may be defined by two orthogonally disposed pairs of opposing shutter plates, one pair thereof being directly linked to an associated pair of semi-cylindrical exit shutter elements for corresponding movement therewith.

IRRADIATION APPARATUS USING RADIOACTIVE SOURCES

IRRADIATION APPARATUS USING RADIOACTIVE SOURCES An irradiation apparatus for obtaining an irradiation beam having, precise and easily adjustable dimensions, This apparatus comprises more particularly a secondary collimation device having an axis YY, removably fixed to the mobile arm of the irradiation apparatus and comprising a conical pot, two pairs of frames which support collimating plates and are movable about shafts fixed to said conical pot, each of said frames being connected to said conical pot by means of a compass system formed from legs hinged together about shafts. With said frames are associated mobile antipenumbra plates whose position is checked by means of a feeler system.

COLLIMATOR TRANS-AXIAL TOMOGRAPHIC SCINTILLATION CAMERA

A collimator is provided for a scintillation camera system in which a detector precesses in an orbit about a patient. The collimator is designed to have high resolution and lower sensitivity with respect to radiation traveling in paths laying wholly within planes perpendicular to the cranial-caudal axis of the patient. The collimator has high sensitivity and lower resolution to r?ion traveling in other planes. Variances in resol?? and sensitivity are achieved by altering the length, spacing or thickness of the septa of the collimator.

ROTATING X-RAY MASK WITH SECTOR SLITS

DENSIFIED PARTICULATE/BINDER COMPOSITES

A system and method (Fig.1(a)-(f) to produce high density precision composite devices. A system and method to consolidate a high density composite within details of a mold (110). One method includes creating a densified composite within a mold (110). Another method includes densifying a pre-mixed composite within a mold (110). A very high density precision molded composite is formed.

RADIOGRAPHY

Method for Producing a Grating and Phase Contrast X-Ray System

A method is described for producing a grating, in particular an absorption grating, having a grating constant of less than 100 μm, by using a solution of superparamagnetic colloidal nanocrystal clusters (CNCs), a solvent liquid and a photocurable resin, with the following steps:—alignment of the CNCs in the solution by an external magnetic field,—exposure of the solution, so that the resin is cured and grating structures of an intended grating constant are formed, and—removal of the magnetic field.

Interwoven multi-aperture collimator for 3-dimensional radiation imaging applications

An interwoven multi-aperture collimator for three-dimension radiation imaging applications is disclosed. The collimator comprises a collimator body including a plurality of apertures disposed in a two-dimensional grid. The collimator body is configured to absorb and collimate radiation beams emitted from a radiation source within a field of view of said collimator. The collimator body has a surface plane disposed closest to the radiation source. The two-dimensional grid is selectively divided into at least a first and a second group of apertures, respectively defining at least a first view and a second view of an object to be imaged. The first group of apertures is formed by interleaving or alternating rows of the grid, and the second group of apertures is formed by the rows of apertures adjacent to the rows of the first group. Each aperture in the first group is arranged in a first orientation angle with respect to the surface plane of said collimator body, and each aperture in the second group is arranged in a second orientation angle with respect to the surface plane of said collimator body such that the apertures of the first group are interwoven with the apertures of the second group.

X-ray computed tomography apparatus, radiation detector, and method of manufacturing radiation detector

An X-ray CT apparatus according to an embodiment includes an X-ray detector and a collimator unit. The X-ray detector detects X-rays that have passed through a subject. The collimator unit eliminates scattered radiation from X-rays that are incident on the X-ray detector. The collimator unit includes a plurality of collimator modules, a supporter, and a fixing unit. The plurality of collimator modules each includes a plurality of first collimator plates arranged in a grid along a channel direction and a slice direction that are orthogonal to each other. The supporter supports the collimator modules such that the collimator modules are aligned in a plurality of straight lines along the channel direction and in a plurality of straight lines along the slice direction. The fixing unit is provided to the supporter and fixes positions of the collimator modules in the channel direction and the slice direction.

Collimators and methods for manufacturing collimators for nuclear medicine imaging systems

Collimators and methods for manufacturing collimators for nuclear medicine (NM) imaging systems are provided. One method includes forming a plurality of collimator segments from powdered tungsten, wherein the plurality of collimator segments have opposing faces with edges therebetween. The method also includes sintering the powdered tungsten segments and joining the plurality of sintered powdered tungsten segments at least at one or more of the edges to form the collimator for the NM imaging system.

Method for placing a/d converter, front-lit detector and ct apparatus

A front-lit detector includes a collimator, an X-ray to visible light converter configured to convert X-rays to visible light after the X-rays pass through the collimator to irradiate the X-ray to visible light converter, a visible light to analog signal converter configured to cover the visible light into analog signals, a substrate on which the visible light to analog signal converter is placed, and an A/D converter configured to convert the analog signals into digital signals.

Body section radiographic apparatus, and a noise removing method for the body section radiographic apparatus

A body section radiographic apparatus for serially acquiring a series of fluoroscopic images while synchronously moving a radiation source and a radiation detecting device, and obtaining a sectional image of a subject from the series of fluoroscopic images. The apparatus includes, besides the radiation source which emits a beam of radiation and the radiation detecting device which is opposed to the radiation source and has a plurality of radiation detecting elements, a synchronous moving device for moving the radiation source and the radiation detecting device synchronously with each other, and a radiation grid disposed to cover a radiation detecting plane of the radiation detecting device for removing scattered radiation. The fluoroscopic images are serially acquired while moving the radiation grid relative to the radiation detecting device to change positions where radiation transmission unevenness of the radiation grid is projected on the radiation detecting device.

Radiographic apparatus and radiographic system

A radiographic apparatus for obtaining a radiological phase contrast image, the radiographic apparatus includes: a radiation source, a first grating, a second grating, a scanning unit, and a radiological image detector. The radiation source includes a radiation tube, a driving power supply unit, and a radiation source control unit. The radiation irradiated from the radiation tube is controlled so that a remaining output after the feeding of the power to the radiation tube by the driving power supply unit is stopped becomes substantially zero, and the scanning unit performs a relative displacement operation after the radiation irradiated to the first grating is effectively cut off by the radiation source control unit.

Image processing apparatus, x-ray ct apparatus and image processing method

An image processing apparatus has a map data generating unit, a correction processing unit and a display processing unit. The map data generating unit generates 3D map data including voxel values based on blood signal values of a myocardium area of a heart included in volume data of the heart. The correction processing unit corrects a plurality of voxel values on each a plurality of straight lines radially extending from an interior side of the heart so as to be equivalent to a voxel value at an inner wall side of the myocardium area on each of the straight lines to generate 3D corrected map data on the basis of the 3D map data. The display processing unit generates image data on the basis of the 3D corrected map data to display on a display device.

Neutral Particle Microscope

The invention includes a source stream of neutral particles (neutral atoms and neutral molecules, but not neutrons) in free molecular flow, a beam forming element disposed within the source stream having at least one small aperture located proximal to the sample allowing part of the source stream to pass through the aperture as a beam of neutral particles directed at the sample for revealing the sample, a control positioner for scanning the beam of neutral particles over or through portions of said sample surface, optionally one or more detector nozzles having an inlet positioned to collect neutral particles proceeding from or through the sample surface in free molecular flow, at least one detector, the detector arranged to sense neutral particles proceeding from the sample, and a processor connected to the detector and control positioner for generating an image of said sample.

OPTICAL DEVICE FOR ANALYZING A SPECIMEN BY THE SCATTERING OF AN X-RAY BEAM AND ASSOCIATED COLLIMATION DEVICE AND COLLIMATOR

A collimation device for an X-ray beam, an optical device for analyzing a specimen by the scattering of an X-ray beam, and a collimator for an X-ray beam. The collimation device includes an enclosure configured to be under a vacuum or a controlled atmosphere, the enclosure including an inlet and an outlet for the X-ray beam and at least one plate made of a material having a diffracting periodic structure, the plate including two main faces and at least one flared aperture between the faces. 123-. (canceled)24. A collimation device for an X-ray beam , comprising:an enclosure configured to be placed under vacuum or controlled atmosphere, the enclosure comprising an entrance and an exit for the X-ray beam, and at least one first plate made of a material with a diffracting periodic structure,the first plate comprising first and second principal faces and at least one first aperture broadening out between the first and second principal faces.25. The device as claimed in claim 24 , in which the first principal face of the at least one first plate is an upstream face claim 24 , with reference to a direction of propagation of the X-ray beam claim 24 , and the second principal face is a downstream face claim 24 , the first aperture widens out from the upstream face to the downstream face of the first plate.26. The device as claimed in claim 24 , in which the at least one first plate made of material with a diffracting periodic structure is arranged at a level of the exit of the enclosure.27. The device as claimed in claim 26 , further comprising claim 26 , at a level of the entrance of the enclosure claim 26 , at least one second plate made of a material with a diffracting periodic structure claim 26 , the second plate comprising third and fourth principal faces and at least one second aperture broadening out between the third and fourth faces.28. The device as claimed in claim 27 , in which the third principal face of the at least one second plate is an upstream face claim ...

Multi-Linear X-Ray Scanning Systems and Methods for X-Ray Scanning

An x-ray scanner includes an x-ray source producing a fan of x-rays, an x-ray detector array, a collimator disposed between the source and the array, fixed to the source, and defining a slit collimating the fan of x-rays into a linear x-ray beam. The array is spaced from the source such that a linear extent of the linear x-ray beam is no greater than a detector dimension of the array. An x-ray processing unit processes detection of the linear x-ray beam by the array. A processor-controlled motor moves the x-ray source about a source movement axis to pan the linear x-ray beam and create an x-ray emission cone and moves the array correspondingly with the source. The x-ray processing unit form an x-ray scanned image of an object disposed between the collimator and the array within the x-ray emission cone when the linear x-ray beam is panned across the object.

Contour Collimator Having a Liquid Impermeable to X-Rays

A contour collimator and a method for setting a contour of a radiation path of an x-ray are provided. A liquid impermeable to the x-ray forms the contour. 1. A contour collimator for setting a contour of a radiation path of x-rays , the contour collimator forming an aperture and comprising:a liquid impermeable to x-rays, wherein the contour is formable by rotation of the liquid.2. The contour collimator as claimed in claim 1 , wherein the liquid is arranged so as to be rotatable at right angles to the radiation path.3. The contour collimator as claimed in claim 1 , further comprising leaves arranged radially about an axis of rotation parallel to the radiation path.4. The contour collimator as claimed in claim 3 , wherein first ends of the leaves point in a direction of the axis of rotation claim 3 , andwherein tapered chambers are formed between the leaves that are at least partially filled with the liquid.5. The contour collimator as claimed in claim 4 , further comprising pump units that exert pump forces onto the liquid in a direction of a centripetal force acting on the liquid claim 4 , wherein the contour is formable.6. The contour collimator as claimed in claim 5 , wherein each of the pump units is operable to supply one of the tapered chambers.7. The contour collimator as claimed in claim 1 , wherein the liquid includes an euctectic alloy that contains gallium claim 1 , indium and tin.8. The contour collimator as claimed in claim 2 , further comprising leaves arranged radially about an axis of rotation parallel to the radiation path.9. The contour collimator as claimed in claim 1 , further comprising pump units that exert pump forces onto the liquid in a direction of a centripetal force acting on the liquid claim 1 ,wherein the contour is formable.10. The contour collimator as claimed in claim 2 , further comprising pump units that exert pump forces onto the liquid in a direction of a centripetal force acting on the liquid claim 2 ,wherein the contour is ...

RADIATION TOMOGRAPHY SYSTEM, RADIATION DETECTING DEVICE, AND SPATIAL RESOLUTION CHANGING METHOD FOR RADIATION TOMOGRAPHY

A radiation tomography system is provided. The radiation tomography system includes a radiation source configured to rotate around a subject and apply radiation to the subject, a plurality of radiation detecting elements disposed opposite the radiation source, a plurality of collimator plates partitioning the radiation detecting elements in a channel direction, the collimator plates erected such that plate surfaces of each of the plurality of collimator plates extend along a direction of radiation from the radiation source, and an aperture-width changing unit configured to change a width of each aperture formed by the plurality of collimator plates by moving a plurality of radiation absorbing members along respective end sides of the collimator plates close to the radiation source, the plurality of radiation absorbing members moveable between a first position at which the end sides are covered and a second position at which the end sides are exposed. 1. A radiation tomography system , comprising:a radiation source configured to rotate around a subject to be imaged and apply radiation to the subject;a plurality of radiation detecting elements disposed opposite the radiation source;a plurality of collimator plates partitioning the plurality of radiation detecting elements in a channel direction of the radiation detecting elements, the plurality of collimator plates erected such that plate surfaces of each of the plurality of collimator plates extend along a direction of radiation from the radiation source; andan aperture-width changing unit configured to change a width of each aperture formed by the plurality of collimator plates by moving a plurality of radiation absorbing members along respective end sides of the collimator plates close to the radiation source, the plurality of radiation absorbing members moveable between a first position at which the end sides are covered and a second position at which the end sides are exposed.2. A radiation tomography system ...

COLLIMATOR AND CT EQUIPMENT COMPRISING THE SAME

An X-ray collimator has a collimation plate, and a shielding box made of a tungsten plastic composite, the shielding box having an opening on the top and the bottom thereof respectively, and a support part for supporting the shielding box. The collimation plate is disposed on the shielding box or the support part. Compared to the use of the shielding box alone, the collimator reduces the volume of the collimator without reducing its shielding performance. 1. A collimator comprising:a collimation plate;a shielding box made of a tungsten plastic composite, the shielding box having an opening on each of a top and a bottom thereof;a support part that supports said shielding box; andsaid collimation plate being disposed on said shielding box or said support part.2. The collimator according to claim 1 , wherein said shielding box comprises a cover plate and a box body; said cover plate having an opening and said box body having an opening at the bottom.3. The collimator according to claim 1 , wherein thickness of said shielding box is 1.5-4.0 mm./4. The collimator according to claim 1 , wherein a thickness of said shielding box is uniform; or the bottom of the box body of said shielding box is thickest and the cover plate is thinnest.5. The collimator according to claim 1 , wherein a density of said tungsten plastic composite is 9-11 g/cm claim 1 , or a tungsten content in the tungsten plastic composite is 94-96 wt %.6. The collimator according to claim 1 , wherein said tungsten plastic composite is made by the injection molding of tungsten and polycaprolactam.7. The collimator according to claim 1 , wherein said support part comprises a bottom plate a cover plate claim 1 , a side plate and a U-shaped plate; said bottom plate and said cover plate each have an opening.8. The collimator according to claim 1 , wherein said support part is a combination of a sheet metal part and an aluminum alloy machined part.9. The collimator according to claim 1 , further comprising a ...

METHOD AND SYSTEM FOR TREATING MOVING TARGET

A method and system for providing intensity modulated radiation therapy to a moving target is disclosed. According to a preferred embodiment of the invention, a treatment plan for providing radiotherapy using a multi-leaf collimator (“MLC”) comprises a plurality of sub-plans, each of which is optimized for a different phase of target movement. Movements of the treatment target are tracked in real time, and the choice of which sub-plan to implement is made in real time based on the tracked position of the target. Each of the sub-plans is preferably formulated to minimize interplay effects between target movements and MLC leaf movements, consistent with other planning goals. In addition, the sub-plans preferably include a predicted region corresponding to the next anticipated position of the target, in order to facilitate the transition to the next position. 1. (canceled)2. A method of using a radiation therapy system to perform intensity modulated radiation therapy on a selected target volume within a patient , wherein the target volume undergoes generally predictable movements , the method comprising: a plurality of inputs comprising target volume movement data and anticipated target volume movement data, and', 'one or more constraints comprising movement limitations of a multileaf collimator of the radiation therapy system, the treatment plan optimized to minimize interplay of the plurality of inputs and constraints;, 'delivering radiation in accordance with a treatment plan developed for the patient, wherein the treatment plan is developed usingdetermining a target volume position and tracking target volume movement; andmoving leaves of the multileaf collimator to adjust for target volume movement according to the treatment plan.3. The method of claim 2 , wherein the treatment plan minimizes interplay between multileaf collimator movements and the target volume movement by accounting for the movement limitations of the multileaf collimator.4. The method of claim 2 ...

LOW DOSE-RATE RADIATION FOR MEDICAL AND VETERINARY THERAPIES WITH THREE DIMENSIONALLY SHAPED PROFILES

Various embodiments relate to a method of performing microbeam radiation therapy (microbeam radiosurgery) for a subject, including: producing a high-energy radiation beam; shaping, attenuating, strengthening, hardening and/or otherwise appropriately modifying the high-energy radiation beam using a low-Z, high-Z, or variable-Z filter; passing the beam before or after it has been so modified through a collimator to produce high-dose regions alternating with low-dose regions; and irradiating the subject with the collimated beam so modified. 1. A method of performing microbeam radiation therapy for a subject , comprising:producing a high-energy radiation fan beam, wherein the width of the fan beam in a first direction is greater than the width of the fan beam in a second direction; andshaping the fan beam;producing a relative movement between the subject and the fan beam to irradiate the subject through a collimator to produce high-dose regions alternating with low-dose regions.2. The method of claim 1 , wherein shaping the fan beam includes adjusting the width of the fan beam in the first direction while producing a relative movement between the subject and the fan beam in the second direction.3. The method of claim 2 , wherein the width of the fan beam is adjusted to correspond to a desired treatment region in the subject.4. The method of claim 2 , wherein adjusting the width of the fan beam in the first direction includes adjusting the position of a set of adjustable jaws configured to block a portion of the high-energy radiation beam.5. The method of claim 2 , wherein adjusting the width of the fan beam in the first direction includes placing a filter in the path of the fan beam.6. The method of claim 1 , wherein shaping the fan beam includes adjusting the intensity profile of the fan beam.7. The method of claim 6 , wherein a filter is used to adjust the intensity profile of the fan beam.8. The method of claim 6 , wherein the collimator includes a filter that is ...

Method for manufacturing collimator, collimator and x-ray ct apparatus

According to one embodiment, a method is disclosed for manufacturing a collimator. The method can include forming a first plate-like part having a plurality of first slits. The method can include forming a second plate-like part having a plurality of second slits. The method can include causing the first slits and the second slits to face each other and assembling a plurality of the first plate-like parts and a plurality of the second plate-like parts so as to intersect each other. Portions of the second plate-like parts where the second slits are not provided are held on an opening side of the first slits. The second plate-like parts are inclined so as to follow an inclination of the first slits. The inclined second plate-like parts are moved toward a bottom of the first slits.

Collimator for x-ray, gamma, or particle radiation

A collimator for x-ray, gamma, or particle radiation has a plurality of collimator elements made of a tungsten-containing material to reduce scattered radiation. At least one collimator element consists of a tungsten alloy having a tungsten content of 72 to 98 wt.-%, which contains 1 to 14 wt.-% of at least one metal of the group Mo, Ta, Nb and 1 to 14 wt.-% of at least one metal of the group Fe, Ni, Co, Cu. The collimator also has very homogeneous absorption behavior at very thin wall thicknesses of the collimator elements.

X-RAY DETECTION APPARATUS

The X-ray detection apparatus is equipped with an X-ray irradiation unit, an X-ray detector, and a movable collimator having a plurality of apertures. The collimator is provided with a window unit through which light passes, and the apertures and the window unit are aligned in one direction. The collimator moves in the direction so as to change the diameter of an aperture for narrowing X-rays from the X-ray irradiation unit to be used for irradiation of a sample and move to a position to allow an imaging unit to photograph a sample through the window unit. It becomes possible to photograph a sample even in a state where the X-ray irradiation unit, the X-ray detector and the collimator are positioned proximally to each other. 1. An X-ray detection apparatus comprising:an X-ray irradiation unit;a sample support unit configured to support a sample to be irradiated with X-rays from the X-ray irradiation unit;an X-ray detector configured to detect X-rays generated from the sample;an imaging unit configured to obtain an optical image of the sample supported by the sample support unit; anda collimator which includes a plurality of apertures having different sizes and a window unit that light used for obtaining an optical image of the sample can pass through,wherein the collimator moves to change an aperture that X-rays pass through and moves to shift the window unit to a position that allows the imaging unit to obtain an optical image of the sample through the window unit.2. The X-ray detection apparatus according to claim 1 ,wherein the apertures and the window unit of the collimator are aligned in one direction, andthe collimator can move in said direction.3. The X-ray detection apparatus according to claim 2 , further comprising:a shaft parallel to the one direction; anda linear drive motor, which has a drive shaft parallel to said shaft, configured to drive the drive shaft linearly in a longitudinal direction,wherein the shaft is connected with the drive shaft, andthe ...

X-RAY DETECTION APPARATUS

The X-ray detection apparatus is equipped with an X-ray irradiation unit, an X-ray detector, a movable collimator and a shield for blocking X-rays. The shield blocks X-rays, which are to enter the X-ray detector directly from the X-ray irradiation unit. The shield also blocks fluorescent X-rays and scattered X-rays generated by irradiation of the collimator with X-rays. In such a manner, it is possible to prevent X-rays other than fluorescent X-rays from the sample S from being detected by the X-ray detector. The shield is joined with the collimator, so that the collimator and the shield move as a unit. It is possible to locate the shield even in a downsized X-ray detection apparatus. 1. An X-ray detection apparatus comprising:a sample support unit;an X-ray irradiation unit, which is located with an exit of X-rays faced to a predetermined part of the sample support unit, configured to irradiate a sample supported by the sample support unit with X-rays;an X-ray detector, which is located with an entrance of X-rays faced to the predetermined part of the sample support unit, configured to detect X-rays generated from the sample;a collimator configured to narrow X-rays to be used for irradiation of the sample by the X-ray irradiation unit; anda shield configured to block X-rays passing through a path linking the exit with the entrance and X-rays passing through a path linking an arbitrary part of the collimator with the entrance.2. The X-ray detection apparatus according to claim 1 ,wherein the shield includes:a first shielding member configured to block X-rays passing through a path linking the exit with the entrance; anda second shielding member configured to block X-rays passing through a path linking the first shielding member and the collimator with the entrance.3. The X-ray detection apparatus according to claim 1 ,wherein the collimator has a plate-like shape, andthe shield is projected from both faces of the collimator.4. The X-ray detection apparatus according ...

Three-dimensional focused anti-scatter grid and method for manufacturing thereof

A device for, and method of manufacture of, a focused anti-scatter grid for improving the image contrast of x-ray images produced in medical, veterinary or industrial applications. The grid comprising a series of modular units so juxtaposed with each other as to form a series of focused channels for the passage of the focused imaging x-rays. The modules comprise a series of focusing ribbons of a heavy metal or a series of mating solid arcuate forms, formed of a polymer and having on at least one side surface a layer of heavy metal.

RADIATION CONTROL AND MINIMIZATION SYSTEM AND METHOD USING COLLIMATION/FILTERING

A radiation control system and method are provided in which radiation delivered to a patient and/or the operator of the equipment is minimized. The radiation control system may be used in a large variety of applications including applications in which radiation source is used to inspect an object, such as, for example, medical imaging, diagnosis and therapy, in manufacturing operation using radiation, in airports scanning systems, in different security setups, and in nuclear reactors automation and process control. The radiation control system and method may also be used with 3D imaging. 1. A radiation device , comprising:a radiation source that generates a radiation beam that is directable towards a subject;a radiation controller connected to the radiation source, the radiation controller having a fixation zone module that determines a fixation zone of an operator of the radiation source and the radiation controller generates a collimator control signal based in part on the determined fixation zone of the operator; anda collimator, connected to the radiation controller, that based on the collimator control signal, continually filters the radiation that is outside of a region of interest to reduce a radiation dose from the radiation source for radiation that is outside of the region of interest.2. A radiation device , comprising:a radiation source that generates a radiation beam that is directable towards a subject;a radiation controller connected to the radiation source, the radiation controller that generates a collimator control signal; anda collimator, connected to the radiation controller, that based on the collimator control signal, continually filters the radiation that is outside of a region of interest to reduce a radiation dose from the radiation source for radiation that is outside of the region of interest.3. The device of claim 2 , wherein the radiation source has an movable anode that is mechanically moved to move the radiation beam.4. The device of ...

Grated collimation system for computed tomography

A collimator for a computed tomography imaging device can include first and second leaves positioned on opposing sides of a primary radiation delivery window. The first and second leaves can include first and second gratings having a plurality of attenuating members with a plurality of secondary radiation delivery windows extending between adjacent attenuating members.

RADIATION DETECTION DEVICE AND RADIATION TOMOGRAPHIC APPARATUS, AND METHOD FOR ASSEMBLING RADIATION DETECTION DEVICE

A radiation detection device is provided. The radiation detection device includes a pair of rails spaced in a slice direction and extending parallel to a channel direction, and a plurality of collimator modules arranged along the channel direction on a radiation exit side of the pair of rails, wherein at least one of the pair of rails extending along the channel direction includes a plate member with a plurality of notches formed along the radiation exit side, and wherein the collimator modules each include a first pin protruding on a radiation incidence side and attached to the pair of rails with the first pin fitted in one of the notches of the plate member. 1. A radiation detection device comprising:a pair of rails spaced in a slice direction and extending parallel to a channel direction; anda plurality of collimator modules arranged along the channel direction on a radiation exit side of the pair of rails, wherein at least one of the pair of rails extending along the channel direction comprises a plate member with a plurality of notches formed along the radiation exit side, and wherein the collimator modules each comprise a first pin protruding on a radiation incidence side and attached to the pair of rails with the first pin fitted in one of the notches of the plate member.2. The radiation detection device according to claim 1 , wherein each of the pair of rails comprise the plate member claim 1 , and wherein the collimator modules each comprise the first pins at both ends in the slice direction.3. The radiation detection device according to claim 1 , wherein the notches are formed at each of a plurality of reference positions for arrangement of the collimator modules.4. The radiation detection device according to claim 1 , wherein at least one of the pair of rails comprises the plate member and a flat surface formed at a reference position for the collimator modules in the slice direction claim 1 , and wherein a lateral side of the first pin abuts on the flat ...

Variable Angle Collimator

A system for producing a controllable beam of radiation is controllable electronically, and includes no parts that must move relative to one another while in operation to form the beam. The direction and cross-section of the beam may be controlled electronically by controlling an electron beam. Various embodiments provide an X-ray collimator that allows forming a scanning X-ray beam of desired size and flux independently of the aperture material thickness without requiring movement of the aperture or physical components that create the aperture. Some embodiments provide an X-ray collimator that allows forming a scanning X-ray beam of desired size and flux independently of the beam angle. 1. A system for producing a steerable beam of radiation , comprising:a radiation source configured to produce radiation at an angle, relative to a collimator, wherein the angle is electronically controllable; anda collimator comprising material opaque to the radiation produced by the radiation source, the collimator comprising an aperture configured to receive radiation from the radiation source at a plurality of incident angles, and configured to pass a portion of the radiation through the collimator at each of the plurality of incident angles, so as to form a collimated beam of radiation having a beam cross-section,wherein the collimator and radiation source are configured to remain stationary with respect to one another when producing a steerable beam of radiation.2. The system of wherein the radiation source comprises an electron source and an anode claim 1 , the electrode source configured to illuminate the anode with a steerable beam of electrons claim 1 , so as to produce a movable point source of radiation.3. The system of wherein the aperture comprises a compound aperture formed by a cooperation between a first aperture in a first collimator surface and a second aperture in a second collimator surface.4. The system of wherein the aperture is a compound aperture is further ...

RADIATION TOMOGRAPHY SYSTEM, RADIATION DETECTING DEVICE, AND SPATIAL RESOLUTION CHANGING METHOD FOR RADIATION TOMOGRAPHY

A radiation tomography system is provided. The radiation tomography system includes a radiation source configured to rotate around a subject and apply radiation to the subject, a plurality of radiation detecting elements disposed opposite the radiation source, a plurality of collimator plates partitioning the radiation detecting elements in a channel direction, the collimator plates erected such that plate surfaces of each of the plurality of collimator plates extend along a direction of radiation from the radiation source, and an aperture-width changing unit configured to change a width of each aperture formed by the plurality of collimator plates by moving a plurality of radiation absorbing members along respective end sides of the collimator plates close to the radiation source, the plurality of radiation absorbing members moveable between a first position at which the end sides are covered and a second position at which the end sides are exposed. 1. A radiation tomography system , comprising:a radiation source configured to rotate around a subject to be imaged and apply radiation to the subject;a plurality of radiation detecting elements disposed opposite the radiation source;a plurality of collimator plates partitioning the plurality of radiation detecting elements in a channel direction of the radiation detecting elements, the plurality of collimator plates erected such that plate surfaces of each of the plurality of collimator plates extend along a direction of radiation from the radiation source; andan aperture-width changing unit configured to change a width of each aperture formed by the plurality of collimator plates by moving a plurality of radiation absorbing members along respective end sides of the collimator plates close to the radiation source, the plurality of radiation absorbing members moveable between a first position at which the end sides are covered and a second position at which the end sides are exposed.2. A radiation tomography system ...

COLLIMATOR ARRANGEMENT AND METHOD

The present invention relates to a method and an X-ray apparatus comprising an X-ray source, an x-ray detector, and at least a first collimator having a first active position and a second collimator having a second active position for forming a bundle of X-ray beams, wherein both of said active positions are located in a substantially straight path between said X-ray source and said detector, but at different distances from said X-ray source. The X-ray apparatus further comprises a selector arrangement for switching one of said first or second collimators in said first or second active position, whereby when one of said first or second collimators is in an active position the other collimator is in an inactive position. 1. An X-ray apparatus comprising an X-ray source , an x-ray detector , and at least a first collimator having a first active position and a second collimator having a second active position for forming a bundle of X-ray beams , wherein both of said active positions are located in a substantially straight path between said X-ray source and said detector , but at different distances from said X-ray source , characterised in that said X-ray apparatus further comprises a selector arrangement for positioning one of said first or second collimators in said first or second active position , wherein when one of said first or second collimators is in an active position and the other collimator is in an inactive position.2. The X-ray apparatus according to claim 1 , further comprising a position sensor and a means for selecting one of said collimators claim 1 , with dependence on a value from said position sensor.3. The X-ray apparatus according to claim 1 , further comprising an x-ray blocking means for blocking a free X-ray path between said collimators claim 1 , when none of said collimators is arranged to entirely block said x-ray path.4. The X-ray apparatus according to claim 1 , further comprising an X-ray opaque material claim 1 , arranged between said ...

RADIATION IMAGING APPARATUS

A radiation imaging apparatus comprising: a radiation detector; a field modulator that modulates the radiation that reaches the detector and is defined by a transmission function; a scanner system for changing the pose of at least the field modulator; and an image reconstruction section that receives a radiation reading from the radiation detector for each of a plurality of angular orientations of the field modulator, and is configured to process the received readings to derive an image representing the amount of radiation originating from each point in an image domain, wherein the transmission function of the field modulator comprises a low transmission region that attenuates radiation incident toward the detector from angular directions defined by that low transmission region, and a high transmission region that transmits to the detector radiation that is incident toward the detector from angular directions defined by that high transmission region, wherein said regions are arranged such that: for each incident angle in the high transmission region, there is at least one incident angle in the low transmission region that is separated therefrom by less than a first angle, wherein said first angle is 10 degrees; and for each incident angle in the high transmission region, the majority of other incident angles in the high transmission region are separated therefrom by more than a second angle, wherein said second angle is 20 degrees. 1. A radiation imaging apparatus comprising:a radiation detector;a field modulator that modulates the radiation that reaches the detector and is defined by a transmission function;a scanner system for changing the pose of at least the field modulator; andan image reconstruction section that receives a radiation reading from the radiation detector for each of a plurality of angular orientations of the field modulator, and is configured to process the received readings to derive an image representing the amount of radiation originating from ...

Methods for Manufacturing Three-Dimensional Devices and Devices Created Thereby

In certain exemplary embodiments of the present invention, three-dimensional micro-mechanical devices and/or micro-structures can be made using a production casting process. As part of this process, an intermediate mold can be made from or derived from a precision stack lamination and used to fabricate the devices and/or structures. Further, the micro-devices and/or micro-structures can be fabricated on planar or nonplanar surfaces through use of a series of production casting processes and intermediate molds. The use of precision stack lamination can allow the fabrication of high aspect ratio structures. Moreover, via certain molding and/or casting materials, molds having cavities with protruding undercuts also can be fabricated. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 1. A system , comprising: a protruding undercut; and', 'a plurality of 3-dimensional micro-features; and, 'a radiation attenuating, cast, monolithic body comprising at least one surface that definesa plurality of radiation detector elements adapted to be focally aligned by openings defined by said radiation attenuating, cast, monolithic body to a radiation source located at a predetermined distance from said radiation attenuating, cast, monolithic body; said surface substantially spatially invertedly replicates a stack lamination mold surface formed by a stacked plurality of metallic foil layers comprised by a stack lamination mold;', 'said radiation attenuating, cast, monolithic body comprises particles having a size ranging from 1 to 150 microns., 'wherein2. The system of claim 1 , further comprising:said radiation source.3. The system of claim 1 , further comprising:said radiation source, wherein said ...

X-ray imaging apparatus, and method of setting imaging area of x-ray imaging apparatus

An X-ray imaging apparatus controls an imaging area using an image area setting which includes displaying, on a screen, an X-ray image with respect to an X-ray irradiation area acquired via X-ray irradiation of an X-ray irradiator, receiving a selected-area generation instruction to select a partial area of the X-ray image displayed on the screen from a user, and displaying a selected-area using a boundary line if the selected-area is designated on the screen by the user. Thereafter, the imaging area setting method includes setting the X-ray irradiation area based on the selected-area, and adjusting the X-ray irradiator so as to irradiate the X-ray irradiation area with X-rays.

RADIATION DETECTING APPARATUS AND RADIATION IMAGING APPARATUS

A radiation detecting apparatus is provided. The radiation detecting apparatus includes a pair of rails extending in a channel direction, a plurality of collimator modules provided in the pair of rails and arranged in the channel direction, each collimator module having a plurality of collimator plates arranged in the channel direction, and a plurality of detector modules provided on a radiation outgoing side of the collimator modules and arranged in the channel direction, wherein each of the collimator modules has a pair of alignment pins extending along an irradiation direction, wherein the rails include a surface of placement for each collimator module, the surface of placement formed with one of concave holes and grooves in which first ends of the alignment pins are fitted, and wherein each of the detector modules has one of concave holes and through holes in which second ends of the alignment pins are fitted. 1. A radiation detecting apparatus comprising:a pair of rails extending in a channel direction;a plurality of collimator modules provided in the pair of rails and arranged in the channel direction, each collimator module having a plurality of collimator plates arranged in the channel direction; anda plurality of detector modules provided on a radiation outgoing side of the collimator modules and arranged in the channel direction, each detector module having a plurality of detecting elements arranged in the channel direction,wherein each of the collimator modules has a pair of alignment pins extending along an irradiation direction of radiation,wherein the rails include a surface of placement for each collimator module, the surface of placement formed with one of concave holes and grooves in which first ends of the alignment pins are fitted, andwherein each of the detector modules has one of concave holes and through holes in which second ends of the alignment pins are fitted.2. The radiation detecting apparatus according to claim 1 , wherein the one of ...

X-RAY COLLIMATOR

Disclosed is a system for attenuating x-rays. The disclosed devise utilizes a copper barrier having a minimum total thickness of at least 0.12 mm. The device can be utilized as part of a collimator and/or as part of a masking wall. 1. A device for reducing x-ray radiation emitted from an x-ray source , the device comprising:a wall, the wall constructed and arranged to attenuate x-rays, the wall comprising one or more layers of copper having a minimum total thickness of 0.12 mm.2. The device of claim 1 , wherein the wall defines a tunnel claim 1 , the tunnel having a first opening on a first side constructed and arranged for attachment to the x-ray source claim 1 , the tunnel also having a second opening on a second side constructed and arranged to emit x-rays from the x-ray source claim 1 , the tunnel being continuous between the first and the second opening.3. The device of claim 1 , wherein the wall defines an opening and wherein the wall is constructed and arranged to be oriented substantially perpendicular to the direction of travel of the x-rays emitted from an x-ray source claim 1 , such that a portion of the emitted x-rays are incident to the wall and another portion pass through the opening.4. The device of claim 1 , further comprising:an x-ray generating device comprising the x-ray source, wherein the x-ray generating device is attached to the wall,5. The device of claim 1 , wherein the wall further comprises one or more layers of tin having a minimum total thickness of 0.12 mm.6. The device of claim 1 , wherein the wall further comprises a protective coating.7. The device of claim 6 , wherein the protective coating is selected from the group consisting of nickel and a plastic polymer.8. The device of claim 1 , wherein the wall further comprises one or more support layers.9. The device of claim 8 , wherein the support layers comprise a plastic polymer coated with a layer of electrolessly deposited metal.10. A collimator comprising:a wall defining a tunnel, ...

System and method for collimation in diagnostic imaging systems

A system and method for collimation in diagnostic imaging systems is provided. One collimator includes a plurality of parallel hole segments and a plurality of collimator bores within each of the plurality of parallel hole segments. Additionally, all of the plurality of collimator bores in at least one of the plurality of parallel hole segments have a first pointing direction and all of the plurality of collimator bores in at least one other of the plurality of parallel hole segments have a second pointing direction, wherein the plurality of parallel hole segments are arranged in a fanbeam collimation configuration. Further, the first pointing direction is different than the second pointing direction.

Method and System for Collimating

A collimating system for collimating radiation received under different angles for performing tomography includes a static collimator having a plurality of collimating apertures, and shutters for separately and temporarily shutting at least two of the collimating apertures. The shutters have a shutting element for blocking the at least two collimating apertures, and at least one collimating element distinct from the shutting element for collimating radiation passing through non-shutted collimating apertures in a direction so as to control overlap between radiation stemming from different non-shutted collimating apertures. An imaging system includes a collimating system, and a method for collimating and a corresponding controller and software related products.

METHOD OF CHANGING THE DIRECTION OF MOVEMENT OF THE BEAM OF ACCELERATED CHARGED PARTICLES, THE DEVICE FOR REALIZATION OF THIS METHOD, THE SOURCE OF ELECTRMAGNETIC RADIATION, THE LINEAR AND CYCLIC ACCELERATORS OF CHARGED PARTICLES, THE COLLIDER, AND THE MEANS FOR OBTAINING THE MAGNETIC FIELD GENERATED BY THE CURRENT OF ACCELERATED CHARGED PARTICLES

The inventions relate to a group that includes means for directing charged particles, enabling the acceleration and interaction thereof, and producing radiation caused by their movement, namely a method for changing the direction of an accelerated charged particle beam, a device for implementing said method, a source of undulator electromagnetic radiation, a linear and a circular charged particle accelerator, and a collider and means for producing a magnetic field created by a stream of accelerated charged particles. The method and the device for implementing same are based on the use of a curved channel () for transporting particles, which is made from a material that is able to be electrically charged, and the formation of the same kind of charge on the inside surface of the channel wall as that of the particles. The characterizing feature of these inventions is that they require the maintenance of a condition that relates the energy and the charge of the particles to the geometrical parameters of the channel, in particular the radius R of curvature of the longitudinal axis () thereof, and to the electrical strength of the wall material. The other devices in this group include a device for changing the direction of a beam, which defines the trajectory of the particles inside these devices to produce the required shape according to the function of the corresponding device and focuses the beam. The technical result is the possibility of rotating the beam through large angles without loss of intensity, significantly simplifying the design, and also reducing the mass and dimensions of all the devices, particularly by obviating the need for magnets and supply voltage and control voltage sources for such devices. 1. (canceled)2. The device for changing the direction of movement of the beam of accelerated charged particles , containing the bent channel for transporting the said particles , the wall of which is made from the material capable of electrization , ...

RADIATION IMAGING DEVICE

It is possible to reduce the weight of an anti-scatter collimator and to improve uniformity of scattered radiation shielding rate. A radiation imaging device has a radiation source, a radiation detector that detects radiation emitted from a focus of the radiation source, and an anti-scatter collimator provided between the radiation source and the radiation detector. The anti-scatter collimator has a septum provided at a predetermined interval along a radiation incident direction on a boundary between pixels of the radiation detector. The upper end of a top septum corresponds with a radiation incident surface. 1. A radiation imaging device comprising: a radiation source; a radiation detector that detects radiation emitted from a focus of the radiation source; and an anti-scatter collimator provided between the radiation source and the radiation detector ,wherein the anti-scatter collimator has a septum provided at a predetermined interval along a radiation incident direction on a boundary between pixels of the radiation detector, and an upper end of a top septum corresponds with the radiation incident surface.2. The radiation imaging device according to claim 1 ,wherein the shape of a gap between the septa is a parallelogram.3. The radiation imaging device according to claim 2 ,wherein assuming that an interior angle of the parallelogram as an acute angle is ϕ, the width between the septa is d, and the height of the anti-scatter collimator is h, d/h Подробнее

Collimator

An N-M tomography system comprising: a carrier for the subject of an examination procedure; a plurality of detector heads; a carrier for the detector heads; and a detector positioning arrangement operable to position the detector heads during performance of a scan without interference or collision between adjacent detector heads to establish a variable bore size and configuration for the examination. Additionally, collimated detectors providing variable spatial resolution for SPECT imaging and which can also be used for PET imaging, whereby one set of detectors can be selectably used for either modality, or for both simultaneously.

RADIATION DELIVERY DEVICES AND APPLICATIONS THEREOF

Radiation delivery devices are described herein having compact and lightweight design in comparison to existing architectures. A radiation delivery device comprises a source body including a plurality of radiation sources and a collimator component for directing radiation from the radiation sources to a common focal area, wherein the radiation sources are arranged within the collimator component. In some embodiments, for example, the source body is positioned within an interior cavity of the collimator component. 1. A radiation delivery device comprising:a source component including a plurality of radiation sources; anda collimator component for directing radiation from the radiation sources to a common focal area, wherein the radiation sources are arranged within the collimator component.2. The radiation delivery device of claim 1 , wherein the source component is positioned within an interior cavity of the collimator component.3. The radiation delivery device of claim 2 , wherein the collimator component comprises a primary collimator body including one or more sets of primary collimator passages for directing the radiation from the radiation sources.4. The radiation delivery device of claim 3 , wherein the source component and primary collimator body are rotatable relative to one another.5. The radiation delivery device of claim 3 , wherein the source component is rotatable to a position wherein the radiation sources face a shielding body.6. The radiation delivery device of claim 3 , wherein the collimator component further comprises at least one additional collimator body including one or more sets of additional collimator passages for directing the radiation from the radiation sources.7. The radiation delivery device of claim 6 , wherein the additional collimator passages are different than the primary collimator passages in shape and/or size.8. The radiation delivery device of claim 6 , wherein the primary collimator body is arranged within an interior cavity ...

INTERACTIVE DOSE MANIPULATION USING PRIORITIZED CONSTRAINTS

In a method of interactive manipulation of the dose distribution of a radiation treatment plan, after an initial candidate treatment plan has been obtained, a set of clinical goals are transferred into a set of constraints. Each constraint may be expressed in terms of a threshold value for a respective quality index of the dose distribution. The dose distribution can then be modified interactively by modifying the threshold values for the set of constraints. Re-optimization may be performed based on the modified threshold values. A user may assign relative priorities among the set of constraints. When a certain constraint is modified, a re-optimized treatment plan may not violate those constraints that have priorities that are higher than that of the modified constraint, but may violate those constraints that have priorities that are lower than that of the modified constraint. 1. A computer product comprising a non-transitory computer readable medium storing a plurality of instructions that when executed control a computer system to allow interactive manipulation of dose distribution of a radiation treatment plan using an external-beam radiation treatment system , the instructions comprising:obtaining, by the computer system, an initial radiation treatment plan, the initial radiation treatment plan producing an initial dose distribution that satisfies a plurality of clinical goals, wherein the plurality of clinical goals are expressed in terms of a plurality of initial threshold values for a plurality of quality indexes, each respective quality index relating to a respective statistical quantity of the initial dose distribution;converting, by the computer system, the plurality of clinical goals into a plurality of constraints relating to the plurality of quality indexes, each constraint having a respective initial reference value corresponding to the initial threshold value of the respective quality index, each respective constraint having a corresponding priority ...

REAL TIME X-RAY DOSIMETER USING DIODES WITH VARIABLE THICKNESS DEGRADER

A radiation exposure system having a beam source is provided. The system further includes a variable thickness degrader, positioned between the beam source and an object to be exposed, for providing varying degrees of degradation to a radiation beam emitted from the beam source onto the object. The system also includes a set of detectors, positioned between the variable thickness degrader and the object, for receiving and measuring only a portion of the radiation beam remaining after the degradation of the radiation beam by the variable thickness degrader. 119-. (canceled)20. A method for radiation beam control performed by a radiation exposure system having a beam source , the method comprising:providing, by a variable thickness degrader positioned between the beam source and an object to be exposed, varying degrees of degradation to a radiation beam emitted from the beam source onto the object; andreceiving and measuring, by a set of detectors positioned between the variable thickness degrader and the object, only a portion of the radiation beam remaining after the degradation of the radiation beam by the variable thickness degrader. The present invention relates generally to radiation exposure and, in particular, to a real time x-ray dosimeter that uses diodes with a variable thickness degrader.Applications that require long term X-ray exposures at high intensities (e.g., Total Ionizing Dose (TID) evaluation of semiconductor components) need the ability to accurately monitor and measure exposure times as well as the x-ray flux in real time.If an X-ray system shuts down (e.g., due to external factors such as cooling water supply issues), the test system needs the ability to record the time that the exposure ended for accurate calculation of the total dose applied to the sample.The test system needs the ability to monitor the X-ray flux as a function of time to measure beam stability over the exposure time. The test system can extend or reduce the exposure of the ...

REAL TIME X-RAY DOSIMETER USING DIODES WITH VARIABLE THICKNESS DEGRADER

A radiation exposure system having a beam source is provided. The system further includes a variable thickness degrader, positioned between the beam source and an object to be exposed, for providing varying degrees of degradation to a radiation beam emitted from the beam source onto the object. The system also includes a set of detectors, positioned between the variable thickness degrader and the object, for receiving and measuring only a portion of the radiation beam remaining after the degradation of the radiation beam by the variable thickness degrader. 1. A radiation exposure system having a beam source , the system further comprising:a variable thickness degrader, positioned between the beam source and an object to be exposed, for providing varying degrees of degradation to a radiation beam emitted from the beam source onto the object; anda set of detectors, positioned between the variable thickness degrader and the object, for receiving and measuring only a portion of the radiation beam remaining after the degradation of the radiation beam by the variable thickness degrader.2. The radiation exposure system of claim 1 , wherein the variable thickness degrader is formed to include a plurality of sections formed from a same material claim 1 , each of the plurality of sections having a respective one of a plurality of different thicknesses to provide a respective one of the varying degrees of degradation.3. The radiation exposure system of claim 2 , wherein each of the plurality of sections comprises a respective aperture for enabling an un-degraded portion of the radiation beam to pass there through onto the object.4. The radiation exposure system of claim 1 , wherein the variable thickness degrader is formed to include a plurality of sections claim 1 , each of the plurality of sections formed from a respective one of a plurality of different materials to provide a respective one of the varying degrees of degradation.5. The radiation exposure system of claim 4 , ...

Radiation delivery devices and applications thereof

Radiation delivery devices are described herein having compact and lightweight design in comparison to existing architectures. A radiation delivery device comprises a source body including a plurality of radiation sources and a collimator component for directing radiation from the radiation sources to a common focal area, wherein the radiation sources are arranged within the collimator component. In some embodiments, for example, the source body is positioned within an interior cavity of the collimator component.

JAW POSITION DETECTION APPARATUS AND MEDICAL ACCELERATOR TREATMENT HEAD

A jaw position detection apparatus is configured to detect position information of at least one jaw moving in an arc, and includes a connecting component, a conversion mechanism, and a displacement sensor. The connecting component is fixed on a jaw. The conversion mechanism is connected to the connecting component, and the conversion mechanism is configured to convert an arc motion of the connecting component into a linear motion when the connecting component moves in an arc with the jaw. The displacement sensor is connected to the conversion mechanism, and configured to detect displacement information of the linear motion of the conversion mechanism. 1. A jaw position detection apparatus , configured to detect position information of at least one jaw moving in an arc , the jaw position detection apparatus comprising:a connecting component fixed on a jaw;a conversion mechanism, connected to the connecting component; wherein the conversion mechanism is configured to convert an arcuate motion of the connecting component into a linear motion when the connecting component moves in an arc with the jaw; anda displacement sensor connected to the conversion mechanism, and configured to detect displacement information of the linear motion of conversion mechanism.2. The jaw position detection apparatus according to claim 1 , wherein the conversion mechanism includes a linear guide extending in a first direction and a sliding component slidable along the linear guide;the sliding component is provided with a first sliding groove and a second sliding groove along a second direction, an end portion of the connecting component is matched with and extended into the first sliding groove, the displacement sensor is connected to the second sliding groove; andthe second direction is perpendicular to the first direction.3. The jaw position detection apparatus according to claim 2 , wherein a distance of the first sliding groove extending in the second direction is greater than or equal ...

COMPUTED TOMOGRAPHY SYSTEM INCLUDING ROTATABLE COLLIMATOR

Disclosed is a computed tomography (CT) system which includes a rotatable collimator. The CT system includes a gantry. The gantry includes an X-ray source that generates X-rays, a collimator that is provided inside the X-ray source to be rotatable and that limits an irradiation area of the X-rays generated by the X-ray source, and an X-ray detector that is provided at a side portion of the X-ray source. 1. A computed tomography (CT) system , comprising:a gantry that includes a cylindrical opening area which is formed at a central portion of the gantry; andan object table configured to move an object into an opening area of the gantry, the object being an examination target,wherein the gantry includes:an X-ray source configured to generate X-rays;a collimator that is provided inside the X-ray source to be rotatable, and configured to limit an irradiation area of the X-rays generated by the X-ray source; andan X-ray detector that is provided at a side portion of the X-ray source.2. The CT system of claim 1 , wherein from among the X-ray source claim 1 , the collimator claim 1 , and the X-ray detector claim 1 , only the collimator is rotatable claim 1 , and each of the X-ray source and the X-ray detector is fixed so as not to rotate.3. The CT system of claim 1 , wherein the X-ray source is provided at each of a first side portion and a second side portion of the X-ray detector.4. The CT system of claim 1 , wherein each of the X-ray source claim 1 , the collimator claim 1 , and the X-ray detector is provided in a ring type.5. The CT system of claim 1 , wherein the X-ray detector includes a plurality of detectors.6. The CT system of claim 5 , wherein each of the plurality of detectors included in the X-ray detector includes at least one from among a solid state detector (SSD) claim 5 , a Xe-gas type detector claim 5 , and a photon-counting detector.7. The CT system of claim 1 , wherein the collimator includes a plurality of slits that are configured to limit an ...

X-RAY TUBE

A fluoroscopic system is disclosed with capability of differential exposure of different input areas of an image intensifier. The x-ray beam solid angle is limited by a collimator that is relatively near to the focal point of the x-ray tube, to occupy an area smaller then the input area of the image intensifier. Means to deflect the electron beam of the x-ray tube in two dimensions are constructed with the x-ray tube to provide scanning capability of the complete input area with full control on the motion function. The collimator may also be moved to control beam size and/or position at the image intensifier. 1. An x-ray system comprising:an x-ray tube assembly;a collimator forming an aperture;an image detector;a monitor configured to display detected images;means for determining the location of a Region of Interest (ROI) of a patient on said displayed image;a first controller connected with said means for determining the location of a ROI;an image processing unit connected with said image detector and said monitor and said first controller, said image processing unit configured to modify the detected image for display on said monitor according to the image part in said ROI; anda second controller connected with said x-ray tube assembly, said second controller configured to control operating parameters of said x-ray tube,wherein said x-ray tube assembly comprises a cathode, an anode; andmeans for controlling collision location of electrons emitted from the cathode on the anode in reference to said collimator aperture, for controlling the direction of an emitted x-ray beam.2. The x-ray system of claim 1 , wherein said means for determining the location of a ROI comprise an eye tracker.3. The x-ray system according to claim 1 , wherein said first controller is further configured to calculate a collision location of electrons emitted from the cathode on the anode according to said determined location of the ROI.4. The x-ray system according to claim 1 , wherein said ...

X-RAY IMAGING DEVICE

When an X-ray detector is removed from a storage part, a sensor senses this, and transmits to an up and down control part a signal indicating that the X-ray detector has been taken out of the storage part. Upon receipt of the signal, the up and down control part releases braking force by electro permanent magnets. In doing so, sticking force of the electro permanent magnet on a fixing part, and sticking force of the electro permanent magnet on a stopper plate are released. The weight of a counter weight is larger than the total value of the weights of the arm, X-ray tube, collimator, and the like, and therefore in a state where the arm is released from being fixed by the electro permanent magnets, the arm starts to move up together with the X-ray tube and the collimator.

COUNTERBALANCING OF DETECTORS FOR NUCLEAR MEDICINE TOMOGRAPHY SYSTEMS

An N-M tomography system comprising: a carrier for the subject of an examination procedure; a plurality of detector heads; a carrier for the detector heads; and a detector positioning arrangement operable to position the detector heads during performance of a scan without interference or collision between adjacent detector heads to establish a variable bore size and configuration for the examination. Additionally, collimated detectors providing variable spatial resolution for SPECT imaging and which can also be used for PET imaging, whereby one set of detectors can be selectably used for either modality, or for both simultaneously. 1. A nuclear medicine tomography system comprising:a detector carrier; a detector head;', 'a counterbalance coupled to said detector head;', 'at least one actuator configured to move said detector and said counterbalance in opposing directions., 'a plurality of detector modules mounted on said detector carrier, one or more detector module comprising2. The nuclear medicine tomography system of claim 1 , wherein said at least one actuator is configured to move said detector and said counterbalance in opposing directions with respect to said detector carrier.3. The nuclear medicine tomography system of claim 1 , wherein said at least one actuator is configured to move said detector and said counterbalance in opposing directions radially with respect to said detector carrier.4. The nuclear medicine tomography system of claim 1 , wherein one or more of said plurality of detector modules is mounted to said detector carrier by a linear rail;wherein said detector head and said counterbalance are coupled to said linear rail and said actuator is configured to move said detector head and said counterbalance in opposing directions on said linear rail.5. The nuclear medicine tomography system of claim 4 , wherein said linear rail is fixed in position with respect to said detector carrier.6. The nuclear medicine tomography system of claim 1 , wherein ...

MOBILE X-RAY IMAGING APPARATUS

In order to provide a mobile X-ray imaging apparatus having less possibility that a cable comes into contact with an object, the apparatus has a carriage and an X-ray imaging unit mounted on the carriage, and the X-ray imaging unit is provided with an X-ray generator, an arm holding one end of the X-ray generator, a supporting post supporting the other end of the arm in a vertically movable manner, and a main body supplying electric power. Conductor filaments are arranged at intervals along an axial direction on the supporting post, conductor brushes coming into contact with the filaments respectively are arranged on the other end of the arm, the brushes move vertically along the filaments in a state of coming into contact with the filaments with the vertical movement of the arm, and the main body supplies electric power to the X-ray generator through the filaments and the brushes. 1. A mobile X-ray imaging apparatus that has a carriage and an X-ray imaging unit mounted on the carriage ,wherein the X-ray imaging unit includes an X-ray generator; an arm that holds one end of the X-ray generator; a supporting post that supports the other end of the arm in a vertically movable manner, and a main body that supplies electric power at least to generate an X-ray to the X-ray generator,wherein a plurality of conductor filaments are arranged at intervals along an axial direction on the supporting post, a plurality of conductor brushes coming into contact with the filaments respectively are arranged on the other end of the arm, and the brushes move vertically along the filaments in a state of coming into contact with the filaments with vertical movement of the arm, andwherein the main body supplies the electric power to the X-ray generator through the filaments and the brushes.2. The mobile X-ray imaging apparatus according to claim 1 ,wherein an opening is provided along the axial direction on a side surface of the supporting post, and a plurality of the filaments are ...

X-RAY DIAGNOSIS APPARATUS

An X-ray diagnosis apparatus according to an embodiment acquires a first X-ray image and a second X-ray image by using mutually-different radiation doses; acquires a third X-ray image based on X-rays radiated onto a region of interest of the subject and onto a region other than the region of interest in mutually-different radiation doses; obtains position information of the region of interest; and on a basis of the position information, generates a subtraction image by calculating a difference between the region of interest in the third X-ray image and a region corresponding to the region of interest in the first X-ray image and calculating a difference between the region other than the region of interest in the third X-ray image and a region corresponding to the region other than the region of interest in the second X-ray image. 1. An X-ray diagnosis apparatus comprising processing circuitry configured:to acquire a first X-ray image on a basis of X-rays radiated onto a subject in a first radiation dose;to acquire a second X-ray image on a basis of X-rays radiated onto the subject in a second radiation dose lower than the first radiation dose;to acquire a third X-ray image on a basis of X-rays radiated onto a region of interest of the subject into which a medical device is inserted and onto a region other than the region of interest, in mutually-different radiation doses;to obtain position information of the region of interest in the third X-ray image;to obtain positions corresponding to the region of interest in the first X-ray image and in the second X-ray image on a basis of the position information; andto generate a subtraction image by calculating a difference between the region of interest in the third X-ray image and a region corresponding to the region of interest in the first X-ray image and calculating a difference between a region other than the region of interest in the third X-ray image and a region corresponding to the region other than the region of ...

MEDICAL IMAGE SYSTEM AND METHOD FOR OPERATING MEDICAL IMAGE SYSTEM

Provided is a monitoring device that comprises; a port connected to a network interconnecting a plurality of units of an X-ray apparatus, and configured to transmit or receive data to or from each of the plurality of units; and a controller configured to control the port to perform communication with each of the plurality of units, and to monitor operational states of the plurality of units, based on the data. 1. A monitoring device comprising;a port connected to a network interconnecting a plurality of units of an X-ray apparatus, and configured to transmit or receive data to or from each of the plurality of units; anda controller configured to control the port to perform communication with each of the plurality of units, and to monitor operational states of the plurality of units, based on the data.2. The monitoring device of claim 1 , wherein the controller is further configured to control the port to receive first data comprising an operational state of a first unit from among the plurality of units.3. The monitoring device of claim 2 , wherein the controller is further configured to determine the operational state of the first unit claim 2 , based on the first data claim 2 , and to generate an operation command for the first unit according to the determined operational state.4. The monitoring device of claim 3 , wherein the port is further configured to transmit the operation command for the first unit to the first unit.5. The monitoring device of claim 1 , wherein the data uses at least one protocol from among a controller area network (CAN) claim 1 , a local interconnect network (LIN) claim 1 , a FlexRay claim 1 , and a media oriented system transport (MOST).6. The monitoring device of claim 1 , further comprising a display device configured to display the monitoring result.7. The monitoring device of claim 6 , wherein the display device is further configured to display a screen image displaying the plurality of units of the X-ray apparatus on a screen of the ...

Combined Scatter and Transmission Multi-View Imaging System

The present specification discloses a multi-view X-ray inspection system having, in one of several embodiments, a three-view configuration with three X-ray sources. Each X-ray source rotates and is configured to emit a rotating X-ray pencil beam and at least two detector arrays, where each detector array has multiple non-pixellated detectors such that at least a portion of the non-pixellated detectors are oriented toward both the two X-ray sources. 1. An X-ray inspection system for scanning an object , the inspection system comprising:at least two rotating X-ray sources configured to simultaneously emit rotating X-ray beams, each of said X-ray beams defining a transmission path;at least two detector arrays, wherein each of said at least two detector arrays is placed opposite one of the at least two X-ray sources to form a scanning area; andat least one controller for controlling each of the X-ray sources to scan the object in a coordinated manner, such that the X-ray beams of the at least two X-ray sources do not cross transmission paths.2. The X-ray inspection system of claim 1 , wherein each of the emitted X-ray beams is a pencil beam and wherein each X-ray source rotates over a predetermined angle of rotation.3. The X-ray inspection system of claim 1 , wherein each detector is a non-pixellated detector.4. The X-ray inspection system of claims 1 , wherein a first claims 1 , a second and a third rotating X-ray sources are configured to simultaneously emit rotating X-ray beams claims 1 , wherein the first X-ray source scans the object by starting at a substantially vertical position and moving in a clockwise manner; wherein the second X-ray source scans the object by starting at a substantially downward vertical position and moving in a clockwise manner; and wherein the third X-ray source scans the object by starting at a substantially horizontal position and moving in a clockwise manner.5. The X-ray inspection system of claim 1 , wherein the controller causes each ...

Dual Mode X-Ray Vehicle Scanning System

A variable mode X-ray transmission system is provided that can be operated in low or high dose rate modes depending upon the area or portion of the vehicle to be screened. In one embodiment, variable dose rate is achieved by use of a novel collimator. The systems disclosed in this application enable the scanning of a vehicle cab portion (occupied by people, such as a driver) at low dose rate, which is safe for human beings, while allowing the scanning of the cargo portion (unoccupied by people) at a high dose rate. Rapid switching from low dose rate to high dose rate operating mode is provided, while striking a balance between high material penetration for cargo portion and low intensity exposure that is safe for occupants in the cab portion of the inspected vehicle. 1. An X-ray inspection system with variable energy dose rate for screening vehicles , the system comprising:an X-ray source for generating an X-ray beam,at least one detector array to receive the x-ray beam signals transmitted through the inspected vehicle, anda collimator that modulates the intensity of X-ray beam to produce a low X-ray energy dose rate or a high X-ray energy dose rate depending upon a portion of the vehicle being screened.2. The X-ray inspection system of wherein the dose rate varies such that the portion of the vehicle carrying people receives an acceptable lower energy dosage as compared to the portion of the vehicle carrying cargo.3. The X-ray inspection system of further comprising a plurality of sensors to determine which portion of the vehicle is passing through the scanning region.4. The X-ray inspection system of claim 1 , wherein said collimator comprises an insert located within an opening defined by a first block and a second block claim 1 , wherein said insert is rotated to vary the delivered dose rate.5. The X-ray inspection system of further comprising an electrical control system for rotating said collimator insert at the appropriate time based on input from a plurality ...

X-RAY BEAM TRANSMISSION PROFILE SHAPER

An imaging system () includes a radiation source () that emits radiation from a focal spot () in a direction of an examination region. The imaging system further includes a beam shaper (), located between the focal spot and the examination region, that shapes an x-ray transmission profile of the radiation emitted from the source and incident on the beam shaper such that the radiation leaving the beam shaper has a pre-determined transmission profile. 1. An imaging system , comprising:a radiation source that emits radiation from a focal spot in a direction of an examination region; anda beam shaper, located between the focal spot and the examination region, that shapes an x-ray transmission profile of the radiation emitted from the source and incident on the beam shaper such that the radiation leaving the beam shaper has a pre-determined transmission profile.2. The imaging system of claim 1 , wherein the beam shaper has a central region claim 1 , and the beam shaper claim 1 , comprising:a two dimensional array of individual radiation attenuating elements which are separated from each other and arranged such that a density of the attenuating elements varies from the central region in a direction away from the central region along an x-axis direction, wherein the individual radiation attenuating elements fully or substantially fully attenuate x-rays.3. The imaging system of claim 2 , wherein the attenuating elements are arranged such that a density of the attenuating elements varies radially from the central region in a direction away from the central region in an x-y plane.4. The imaging system of claim 2 , wherein the attenuating elements are focused at the focal spot.5. The imaging system of claim 4 , wherein the attenuating elements attenuate off-focal rays.6. The imaging system of claim 2 , wherein a pattern of the attenuating elements in the beam shaper is deterministic.7. The imaging system of claim 2 , wherein a pattern of the attenuating elements in the beam ...

X-RAY COLLIMATOR AND X-RAY IMAGING APPARATUS USING SAME

The present invention relates to an X-ray collimator capable of adjusting a field of view during X-ray imaging and an X-ray imaging apparatus using the same, the apparatus including an X-ray light source configured to emit X-rays, an X-ray detector configured to detect the X-rays, and a collimator configured to provide an opening to determine an FOV of the X-rays between the X-ray light source and the X-ray detector, wherein the opening is configured such that at least one of a first edge at an entrance side facing the X-ray light source, and a second edge at an exit side facing the X-ray detector is formed in a curved shape. 1. An X-ray imaging apparatus comprising:an X-ray light source configured to emit X-rays;an X-ray detector configured to detect the X-rays; anda collimator configured to provide an opening to determine an FOV of the X-rays between the X-ray light source and the X-ray detector,wherein the opening is configured such that at least one of a first edge at an entrance side facing the X-ray light source and a second edge at an exit side facing the X-ray detector is formed in a curved shape.2. The apparatus of claim 1 , wherein the X-ray light source and the collimator are arranged in a fixed relative position claim 1 , andthe first edge is in a vertically angled shape and the second edge is in the curved shape.3. The apparatus of claim 1 , wherein the X-ray detector and the collimator are moved with respect to each other in one direction claim 1 ,a first side edge of the opening facing the moving direction is configured to be in a vertically angled shape at the first edge and in a curved shape at the second edge, anda second side edge of the opening is configured to be in the curved shape at both the first edge and the second edge.4. The apparatus of claim 1 , wherein the X-ray detector and the collimator are moved with respect to each other in opposite directions claim 1 , andthe opening includes the first edge and the second edge being in the curved ...

X-ray imaging apparatus and method for controlling the same

An X-ray imaging apparatus includes an imaging device that captures a camera image of a target, a controller that stitches a plurality of X-ray images of a plurality of divided regions to generate one X-ray image of the target, and a display that displays a settings window providing a graphical user interface for receiving a setting of an X-ray irradiation condition for the divided regions, and displays the camera image in which positions of the divided regions are displayed.

Apparatus and Method for Digital Radiographic Inspection of Pipes

A digital radiographic tool with drive car for moving along track sections attached longitudinally to a pipe is shown. The drive car carries (1) a collimator on one side of the pipe for projecting x-rays or gamma rays on said pipe and (2) a linear digital array on an opposing side of the pipe for collecting x-rays or gamma rays that have passed through the pipe. The collected rays are processed to indicate any defects in the pipe. The digital radiographic tool is adjustable to allow inspection of pipes that have obstructions adjacent thereto. 1. A digital radiographic tool for inspecting a pipe with obstructions adjacent said pipe , a power source to operate said digital radiographic tool , said digital radiographic tool comprising:a track assembly removably secured along said pipe, said track assembly being in sections joined and held together by a latch;a gear rack in said track assembly and extending along with said track assembly;a drive car mounted on said track assembly;an arm assembly attached on a first end to said drive car, which arm assembly is perpendicular and adjacent to said pipe, said arm assembly being extendable along a longitudinal axis thereof;a linear digital array being attached to a second end of said arm assembly and held adjacent said pipe;a collimator assembly attached to said drive car on a near end thereof;a collimator on a far end of said collimator assembly, said collimator for directing x-rays on gamma rays toward said pipe, said linear digital array for collecting x-rays or gamma rays that pass through said pipe;gears in said drive car connected to said gear rack in said track assembly;a motor in said drive car for turning said gears, said power source being connected to said motor, said collimator and said linear digital array so that as said drive car is moved along said track assembly by said motor via said gears, said collimator directs said x-rays or gamma rays toward said pipe and said linear digital array collects any x-rays or ...

COLLIMATOR APPARATUS, RADIATION SYSTEM, AND METHOD FOR CONTROLLING COLLIMATORS

There is provided a collimator apparatus including a first collimator configured to prevent a leakage of radiation, wherein a target for converting electron beam emitted from an electron beam source into the radiation is disposed in the first collimator, and a second collimator, wherein the radiation passes through the second collimator along a central axis of the second collimator, the second collimator being disposed in an inner space formed in the first collimator, a gap between a surface of the inner space and the second collimator being provided, wherein the second collimator swings within the inner space of the first collimator. 1. A collimator apparatus comprising:a first collimator configured to prevent a leakage of radiation, wherein a target for converting electron beam emitted from by an electron beam source into the radiation is disposed in the first collimator; anda second collimator, wherein the radiation passes through the second collimator along a central axis of the second collimator, the second collimator being disposed in an inner space formed in the first collimator, a gap between a surface of the inner space and the second collimator being provided, whereinthe second collimator swings within the inner space of the first collimator.2. The collimator apparatus according to claim 1 , further comprising a third collimator disposed in the second collimator claim 1 , the third collimator being exchangeable.3. The collimator apparatus according to claim 2 , wherein the third collimator is fixed in an inner space of the second collimator claim 2 , the third collimator swinging with the second collimator.4. The collimator apparatus according to claim 1 , further comprising:a swing mechanism configured to cause the second collimator to swing in two directions, anda swing mechanism control unit configured to control the swing mechanism.5. The collimator apparatus according to claim 4 , wherein the swing mechanism control unit controls the swing mechanism ...

APPARATUS FOR DETECTING POSITION OF RADIATION SOURCE

The present invention relates to an apparatus for determining the location of a radiation source. The apparatus for determining the location of a radiation source according to the present invention comprises: a collimator part for selectively passing radiation therethrough according to the direction in which the radiation is incident; a scintillator part for converting the radiation incident from the collimator part into a light ray; a first optical sensor for converting the light ray incident from one end of the scintillator part into a first optical signal; a second optical sensor for converting the light ray incident from the other end of the scintillator part into a second optical signal; and a location information acquisition part for acquiring information on the location where the light ray is generated in the scintillator part, by using the second optical signal and the second optical signal. 1. A system for determining the location of a radiation source , comprising: a collimator unit through which radiation selectively passes depending on its incident direction; a scintillator unit converting the incident radiation from the collimator unit into light; a first optical sensor converting the incident light from one end of the scintillator unit into a first optical signal; a second optical sensor converting the incident light from the other end of the scintillator unit into a second optical signal; and a location information acquisition unit acquiring information on where the light is generated in the scintillator unit based on the first and second optical signals.2. The system according to claim 1 , wherein the location information acquisition unit generates first optical energy information on the first optical signal and second optical energy information on the second optical signal and uses the first optical energy information and the second light energy information to acquire the information on where the light is generated.3. The system according to claim 1 ...

RADIATION FIELD CONTROL DEVICE AND NOVEL RADIOTHERAPY EQUIPMENT

The invention discloses a radiation field control device and radiotherapy equipment. Two or more different-sized light limiting barrels are directly machined on a light limiting barrel support, or two or more light limiting barrel mounting portions are arranged on the light limiting barrel support, then the two or more light limiting barrels are respectively mounted in the light limiting barrel mounting portions in a one-to-one correspondence manner, any one of the light limiting barrels can move to a working position through a light limiting barrel switching device, in this case, when the light limiting barrel having suitable size is required, the unsuitable light limiting barrel does not need to be detached, and the required light limiting barrel can be used conveniently and quickly by directly controlling the light limiting barrel switching device. By adopting the solution, the radiation field control device is not only simple in structure, convenient and quick to use, but also greatly improves the working efficiency. 1. A radiation field control device , comprising:a light limiting barrel support, wherein at least two light limiting barrels or at least two light limiting barrel mounting portions are arranged on the light limiting barrel support, the light limiting barrels are directly machined on the light limiting barrel support, and the light limiting barrel mounting portions are used for fixedly mounting or detachably mounting the light limiting barrels; anda light limiting barrel switching device, used for driving the light limiting barrel support to move, thus enabling any one of the light limiting barrels to move to a working position as required.2. The radiation field control device of claim 1 , wherein the light limiting barrel support is linear claim 1 , sector-shaped claim 1 , ring-shaped or ray-shaped.3. The radiation field control device of claim 2 , wherein the light limiting barrel support comprises a support body and detachable light limiting ...

COLLIMATOR MODULE, RADIATION DETECTOR HAVING COLLIMATOR MODULE, RADIOLOGICAL IMAGING APPARATUS HAVING COLLIMATOR MODULE, AND CONTROL METHOD OF RADIOLOGICAL IMAGING APPARATUS

A collimator module which may be disposed in a radiation detector of a radiological imaging apparatus using the collimator module may include a first collimator having a plurality of openings, through which radiation having passed through an object passes, and a second collimator located below the first collimator and having a plurality of openings, through which radiation having passed through the first collimator passes. The first collimator or the second collimator is designed so as to be movable or rotatable relative to the second collimator or the first collimator. Through movement of the first collimator or the second collimator, the size of a passage region that allows radiation having passed through the object to pass through the first collimator or the second collimator is adjustable. 1. A collimator module comprising:a first collimator having a plurality of openings, to receive radiation; anda second collimator having a plurality of openings, to receive radiation having passed through the first collimator,wherein at least one of the first collimator and the second collimator is movable or rotatable relative to the other collimator.2. The collimator module according to claim 1 , wherein a size of a passage region that allows radiation to pass through the first collimator and the second collimator is adjusted according to movement or rotation of the first collimator or the second collimator.3. The collimator module according to claim 1 , wherein at least one of the first collimator and the second collimator is movable or rotatable such that some of the openings of the first collimator and some of the openings of the second collimator deviate from each other.4. The collimator module according to claim 1 , wherein the first collimator or the second collimator is moved toward or away from the second collimator or the first collimator.5. The collimator module according to claim 1 , wherein the openings of the first collimator or the second collimator are ...

RADIATION THERAPY WITH ORTHOVOLTAGE X-RAY MINIBEAMS

A method for delivering therapeutic radiation to a target includes positioning a multi-aperture collimator on the skin within a trajectory of orthovoltage x-rays directed at the target, thus generating an array of minibeams, each of width between 0.1 mm to 0.6 mm. The skin is irradiated with the array. An effective beam of therapeutic radiation, which may be a solid beam, is delivered to the target at a predetermined tissue depth by merging adjacent orthovoltage x-ray minibeams sufficiently to form the effective beam. The effective beam may be formed proximal to the target. The depth at which the effective, preferably, solid, beam is formed is controlled by varying one or more of the spacing of the minibeams in the array, the minibeam width, the distance from the x-ray source to the collimator, and the x-ray source spot size. Planar minibeams can be arc-scanned while continuously modulating beam shape and intensity. 1. A method for delivering therapeutic radiation to a target within a subject , wherein the target is located at a predetermined depth , the predetermined depth being measured from an irradiated portion of a surface of the skin of the subject , the method comprising:positioning a multi-aperture collimator within a trajectory of radiation produced by an x-ray source generating orthovoltage x-rays, the trajectory of orthovoltage x-rays being directed at the target, the multi-aperture collimator positioned and configured to generate an array of minibeams on the surface of the skin comprising slightly diverging spatially distinct minibeams having a predetermined center-center spacing between adjacent minibeams, and wherein a width of each minibeam is between about 0.1 mm and about 0.6 mm;irradiating the surface of the skin with the array of minibeams; anddelivering an effective beam of therapeutic radiation to the target, said delivering including controlling a tissue depth from the irradiated surface of the skin at which adjacent orthovoltage x-ray ...

Method Of Manufacturing High Aspect Ratio Structure And Method Of Manufacturing Ultrasonic Probe

A method of manufacturing a high aspect ratio structure includes: a hole forming step of forming a plurality of holes in at least one principal surface of a substrate; a resist forming step of forming a first area with a resist layer and a second area without the resist layer on the principal surface provided with the plurality of holes after the hole forming step ends; and a concave portion forming step of immersing the substrate into an etching solution to form a concave portion in the substrate corresponding to the second area. 1. A method of manufacturing a high aspect ratio structure comprising:a hole forming step of forming a plurality of holes in at least one principal surface of a substrate;a resist forming step of forming a first area with a resist layer and a second area without the resist layer on the principal surface provided with the plurality of holes after the hole forming step ends; anda concave portion forming step of immersing the substrate into an etching solution to form a concave portion in the substrate corresponding to the second area.2. The method of manufacturing a high aspect ratio structure according to claim 1 , whereinthe hole forming step is performed by an anode oxidation treatment or an anode forming treatment.3. The method of manufacturing a high aspect ratio structure according to claim 1 , whereinthe substrate is formed of aluminum, tungsten, molybdenum, silicon, gallium arsenide, or indium-phosphorus.4. The method of manufacturing a high aspect ratio structure according to claim 1 , further comprising:an X-ray absorbing material burying step of burying an X-ray absorbing material capable of absorbing an X-ray into the concave portion.5. The method of manufacturing a high aspect ratio structure according to claim 4 , whereinin the X-ray absorbing material burying step, metal as the X-ray absorbing material is buried by electroforming.6. The method of manufacturing a high aspect ratio structure according to claim 1 , whereinthe ...

Mini-beam collimators for medical linear accelerators

An apparatus for delivery of spatially fractionated radiation treatment to a patient, the apparatus comprising: a radiation source for generating an open radiation beam oriented along a beam axis and having photon energies up to and including a maximum photon energy greater than 0.5 MV; a mini-beam collimator located in a path of the open radiation beam, the mini-beam collimator comprising a plurality of generally planar blades extending between an entrance aperture onto which the open beam impinges and an exit aperture, the mini-beam collimator interacting with the open radiation beam to produce an output beam emitted from the exit aperture, oriented along the beam axis and comprising a spatially fractionated mini-beam dose profile, the spatially fractionated mini-beam dose profile comprising: a plurality of dose peaks at which the dose is a local maximum, the dose peaks spaced apart from one another in a transverse direction that is transverse to the beam axis; and a plurality of dose valleys at which the dose is a local minimum, each dose valley located between a pair of transversely adjacent dose peaks.

Collimater, radiation detection device, and radiation inspection device

Provided are a collimator, a radiation detection device, and a radiation inspection device that are capable of further removing scattered radiation. This collimator 20 comprises: a radiation blocking section 22; and a radiation transmission section 21 that has a lower radiation blocking rate than the radiation blocking section 22, penetrates the radiation blocking section 22, and is solid. The X-ray transmission section 21 of the collimator 20 is solid therefore X-rays on the low-energy side that have been scattered by a subject B in the X-ray transmission section 21 are absorbed, as a result of this collimator 20. Accordingly, there is little noise contained in X-rays detected by a radiation detection element 30 and a high-resolution X-ray image can be obtained.

COLLIMATOR FOR RADIOTHERAPY APPARATUS

A collimator for a radiotherapy apparatus, comprising a block of isolation-attenuating material having a front face forming the leading edge of tie block and at least one main rear face defining the trailing edge of the block. In which the or each rear face is substantially planar in the direction of the depth of the block and non-parallel to the front face. The collimator may form part of a radiotherapy apparatus, and methods of operation of such apparatus are described. 115.-. (canceled)16. A collimator for a radiotherapy apparatus comprising: a top face and a bottom face, each transverse to a propagation direction of the beam and defining a depth direction extending from the top face to the bottom face; and', 'a front face defining a leading edge; and', 'at least one main rear face; and', 'a material disposed against the at least one main rear face., 'a block of radiation-attenuating material for moving into and out of a beam of therapeutic radiation, the block having17. The collimator according to claim 16 , wherein the material is the same radiation-attenuating material.18. The collimator according to claim 16 , wherein the material is different from the radiation-attenuating material.19. The collimator according to claim 16 , wherein the material is Integral with the block.20. The collimator according to claim 16 , wherein the material has a lesser thickness than the block.21. The collimator according to claim 16 , wherein the at least one main rear face is substantially planar in the depth direction of the block.22. The collimator according to claim 16 , wherein the block has a non-uniform thickness in the depth direction.23. The collimator according to claim 16 , wherein the at least one main rear face comprises two main rear faces forming a concave V-shape transverse to the propagation direction of the beam claim 16 , in which each face of the V-shape rear face is nonparallel to the front face.24. The collimator according to claim 23 , wherein the material ...

RADIOLOGICAL IMAGING SYSTEM

A radiological imaging system includes: a radiological imaging apparatus configured to generate image data in accordance with a dose of delivered radiation; and a radiation source configured to deliver radiation to the radiological imaging apparatus, wherein the radiation source is placed so that a tube axis of a rotating anode extends in a direction perpendicular to a body axis of an object being imaged. 1. A radiological imaging system comprising:a radiological imaging apparatus configured to generate image data in accordance with a dose of delivered radiation; anda radiation source configured to deliver radiation to the radiological imaging apparatus,wherein the radiation source is placed so that a tube axis of a rotating anode extends in a direction perpendicular to a body axis of an object being imaged.2. The radiological imaging system according to claim 1 ,wherein the radiation source is designed to be switched between a position in which the tube axis of the rotating anode extends in a direction parallel to the body axis of the object, and a position in which the tube axis of the rotating anode extends in a direction perpendicular to the body axis of the object.3. The radiological imaging system according to claim 1 , further comprising:a mechanism configured to move the radiological imaging apparatus in a direction of the body axis of the object; anda collimator provided between the radiation source and the radiological imaging apparatus, the collimator having an aperture and being movable in a direction parallel to the body axis of the object,wherein radiation is released from the radiation source a plurality of times without change in release direction, andlong-length imaging is performed by moving the collimator in the direction parallel to the body axis of the object in synchronization with change in the position of the radiological imaging apparatus, so that radiation that is released from the radiation source and passes through the aperture is ...

ANTI-SCATTER COLLIMATOR FOR RADIATION IMAGING MODALITIES

Among other things, an anti-scatter collimator is provided including a first layer defining a first retaining member at a first surface. A second layer defines a second retaining member at a first surface that faces the first surface of the first layer. A septum is disposed between the first layer and the second layer and physically contacts the first retaining member and the second retaining member. The first retaining member and the second retaining member maintain a position of the septum relative to the first layer and the second layer. The septum has a third attenuation coefficient that is greater than a first attenuation coefficient of the first layer and a second attenuation coefficient of the second layer. An end support is attached to the first layer and to the second layer. The end support borders an end of the septum. 1. An anti-scatter collimator , comprising:a first layer defining a first retaining member at a first surface of the first layer, wherein the first layer has a first attenuation coefficient;a second layer defining a second retaining member at a first surface of the second layer that faces the first surface of the first layer, wherein the second layer has a second attenuation coefficient; and the first retaining member and the second retaining member maintain a position of the septum relative to the first layer and the second layer, and', 'the septum has a third attenuation coefficient that is greater than the first attenuation coefficient and the second attenuation coefficient; and, 'a septum disposed between the first layer and the second layer and physically contacting the first retaining member and the second retaining member, whereinan end support attached to the first layer and to the second layer, wherein the end support borders an end of the septum.2. The anti-scatter collimator of claim 1 , wherein:a groove is defined in the first layer and extends from the first surface of the first layer toward a second surface of the first layer ...

GAMMA RADIATION IMAGING DEVICE AND IMAGING METHOD THEREOF

The present disclosure provides a gamma ray imaging device and an imaging method, where the imaging device includes a plurality of separate detectors. The plurality of separate detectors are provided at an appropriate spatial position, in an appropriate arrangement manner and are of an appropriate detector material, such that when rays emitted from different positions in an imaging area reach at least one of the plurality of separate detectors, at least one of the thicknesses of the detectors, the materials of the detectors, and the numbers of the detectors though which the rays pass are different, thereby achieving the effect of determining the directions of rays. 1. A gamma ray imaging device , comprising:a plurality of separate detectors,wherein rays emitted from different positions in an imaging area reach at least one of the plurality of separate detectors through different sets of one or more other detectors of the plurality of separate detectors, andwherein the sets of one or more other detector are different in at least one of thickness of detector, material of detector, or number of detectors.2. The imaging device according to claim 1 , wherein the rays emitted from different positions received by the at least one of the plurality of separate detectors have different attenuation ratios due to passing through the sets of one or more other detector which are different in at least one of thickness of detector claim 1 , material of detector claim 1 , or number of detectors claim 1 , so as to determine directions of the rays according to the attenuation ratios of the rays.3. The imaging device according to claim 1 , wherein thicknesses of two adjacent detectors of the plurality of separate detectors are different.4. The imaging device according to claim 1 , wherein the plurality of separate detectors comprise at least two detectors arranged along a movement direction of photons claim 1 , and the at least two detectors comprise a front detector and a rear ...

SYSTEM FOR CONTROLLING AN X-RAY DETECTOR

The present invention relates to a system () for controlling an X-ray detector () for detection of X-ray radiation, an X-ray imaging arrangement () comprising such system () and a method for controlling an X-ray detector () for detection of X-ray radiation. The system () for detection of X-ray radiation comprises a trigger device (). The trigger device () is configured to be arranged remotely from the X-ray detector (). The trigger device () is furthermore configured to be data-linked to the X-ray detector (). The trigger device () is configured to determine a start of an X-ray exposure of an X-ray tube (), to generate an activation signal and to communicate such signal the X-ray detector () to activate image detection. 1. System for controlling an X-ray detector for detection of X-ray radiation , comprising a trigger device , wherein the trigger device is configured to be arranged remotely from to the X-ray detector; wherein the trigger device is configured to be data-linked to the X-ray detector; wherein the trigger device is configured to determine a start of an X-ray exposure by an X-ray tube in response to detecting X-ray radiation emitted by said X-ray tube , to generate an activation signal and to communicate said activation signal to the X-ray detector to activate detection of X-ray radiation by said detector; and wherein the trigger device comprises a tilt sensor configured for measuring the orientation of the trigger device , wherein the trigger device is configured to select from a plurality of X-ray detectors an X-ray detector having a substantially matching orientation.2. System according to claim 1 , wherein the trigger device is further configured to determine an end of an X-ray exposure by the X-ray tube claim 1 , to generate an end signal and to communicate said end signal to the X-ray detector to stop detection of X-ray radiation by said detector.3. System according to claim 1 , wherein the trigger device is a dose area product meter configured to ...

SYSTEMS AND METHODS FOR PERFORMING BACKSCATTER THREE DIMENSIONAL IMAGING FROM ONE SIDE OF A STRUCTURE

An imaging system for generating three dimensional image data using X-ray backscattering from one side of a structure is provided. The imaging system includes at least one X-ray source, at least one rotating collimator coupled to the at least one X-ray source, an X-ray detector, and a controller coupled to the at least one X-ray source, the at least one rotating collimator and the X-ray detector. The controller is configured to emit X-rays from the at least one X-ray source through the at least one rotating collimator towards the one side of the structure. Additionally, the controller is configured to detect backscattered X-rays from the one side of the structure, using the X-ray detector, at a plurality of depths within the structure. Additionally, the controller is configured to generate three dimensional image data of the structure based on the detected backscattered X-rays. 1. An imaging system for generating three dimensional image data using X-ray backscattering from one side of a structure , said imaging system comprising:at least one X-ray source;at least one rotating collimator coupled to the at least one X-ray source;an X-ray detector; anda controller coupled to said at least one X-ray source, said rotating collimator, and said X-ray detector, said controller is configured to:emit X-rays from said at least one X-ray source through said at least one rotating collimator towards the one side of the structure;detect backscattered X-rays from the one side of the structure, using said X-ray detector, at a plurality of depths within the structure; andgenerate three dimensional image data of the structure based on the detected backscattered X-rays.2. The imaging system of claim 1 , wherein said at least one X-ray source includes a first X-ray source and a second X-ray source claim 1 , said at least one rotating collimator includes a first rotating collimator coupled to said first X-ray source and a second rotating collimator coupled to said second X-ray source ...

X-RAY TUBE AND GAMMA SOURCE FOCAL SPOT TUNING APPARATUS AND METHOD

An apparatus () provides for tuning of an effective focal spot size of a radiation source. The apparatus may comprise a plurality of inter-channel structures () defining a plurality of channels () passing through the apparatus from a first surface () to a second surface (). The inter-channel structures comprise a first substance and the channels contains a second substance. The first substance attenuates radiation more than the second substance. The inter-channel structures may define the channels such that lines passing through the channels converge at a location on or near the surface of a focal spot (). 1. An apparatus for tuning an effective focal spot size of a radiation source , the apparatus comprising:a plurality of inter-channel structures defining a plurality of channels passing through the apparatus from a first surface to a second surface, the inter-channel structures comprising a first substance, the channels containing a second substance, the first substance attenuating radiation more than the second substance, the inter-channel structures defining the channels such that lines passing through the channels converge.2. The apparatus of claim 1 , wherein at least one of: the first surface is concave or the second surface is convex.3. The apparatus of claim 1 , wherein all of the channels are equal length.4. The apparatus of claim 1 , wherein the inter-channel structures define the channels such that diameters of the channels vary to compensate for non-uniformity of a focal spot of an electron beam.5. The apparatus of claim 1 , wherein claim 1 , for at least one of the channels claim 1 , the inter-channel structures define the channel such that a first segment of an inner surface of the channel is smoother than a second segment of the inner surface of the channel.6. The apparatus of claim 1 , wherein the inter-channel structures define openings of the channels at a first surface of the apparatus to be wider than openings of the channels at a second surface ...

X-RAY COLLIMATOR FOR IMAGING SYSTEM

A collimator includes a panel and one or more blades. The panel defines an exit port, and the one or more blades are held between the panel and an X-ray source to cover at least a portion of the exit port. Each of the one or more blades has a primary blocking member and a secondary blocking member with material densities sufficient to block X-ray radiation. The primary blocking member shapes an X-ray beam emitted from the X-ray source. The secondary blocking member is secured in a fixed position relative to the primary blocking member between the primary blocking member and the panel to block scatter radiation from the X-ray beam from emanating through the exit port. The primary blocking member has a substantially non-planar surface facing toward the X-ray source. The secondary blocking member has a substantially planar surface facing toward the X-ray source. 1. A collimator comprising:a panel defining an exit port through which an X-ray beam from an X-ray source emanates towards a detector; andone or more blades held between the panel and the X-ray source and covering at least a portion of the exit port, each of the one or more blades having a primary blocking member and a secondary blocking member with material densities sufficient to block X-ray radiation, the primary blocking member configured to shape the X-ray beam that is emanated through the exit port, the secondary blocking member secured in a fixed position relative to the primary blocking member between the primary blocking member and the panel to block scatter radiation from the X-ray beam from emanating through the exit port,wherein the primary blocking member has a substantially non-planar surface facing toward the X-ray source and the secondary blocking member has a substantially planar surface facing toward the X-ray source.2. The collimator of claim 1 , wherein each of the one or more blades includes a base that engages and holds both the primary blocking member and the secondary blocking member ...

MEDICAL IMAGING APPARATUS AND METHOD OF OPERATING SAME

A medical imaging apparatus is provided. The medical image apparatus includes an output unit; and a controller configured to control the output unit to display an image obtained by photographing an object and to display, over the image, a top indicator for setting a top limit for an area to be X-rayed and at least one guideline indicating a bottom limit for the area to be X-rayed according to the top indicator and the number of partial photographing operations. 1. A medical imaging apparatus comprising:an output device; anda controller configured to control the output device to display an image obtained by photographing an object and to display, over the image, a top indicator that relates to setting a top limit for an area to be X-rayed and at least one guideline that indicates a bottom limit for the area to be X-rayed based on the top indicator and a number of partial photographing operations.2. The medical imaging apparatus of claim 1 , further comprising an input device configured to receive a user input that relates to adjusting a position of the top indicator on the image claim 1 , andwherein the output device is configured to display at least one guideline that is changed based on the adjusted position of the top indicator.3. The medical imaging apparatus of claim 2 , wherein the input device is further configured to receive a user input that relates to setting a bottom limit for the area to be X-rayed.4. The medical imaging apparatus of claim 3 , wherein the controller is further configured to determine the number of partial photographing operations based on the bottom limit and to partition an area between the top indicator and the bottom limit in the image into regions for the partial photographing operations based on the determined number of partial photographing operations claim 3 , andwherein the output device is further configured to display the regions of the partial photographing operations on the image.5. The medical imaging apparatus of claim 4 , ...

TRAINING METHOD AND SYSTEM FOR COLLIMATOR BORDER DETECTION METHOD

A training method () and system for a collimator border detection method. The training method () comprises the following steps: obtaining an original image acquired by an X-ray imaging system and a processed image obtained after processing the original image (); determining on the basis of the processed image whether the processed image is a valid image (); and extracting coordinates of a collimator border of a valid processed image, putting into a training pool the extracted coordinates of the collimator border and the original image corresponding to the valid processed image, and when the number of valid original images in the training pool reaches a preset threshold value, starting the training of the collimator border detection method (). 1. A training method for a collimator border detection method , comprising the following steps:obtaining an original image acquired by an X-ray imaging system and a processed image obtained after processing the original image;determining whether the processed image is a valid image; andextracting coordinates of a collimator border of a valid processed image, putting into a training pool the extracted coordinates of the collimator border of the valid processed image and an original image corresponding to the valid processed image of which the coordinates of the collimator border are extracted, and when the number of valid original images in the training pool reaches a preset threshold, starting training of the collimator border detection method.2. The training method for a collimator border detection method according to claim 1 , further comprising using the extracted coordinates of the collimator border as criteria of the training method for a collimator border detection method.3. The training method for a collimator border detection method according to claim 1 , further comprising extracting features of a collimator edge of a valid original image claim 1 , and obtaining claim 1 , by a machine learning method claim 1 , a ...

System and method of x-ray radiation reduction

A system and method of reducing radiation exposure during an X-ray procedure comprising the steps of: inserting an automated collimation device onto an X-Ray machine; implementing infrared or ultrasonic measuring features into the collimation device; measuring the distance of the X-ray source to the anatomy of a patient; measuring the thickness of the anatomy of the patient; and automatically adjusting the distance and degree of radiation emission based upon the results of distance and thickness measurements.

Model-based Scatter Correction for Non-parallel-hole Collimators

Model-based scatter correction is used in SPECT with a non-parallel-hole collimator. Model-based scatter correction uses scatter kernels based on simulation to model the scatter for a given system and patient. For non-parallel-hole collimators, the measured sensitivity and measured vector maps are used in the modeling of scatter. The measured sensitivity is used to normalize the scatter kernels simulated for a parallel-hole collimator rather than attempting to simulate scatter with the complicated arrangement of holes. The measured vector maps are used to accurately project the model-based scatter sources into a data or emissions space. 1. A method for model-based scatter correction in a single photon emission computed tomography (SPECT) system , the method comprising:detecting, with a SPECT detector having a non-parallel-hole collimator, emissions from a patient;generating an image object from the emissions;forward projecting from the image object to a first data model in data space;forming a model-based scatter source from convolution of the image object with scatter kernels, the scatter kernels being kernels from a simulation of scatter with a parallel hole collimator normalized by sensitivity as a function of location measured for the non-parallel-hole collimator;determining a model of scatter from a vector map measured from the non-parallel-hole collimator and the model-based scatter source;combining the first data model with the model of scatter into a projection data model; anddisplaying a SPECT image of the patient as a function of the projection data model.2. The method of wherein detecting comprises detecting with the non-parallel-hole collimator being a multi-focal collimator with holes being more parallel along edges than inward from the center of the multi-focal collimator.3. The method of wherein generating the image object from the emissions claim 1 , forward projecting claim 1 , and combining are performed as part of iterative reconstruction claim 1 ...

CT FOCAL POINT DETERMINATION METHOD AND SYSTEM

A method for determining a CT focal point includes determining a first intensity of first radiation incident on a first detector unit of a scanner, wherein the scanner may include a non-uniform anti-scatter grid (ASG) and a radiation source, and the non-uniform ASG may be configured according to a first focal point of the radiation source. The method also includes determining a second intensity of second radiation incident on a second detector unit of the scanner, wherein the first radiation and the second radiation are emitted from the radiation source with a second focal point. The method further includes determining a displacement of the second focal point from the first focal point based on the first intensity and the second intensity. 1. A method , comprising:determining a first intensity of first radiation incident on a first detector unit of a scanner, the scanner including a non-uniform anti-scatter grid (ASG) and a radiation source, the non-uniform ASG being configured according to a first focal point of the radiation source;determining a second intensity of second radiation incident on a second detector unit of the scanner, wherein the first radiation and the second radiation are emitted from the radiation source with a second focal point; anddetermining a displacement of the second focal point from the first focal point based on the first intensity and the second intensity.2. (canceled)3. The method of claim 1 , wherein the determining the displacement comprises:determining a ratio of the first intensity to the second intensity; anddetermining the displacement based on the ratio.4. The method of claim 3 , further comprising:determining a correlation between the displacement and the ratio using a pinhole positioned between the radiation source and a detector of the scanner, the detector including the first detector unit and the second detector unit, wherein the displacement is determined further based on the correlation.5. The method of claim 1 , further ...

Computerized tomography (ct) imaging system with multi-slit rotatable collimator

Apparatus for collimating an X-ray beam, the apparatus comprising: a multi-slit rotatable collimator comprising: a semi-tubular structure extending coaxially along a longitudinal axis, the semi-tubular structure being formed out of an X-ray impermeable material; at least one slit formed in the semi-tubular structure, wherein the at least one slit extends parallel to the longitudinal axis of the semi-tubular structure; a mount for rotatably supporting the semi-tubular structure in the path of an X-ray beam; and a drive mechanism for selectively rotating the semi-tubular structure about the longitudinal axis of the semi-tubular structure, whereby to selectively (i) position the at least one slit in the path of the X-ray beam so as to tailor the X-ray beam to the width of the at least one slit, and (ii) position a solid portion of the semi-tubular structure in the path of an X-ray beam so as to block an X-ray beam.

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM

There is provided an image processing apparatus including a processing unit configured to superimpose a plurality of X-ray images that are based on X-ray detection data representing detection results obtained by detecting a plurality of times in a time-division manner parallel beam X-rays output from a ray source including a plurality of X-ray sources that output parallel beam X-rays. 1. An image processing apparatus comprising:a processing unit configured to superimpose a plurality of X-ray images that are based on X-ray detection data representing detection results obtained by detecting a plurality of times in a time-division manner parallel beam X-rays output from a ray source including a plurality of X-ray sources that output parallel beam X-rays.2. The image processing apparatus according to claim 1 , correct an X-ray intensity of the plurality of X-ray images based on a plurality of calibration images that are based on the X-ray detection data representing each detection result in a state in which a target is not present, and', 'superimpose the plurality of corrected X-ray images., 'wherein the processing unit is configured to'}3. The image processing apparatus according to claim 2 ,wherein the processing unit is further configured to correct the X-ray intensity of the plurality of X-ray images based on an offset image that is based on the X-ray detection data in a state in which a target is not present, and a state in which X-rays have not been output.4. The image processing apparatus according to claim 1 , correct, based on a detection result of positional deviation among the plurality of X-ray images, the positional deviation among the detected X-ray images, and', 'superimpose the plurality of X-ray images in which the positional deviation has been corrected., 'wherein the processing unit is configured to'}5. The image processing apparatus according to claim 4 , correct positional deviation of a plurality of calibration images that are based on the X-ray ...

SYSTEM FOR ADJUSTING THE ENERGY LEVEL OF A PROTON BEAM PROVIDED BY A CYCLOTRON, A CYCLOTRON TARGET HOLDER ASSEMBLY WITH A REMOVABLE DEGRADER, A REMOVABLE DEGRADER FOR USE IN A CYCLOTRON TARGET HOLDER ASSEMBLY, AND METHODS OF USE THEREOF

A system for adjusting the energy level of a proton beam provided by a cyclotron includes the cyclotron and a target holder assembly including a removable degrader. The removable degrader can be removed and/or replaced without removal of the target holder assembly from the cyclotron. A method for adjusting an energy level of a proton beam of a cyclotron includes providing a target holder assembly with a removable degrader in the path of the proton beam of the cyclotron to reduce the energy level of the proton beam, where the removable degrader can be removed from the path of the proton beam without removal of the target holder assembly from the cyclotron. 1. An assembly for a fixed-energy cyclotron , wherein the cyclotron is configured to produce a particle beam , the assembly comprising: a first region configured to hold a target material;', 'a second region with a receiving slot; and', 'a third region including a receiving section for receiving the particle beam from the cyclotron; and, 'a target holder assembly comprising a target body that includesa removable degrader comprising an attenuation disc; the receiving slot is configured to receive the removable degrader;', 'the removable degrader is configured for removable insertion into the receiving slot such that, when (a) the removable degrader is in the receiving slot, (b) the target material is held in the first region of the target body, and (c) the particle beam travels into the receiving section, the attenuation disc is positioned in a path of the particle beam that extends from the receiving section to the target material; and', 'the attenuation disc is configured to reduce an energy level of the particle beam prior to the particle beam reaching the target material., 'wherein2. The assembly of claim 1 , wherein the target holder assembly and the removable degrader are configured to allow for removal of the removable degrader without removal of the target holder assembly from the cyclotron.3. The assembly ...

APPARATUS AND METHOD FOR INSPECTING INTEGRITY OF A MULTI-BARRIER WELLBORE

An apparatus for inspecting integrity of a multi-barrier wellbore is described. The apparatus includes at least one source to generate radiation to impinge a target volume of the wellbore. The apparatus includes a source collimator having a plurality of alternating blocking channels and passing channels to direct radiation to impinge the target volume, such that the radiation directed from each passing channel forms a plurality of field of views extending radially into the target volume. The apparatus further includes at least one detector to receive backscatter rays arising from each respective field of view from the plurality of field of views and to generate an image representative of an inspected portion of the wellbore. The apparatus is useful for inspecting very small volumes in the multiple barriers of the wellbore and determine the integrity of the wellbore based on the different densities in the image of the inspected portion. 1. An apparatus for inspecting integrity of a multi-barrier wellbore , the apparatus comprising:at least one source to generate radiation to impinge a target volume of the wellbore;a source collimator having a plurality of alternating blocking channels and passing channels to direct radiation to impinge the target volume, wherein radiation directed from each passing channel forms a plurality of field of views extending radially into the target volume; andat least one detector to receive backscatter rays arising from each respective field of view from the plurality of field of views and to generate an image representative of an inspected portion of the wellbore.2. The apparatus of wherein the target volume is across multiple barriers claim 1 , wherein the multiple barriers comprise at least a metal layer surrounded by a cement layer.3. The apparatus of wherein each passing channel has an angular width defined by a first angle.4. The apparatus of further comprising at least two sources associated with respective source collimators and ...

X-ray detector, collimator, ct apparatus and method for the same

An X-ray detector, a collimator, a CT apparatus and a method thereof are provided. The X-ray detector comprises a plurality of detector modules which are arranged in an array along a slice direction and a signal channel direction being orthogonal to each other, the array at least comprising a left detection area, a central detection area and a right detection area that are contiguous in the signal channel direction, wherein, in the slice direction, coverage of the left detection area and coverage of the right detection area are complementary and sum of these two coverages is equal to coverage of the central detection area. The collimator comprises a pair of moving shield plates and a fixing shield plate, wherein shape of a window in the fixing shield plate is the same as shape of the array. The CT apparatus comprises the X-ray detector and the collimator.

CT COLLIMATOR AND CT SYSTEM INCLUDING THE CT COLLIMATOR

A CT collimator comprising a rotating slot part on a rotation shaft and having a plurality of blades, each blade has a slot of a different width and a radiation beam entering the collimator can only pass via a slot in one of the blades, each edge of each blade slot along a longitudinal direction has a convex curved surface structure, and in a vertical plane along a longitudinal direction, two side edges of the slot are curved, and each blade is arranged to be eccentric to the center of the rotation shaft. A CT system using the CT collimator, the detection area of the radiation rays projected to the radiation detector via the CT collimator can be maintained unchanged by adjusting the rotation angle of the blade, under the circumstance where the focus of the radiation source shifts during a CT scan. 1. A CT collimator , comprising:a rotating slot part disposed on a rotation shaft and comprising a plurality of blades,wherein each blade comprises a slot of a different width and a radiation beam entering the collimator can only pass via a slot in one of the plurality of blades,wherein each edge of each slot along a longitudinal direction of the corresponding blade comprises a convex curved surface structure, and in a vertical plane along a longitudinal direction of the slot, two side edges of the slot are curved, andwherein each blade is arranged to be eccentric to a center of the rotation shaft.2. The CT collimator as claimed in claim 1 , further comprising:a single motor configured to drive the rotating slot part to rotate around the rotation shaft; andan encoder configured to monitor an angle of rotation of the rotating slot part around the center of the rotation shaft.3. The CT collimator as claimed in claim 1 , further comprising:a single motor configured to drive the rotating slot part to rotate around the rotation shaft,wherein the single motor comprises an encoder configured to monitor an angle of rotation of the rotating slot part around the center of the ...

COLLIMATOR AND CT SYSTEM COMPRISING THE SAME

A CT collimator comprising: a first gate and a second gate arranged in parallel on a slide rail, the first gate being fixed to a support rack of the CT collimator via elastic members; an electromagnet system arranged on one of the first gate and the second gate; and a metal plate arranged on the other side of the one of the first gate and the second gate relative to the electromagnet system, one end of the metal plate being fixed on the other of the first gate and the second gate and the other end of the metal plate extending to below the electromagnet system, wherein the electromagnet system is configured to engage the first gate and the second gate via the metal plate when the electromagnet system is triggered. 1. A CT collimator , comprising:a first gate and a second gate arranged in parallel on a slide rail, the first gate being fixed to a support rack of the CT collimator via elastic members;electromagnet system arranged on a side of one of the first gate and the second gate; anda metal plate arranged on another side of the one of the first gate and the second gate relative to the electromagnet system, an end of the metal plate being fixed on the other of the first gate and the second gate and another end of the metal plate extending to below the electromagnet system,wherein the electromagnet system is configured to engage the first gate and the second gate via the metal plate when the electromagnet system is triggered.2. The CT collimator as claimed in claim 1 , further comprising:a single-motor drive system fur driving the second gate to move on the slide rail via an actuator.3. The CT collimator as claimed in claim 1 , wherein the metal plate is a steel plate or non-metal magnetic material claim 1 , and the metal plate has a length capable of extending to below the electromagnet system when a maximum aperture is formed between the first gate and the second gate.4. The CT collimator as claimed in claim 1 , wherein the electromagnet system comprises an ...

X-RAY DIAGNOSTIC APPARATUS

According to one embodiment, an image generation unit generates a first image during a large aperture period and a second image during a small aperture period. An image combining unit generates a composite image based on the latest second image and the specific first image. A display unit displays the composite image in real time. A determination unit determines whether to update the first image based on an index associated with the anatomical positional shift between the first image and the second image. A driving control unit enlarges a aperture to the large aperture, when the determination unit determines to update, and maintains the aperture at the small aperture, when the determination unit determines not to update. 1. (canceled)2. An X ray diagnostic apparatus comprising:an X ray tube configured to generate X rays;an X ray detector configured to detect X rays generated from the X ray tube and transmitted through a subject;an aperture variable collimator mechanism configured to limit a radiation field of X rays from the X ray tube;an image generation unit configured to repeatedly generate a first X ray image based on an output from the X ray detector during a period in which an aperture of the collimator mechanism is a first aperture size and to repeatedly generate a second X ray image based on an output from the X ray detector during a period in which the aperture is a second aperture size smaller than the first aperture size;a display unit configured to display a latest second X ray image of the repeatedly generated second X ray images and a specific first X ray image of the repeatedly generated first X ray images as a dynamic image in real time for the second X ray image is generated;an input unit configured to switch between an ON state and OFF state of an ROI fluoroscopy mode; anda control unit configured to enlarge the aperture of the collimator mechanism from the second aperture size to the first aperture size by controlling the collimator mechanism ...

COORDINATED MOTION OF A ROTATING 2D X-RAY IMAGER AND A LINEAR ACCELERATOR

A method of and apparatus for operating a radiation treatment delivery system. The method includes generating, by a processing device, a set of instructions for a volumetric imager based on a set of directionalities for a radiation beam of a linear accelerator (LINAC) to avoid a collision between the volumetric imager and the LINAC, wherein the set of instructions comprises physical locations of the volumetric imager and timing values corresponding to the physical locations. The method further includes operating the volumetric imager during the radiation treatment delivery according to the set of instructions. 1. A method of operating a radiation treatment delivery system , comprising:generating, by a processing device, a set of instructions for a volumetric imager based on a set of directionalities for a radiation beam of a linear accelerator (LINAC) to avoid a collision between the volumetric imager and the LINAC, wherein the set of instructions comprises physical locations of the volumetric imager and timing values corresponding to the physical locations; andoperating the volumetric imager during the radiation treatment delivery according to the set of instructions.2. The method of claim 1 , wherein generating the set of instructions for the volumetric imager is further based on a treatment time constraint.3. The method of claim 1 , wherein generating the set of instructions for the volumetric imager is further to avoid an intersection between the volumetric imager and the radiation beam.4. The method of claim 1 , further comprising optimizing the set of instructions for the volumetric imager based on a minimum motion time of the radiation treatment delivery.5. The method of claim 1 , further comprising optimizing the set of instructions for the volumetric imager based on minimum volumetric imager movement during radiation treatment delivery.6. The method of claim 1 , further comprising optimizing the set of instructions for the volumetric imager based on ...

NEUTRAL ATOM IMAGING UNIT, NEUTRAL ATOM IMAGER, NEUTRAL ATOM IMAGING METHOD, AND SPACE DETECTION SYSTEM

The present disclosure provides a neutral atom imaging unit, a neutral atom imager, a neutral atom imaging method, and a space detection system. The neutral atom imaging unit includes at least one set of detection units, the at least one set of detection units includes: at least one semiconductor detector line array, each semiconductor detector line array includes a semiconductor detector strip composed of a plurality of semiconductor detectors; and at least one modulation grid. The modulation grid includes a slit and a slat forming the slit; the modulation grid includes a plurality of grid periods, each of the grid periods includes n slits, the width of the semiconductor detector strip is d, and the width (w) of the i-th slit of the modulation grid satisfies the following relationship: 2. The neutral atom imaging unit according to claim 1 , wherein in each of the grid periods claim 1 , a width of a narrowest slit and a width of the slat forming the narrowest slit are the same as a width of the semiconductor detector strip.3. The neutral atom imaging unit according to claim 1 , wherein lengths of the plurality of grid periods of the modulation grid are the same claim 1 , the i-th slit in each grid period corresponds to an i-th slat claim 1 , and the i-th slit has the same width as the i-th slat.4. The neutral atom imaging unit according to claim 1 , wherein a thickness t of the modulation grid satisfies: t≤¼d.6. The neutral atom imaging unit according to claim 1 , wherein the modulation grid includes m grid periods claim 1 , m≥2 and n≥8.7. The neutral atom imaging unit according to claim 1 , wherein the neutral atom imaging unit further comprises a collimation-and-deflection module claim 1 , the collimation-and-deflection module is arranged in front of a modulation grid of at least one detection unit claim 1 , and the collimation-and-deflection module includes a collimator and a deflection plate.8. A neutral atom imager claim 1 , comprising at least one imaging ...

METHOD FOR PRODUCING A BEAM GUIDE GRID AND A BEAM GUIDE GRID PRODUCED IN ACCORDANCE WITH THE METHOD

The invention relates to a process for producing a beam guiding grid (), comprising a molding having a grid of passageways () and wall areas surrounding them, from radiation-absorbing metal powder and binder, especially tungsten powder and binder. Advantageous production is achieved in that the molding is produced by injection molding, wherein the homogenized mixture, as a prepared flowable injection compound, is injected using an injection molding machine into a molding tool () that produces the molding, into which movable mold cores () were introduced prior to filing with the molding composition. 1440. A process for producing a beam guiding grid () , consisting of a molding , provided with a grid of passageways () and wall areas surrounding these , from a mixture of radiation-absorbing metal powder and binder , especially tungsten powder and binder ,characterized in that{'b': 7', '72, 'the molding is produced by injection molding, wherein the homogenized mixture is filled, as a flowable prepared injection compound, using an injection machine into a molding tool () forming the molding, into which movable mold cores () were introduced before the injection compound was filled in.'}2. The process according to claim 1 ,characterized in thatthe binder used for the injection process is a preheated and plasticized thermoplastic or duroplastic material.3. The process according to claim 2 ,characterized in thata polyether ketone, especially polyether ether ketone (PEEK), is used as the thermoplastic.4. The process according to claim 1 ,characterized in thatthe ratio of metal powder, especially tungsten powder, to binder in volume-percent is in the range of 30/70 to 98/2.5. The process according to claim 1 ,characterized in that{'b': 40', '72', '40', '7', '8', '40, 'during the molding, to make the axes of the passageways () align at an acute angle to one another toward a common focal point—the mold cores () in the molding tool are arranged and shaped according to the ...

METHOD FOR MANUFACTURING A COLLIMATOR MODULE AND METHOD FOR MANUFACTURING A COLLIMATOR BRIDGE AS WELL AS COLLIMATOR MODULE, COLLIMATOR BRIDGE, COLLIMATOR AND TOMOGRAPHY DEVICE

A method for manufacturing a collimator module and/or a collimator bridge is disclosed, as well as a collimator module, a collimator bridge, a collimator and a tomography device. A collimator module for a radiation detector includes a plurality of collimator layers. These collimator layers each have a flat lattice structure. In an embodiment, a first collimator layer has a holder structure and the collimator layers are aligned relative to one another by the holder structure on a first holder tool. With such a holder structure it is possible to glue the aligned collimator layers to one another such that the glued collimator layers form the collimator module with absorber walls disposed in a lattice shape. In such cases, the collimator layers can be aligned to one another in an especially simple and yet precise manner. Through this the actual lattice shape corresponds especially accurately to a prespecified lattice shape. 1. A method for manufacturing a collimator module for a radiation detector , the collimator module including collimator layers , each collimator layer including a flat lattice structure , the method comprising:preparing the collimator layers to include a first collimator layer with a holder structure;aligning the collimator layers by the holder structure on a first holder tool; andgluing the aligned collimator layers to one another such that the glued collimator layers form the collimator module with absorber walls disposed in a lattice shape.2. The method of claim 1 , wherein the collimator layers are aligned and glued such that the surfaces of the absorber walls are embodied flat.3. The method of claim 1 , wherein the holder structure extends beyond the lattice structure.4. The method of claim 1 , wherein the holder structure claim 1 , after the gluing of the collimator module claim 1 , is at least partly separated.5. A method for manufacturing a collimator bridge including at least one first collimator module manufactured in accordance with the ...

X-RAY COLLIMATOR

An x-ray collimator that may include a substrate containing a plurality of holes, each hole being frustoconical at one end and tubular at the other end for use in an x-ray imaging system, whereby the x-ray collimator may be aligned with a two-dimensional array of x-ray sources and a two-dimensional x-ray sensor, and whereby x-ray photons from the x-ray sources may pass through the collimator holes and emerge as a beam of x-ray photons in a narrow angle cone which may pass through a subject being imaged, positioned between the output holes of the collimator and the x-ray sensor. 121-. (canceled)22. An x-ray collimator , comprising:a substrate containing a plurality of holes, wherein at least some of the holes have a tapered entrance and a following tubular portion along their axial lengths, wherein the tapered entrances are frustoconical, and wherein each of the at least some holes are capable of emitting a beam of x-ray photons in a narrow angle cone when in use with a source of x-rays located at the tapered entrances.23. The x-ray collimator of claim 22 , wherein the plurality of holes are arranged in a two dimensional array.24. The x-ray collimator of claim 22 , wherein the substrate is made from silicon or a glass.25. The x-ray collimator of claim 24 , wherein the glass is made from fused silica.26. The x-ray collimator of claim 22 , wherein the tapered entrances comprise an approximate parabolic shape.27. The x-ray collimator of claim 26 , wherein the parabolic shape comprises an approximate “Winston Cone” shape.28. The x-ray collimator of claim 22 , wherein the tubular portion is cylindrical.29. The x-ray collimator of claim 22 , wherein the distance between the entrance hole of the tapered entrance and the output hole of the tubular portion is substantially greater than the diameter of the output hole.30. The x-ray collimator of claim 22 , wherein the distance between the entrance hole of the tapered entrance and the output hole of the tubular portion is at ...

COMPUTED TOMOGRAPHY DEVICE BASED ON STRAIGHT TRAJECTORY AND X-RAY IMAGING DEVICE

A straight trajectory CT device can be used in radiation imaging. The device includes: a ray-generating unit that generates a ray within a specific range of field angle; a channel for an object to be inspected though which the object to be inspected passes; a first collimator; and a ray receiving unit provided on both sides of the channel for the object to be inspected. The ray beam is received by the ray receiving unit after penetrating the first collimator and the object to be inspected in order. The ray generating unit is static and the first collimator moves in the same direction as the ray receiving unit. This direction is parallel to the channel for the object to be inspected. The device can complete computed tomography with a minimum of one ray receiving unit, thereby simplifying the structure of the device and reducing its cost. 2. The CT device according to claim 1 , wherein at least one first collimating slits through which the ray beam passes are provided on the first collimator claim 1 ,the first collimating slit is located within the range of field angle, andthe boundary of first collimator is beyond the range of the field angle.3. The CT device according to claim 2 , wherein the number of the first collimating slits is n; when n equals to 1 claim 2 , the maximum stroke of the unidirectional movement of the first collimating slit at a time is s; when n is larger than 1 claim 2 , the distance between the centers of adjacent first collimators equals to s/n.4. The CT device according to claim 2 , wherein the number of the ray receiving units is equal to the number of the first collimating slits claim 2 , and each ray receiving unit corresponds to one of the first collimating slits.5. The CT device according to claim 4 , wherein the ray receiving unit comprises the third collimator provided with the third collimating silt and a detector receiving the ray beam that penetrates the third collimator.6. The CT device according to claim 1 , wherein the ray ...

X-RAY IMAGING DEVICE INCLUDING ANTI-SCATTER GRID

An x-ray imaging device includes an anti-scatter grid placed inside the housing of the imaging device and adjacent to an x-ray detector. 1. An x-ray imaging device , comprising:a housing;an x-ray detector placed inside the housing; andan anti-scatter grid placed inside the housing adjacent to the x-ray detector.2. The x-ray imaging device of wherein the housing comprises a cover plate claim 1 , and the imaging device further comprises a compressible body between the cover plate and the x-ray detector.3. The x-ray imaging device of wherein the compressible body comprises compression foam.4. The x-ray imaging device of wherein the compression foam comprises a first piece and a second piece claim 3 , and the anti-scatter grid is sandwiched between the first and second pieces.5. The x-ray imaging device of wherein the first piece of the compression foam is in between the cover plate of the housing and the anti-scatter grid claim 4 , and the second piece of the compression foam is in between the anti-scatter grid and the x-ray detector claim 4 , and the second piece of the compression foam is thinner than the first piece of the foam.6. The x-ray imaging device of wherein the compression foam is provided with a slot forming the first and second pieces and the anti-scatter grid is received and held in the slot.7. The x-ray imaging device of wherein the anti-scatter grid is attached to the housing by an attachment member.8. The x-ray imaging device of wherein the x-ray detector comprises a digital flat panel detector comprising a scintillator layer configured to convert x-ray photons to visible light.9. The x-ray imaging device of wherein the x-ray detector comprises a digital flat panel detector comprising a photoconductor layer configured to convert x-ray photons to electron-hole charges.10. The x-ray imaging device of wherein the anti-scatter grid is distanced from the x-ray detector about 1-15 mm.11. The x-ray imaging device of wherein the anti-scatter grid is distanced ...

Alignment system

Disclosed is an alignment indication system for an X-ray to align a sensor with X-rays emitted from a collimator that includes a conductive surface and two contacts that abut the conductive surface when an alignment ring holding the sensor is properly aligned with the collimator to activate an indicator such as a light when the sensor is properly aligned.

Manufacturing a collimator element

A method is disclosed for manufacturing a collimator element. The method includes applying a lithographic coating layer. The lithographic coating layer is then exposed using a grid mask. Exposure regions then correspond to a structure of the collimator element. Here, the structure of the collimator element is aligned on a common focus. The lithographic coating layer is then developed to give a pre-structure of the collimator element. Further, an X-ray absorbing layer is applied via cathode sputtering. At least the X-ray absorbing layer is then removed from regions of the pre-structure. A collimator element, a method for manufacturing a scattered-radiation collimator, a scattered-radiation collimator, a radiation detector and a CT device are also disclosed.

CREATING TREATMENT FIELD USING INITIAL FIELD AND PATIENT SPECIFIC GEOMETRY AND ACHIEVABLE DOSE

Methods and systems are provided for developing radiation therapy treatment plans. A treatment template with radiation fields can be chosen for a patient based on a tumor location. Static radiation field positions can be adjusted for the patient, while arc radiation fields may remain the same. Static radiation field positions can be adjusted using dose gradient, historical patient data, and other techniques. 1. A method for determining a radiation treatment plan for controlling a radiation treatment system to provide radiation to a patient , the method comprising performing by the computer system:receiving one or more images associated with the patient;identifying a target area within the patient based on the one or more images; an arc field with an arc field pathway such that the radiation treatment system provides radiation to the target area while a gantry of the radiation treatment system is moving along the arc field pathway, and', 'a static field such that the radiation treatment system provides radiation to the target area while the gantry is stationary, the static field having a position at an initial position value;, 'receiving a selection of a radiation treatment template, wherein the radiation treatment template includesobtaining a cost function that outputs a quality score that varies with position values of the static field;optimizing the position of the static field by changing the position of the static field and identifying an optimal position value having an optimal quality score, wherein the position of the static field is constrained to be located within a predefined distance of the initial position value; andgenerating a radiation treatment plan using the arc field with the arc field pathway and the static field having the optimal position value, the radiation treatment plan including specifications for providing radiation with the radiation treatment system to the patient over time, along the arc field pathway and at the optimal position value.2 ...

X-RAY BEAM SHAPER

An imaging system () includes a focal spot () that rotates along a path around an examination region and emits a radiation beam that traverses a field of view of the examination region and a subject or object therein. The system further includes a detector array () that is located opposite the radiation source, across the examination region. The detector array detects radiation traversing the field of view and outputs a signal indicative of the detected radiation. The system further includes a beam shaper that is located between the radiation source and the examination region. The beam shaper rotates with the focal spot and, relative to the focal spot, in an opposite direction of the focal spot with a same angular frequency as the rotating of the focal spot and attenuates the radiation beam which reduces a flux density across the detector array at each rotational angle of the focal spot. 1. An imaging system , comprising:a focal spot configured to rotate along a path around an examination region and emit a radiation beam that traverses a field of view of the examination;a detector array located opposite the radiation source and across the examination region, the detector array configured to detect radiation traversing the field of view and output a signal indicative of the detected radiation; anda beam shaper located between the radiation source and the examination region, the beam shaper configured to rotate with the focal spot and, relative to the focal spot, in an opposite direction of the focal spot with a same angular frequency as the rotating of the focal spot and attenuate the radiation beam which reduces a flux density across the detector array at each rotational angle of the focal spot.2. The imaging system of claim 1 , further comprising:a filter located between the focal spot and the beam shaper, wherein the filter attenuates the beam so that an intensity of the beam at each pixel is approximately the same.3. The imaging system of claim 2 , wherein the ...

SYSTEMS AND METHODS FOR THREE-DIMENSIONAL IMAGING

Disclosed herein is a method of imaging a tracer in a body region of an organism, the body region comprising L imaging regions (imaging regions (i), i=1, . . . ,L), wherein L is an integer greater than 1, the method comprising: for i=1, . . . ,L, causing the tracer in essentially only the imaging region (i) to emit characteristic X-ray photons (i); for i=1, . . . ,L, capturing a region image (i) of the tracer in essentially only the imaging region (i) with the characteristic X-ray photons (i); and determining a three-dimensional (3D) distribution of the tracer in the body region based on the region images (i), i=1, . . . ,L.

IMAGE CAPTURE METHOD AND APPARATUS

The present apparatus, system, and method relate to reliably capturing multiple x-ray images for later combination. An exposure shield blocks a portion of the x-rays emitted from a traditional emitter and collimator. The orientation of exposure shield may then be modified to block a second portion of x-rays while ensuring appropriate overlap of the captured images without intentionally moving the emitter or collimator and without the need for a patient to wear protective garb.

SYSTEMS AND METHODS FOR REDUCED SIZE DETECTOR ELECTRONICS

A radiation detector processing assembly is provided including at least one application specific integrated circuit (ASIC). The radiation detector processing assembly includes plural input channels, a common readout, and a readout channel. Each input channel is configured to receive an input corresponding to a detection event from a pixel of a pixelated detector. The common readout is operably coupled to the plural input channels, and is configured to receive a corresponding output signal from each input channel. Each corresponding output signal has a unique address identifying the corresponding input channel. The readout channel is configured to receive a corresponding readout output from the common readout. The readout output includes output signals from a corresponding group of input channels. 1. A radiation detector processing assembly comprising at least one application specific integrated circuit (ASIC) , the radiation detector processing assembly comprising:plural input channels, each input channel configured to receive an input corresponding to a detection event from a pixel of a pixelated detector;a common readout operably coupled to the plural input channels, the common readout configured to receive a corresponding output signal from each input channel, each corresponding output signal having a unique address identifying the corresponding input channel; anda readout channel configured to receive a corresponding readout output from the common readout, the readout output comprising output signals from a corresponding group of input channels.2. The radiation detector processing assembly of claim 1 , further comprising plural readout channels configured to receive corresponding readout outputs comprising output signals from corresponding groups of input channels.3. The radiation detector processing assembly of claim 1 , further comprising at least one track and hold circuit portion shared by the corresponding group of input channels providing output signals to ...

X-RAY GENERATING APPARATUS AND X-RAY FLUOROSCOPYIMAGING SYSTEM EQUIPPED WITH THE SAME

The present invention provides an X-ray generating apparatus and an X-ray fluoroscopy imaging system comprising the same. The X-ray generating apparatus comprises: an electron accelerator, an electron emission unit, and a target; and a shielding and collimating device, including a shielding structure and multiple collimators arranged in the shielding structure, wherein the collimators are thin gaps extending from the target to an exterior surface of the shielding structure and having an axis transverse an electron beam shooting the target, and at least two collimators forming different angles with the electron beam are arranged on the same side of a plane contains the electron beam shooting the target, and the planes where the collimators locate form angles from 30 degrees to 150 degrees with the electron beam shooting the target, to draw out planar beams having different draw-out angles, each having uniform intensity distribution in its respective plane. 1. An X-ray generating apparatus , comprising:an electron accelerator including an electron acceleration unit, an electron emission unit, and a target; anda shielding and collimating device, including a shielding structure and multiple collimators arranged in the shielding structure,wherein the target is surrounded by the shielding structure,the collimators are thin gaps extending from the target to an exterior surface of the shielding structure and having an axis transverse an electron beam shooting the target, and at least two collimators forming different angles with the electron beam are arranged on the same side of a plane contains the electron beam shooting the target, andthe planes where the collimators locate form angles from 30 degrees to 150 degrees with the electron beam shooting the target, to draw out planar beams having different draw-out angles, each having uniform intensity distribution in its respective plane, wherein the planar beams have energy difference therebetween.2. The X-ray generating ...