ИРИДИЕВЫЙ ИСТОЧНИК НИЗКОЙ ПЛОТНОСТИ

Изобретение относится к источнику гамма-излучения, содержащему обладающие низкой плотностью сплавы или соединения или композиты иридия в механически деформируемых и сжимаемых конфигурациях, в герметизированной оболочке. Радиологический или радиографический источник излучения выполнен с механически вдавливаемой, сжимаемой несплошной конфигурацией из сплава или смеси иридия, марганца и элемента, выбранного из группы, состоящей из алюминия, меди и их смесей; или сплава или смеси иридия и иттрия. Техническим результатом является создание деформируемых источников излучения низкой плотности на основе иридия. 19 з.п. ф-лы, 8 ил.

Patientenbestrahlungseinrichtung

Patientenbestrahlungseinrichtung umfassend eine Patientenpositioniervorrichtung (3), eine Strahlenquelle (2) und eine Bildgebungseinrichtung (4), wobei die Patientenpositioniervorrichtung (3) mindestens eine Patientenaufnahme (5, 6) umfasst, wobei die Patientenpositioniervorrichtung (3) zumindest zur Ausführung einer horizontalen Bewegung der Patientenaufnahme (5, 6) ausgebildet ist, wobei die Bildgebungseinrichtung (4) eine Abbildungseinheit (24) zur Erzeugung eines Bilds in einer Abbildungsebene (25) aufweist und wobei die Bildgebungseinrichtung (4) eine erste Linearbewegungseinrichtung (20) zur Bewegung der Abbildungseinheit (24) entlang einer vertikalen Bewegungsachse (21) aufweist, dadurch gekennzeichnet, dass die Abbildungseinheit (24) um eine horizontal angeordnete Rotationsachse (22) drehbar ist.

Radiation imaging system

X-ray imaging at low contrast agent concentrations and/or low dose radiation

The present invention relates to X-ray examinations and to the improvement of patient safety during such. More specifically the invention relates to X-ray diagnostic compositions having ultra-low concentrations of iodine. The invention further relates to methods of X-ray examinations wherein a body is administered with an X-ray diagnostic composition and irradiated with a reduced radiation dose.

DETECTOR ASSEMBLIES AND METHODS FOR HELICAL CT SCANNING

A helical CT scanner for imaging an object is provided. The helical CT scanner includes an X-ray emitter configured to emit X-ray beams towards the object, and a detector array positioned opposite the X-ray emitter, the detector array including a plurality of discrete detector blocks arranged in a two-dimensional grid, each detector block including a plurality of pixels, wherein at least one first gap is defined between adjacent detector blocks in a first direction, and wherein at least one second gap is defined between adjacent detector blocks in a second direction. The helical CT scanner further includes a processing device communicatively coupled to said detector array, said processing device configured to reconstruct an image of the object based on image data acquired using said detector array.

MR GAMMA HYBRID IMAGING SYSTEM

A pendant breast imaging system that operates with a MRI system and which allows a planar gamma camera breast imaging system to be positioned away from the breast area while MRI imaging is occurring, and which then moves into breast imaging position after MRI imaging is complete, and which can again be removed from the breast area to allow intervention to occur is described. It may use various collimator or scintillator materials and designs.

PORTABLE CARBON NANOTUBE AND FILAMENT TYPE X-RAY DEVICE

The present invention relates to a portable carbon nanotube and filament type X-ray device. According to the present invention, the portable carbon nanotube and filament type X-ray device includes: a control unit controlling the portable carbon nanotube and filament type X-ray device; and a high pressure device of an X-ray source, which is connected to the control unit and is applied with a carbon nano tube (CNT), wherein the high pressure device of the X-ray source enables low does exposure by detailed control and remarkably reduces power consumption by not having a filament. The high pressure device of the X-ray source has a high pressure capacitor and a high pressure diode of a sandwich structure to have a compact structure. The portable carbon nanotube and filament type X-ray device improves image quality of the X-ray device used for a dental clinic and guarantees longevity. The portable carbon nanotube and filament type X-ray device provides low power consumption and enables a product ...

X-ray device to reduce the weight and Radiation Exposure

X-RAY PHOTOGRAPHING APPARATUS AND METHOD

The present invention relates to an X-ray photographing apparatus and a photographing method through the same. The X-ray photographing apparatus according to the present invention includes: a generator unit for generating X-rays; a sensor unit for collecting the generated X-rays; and a control unit for controlling the generator unit or the sensor unit with a second active area according to a second mode to operate according to a trajectory determined through the analysis of a first photographed image generated by the sensor unit with a first active area according to a first mode. According to the present invention, a physical form of a part to be photographed is recognized by using the photographed X-ray image and the physical form is used in the X-ray photographing method again, thereby obtaining a clear x-ray image. COPYRIGHT KIPO 2018 (130) Control unit ...

Method and arrangement for generating a jet of fluid, method and system for transforming the jet into plasma, and uses of said system

Method, system, and light source for penetrating radiation imaging

The present invention relates to method, system, and light source for penetrating radiation imaging, especially for X-ray imaging. The present invention provides a system for X-ray phase contrast and high resolution imaging. The system comprises: an X-ray source including a plurality of X-ray micro sources; an X-ray detector for receiving X-ray passing through the imaged object; and a computer for receiving the raw imaging data from the X-ray detector as well as for computing the raw imaging data to obtain a clear image of the imaged object.

X-RAY PHOTOGRAPHY SYSTEM

Provided is an x-ray photography system whereby shortening of task time when adjusting an initial value is possible. An x-ray system of an embodiment comprises an x-ray tube control unit, an initial value computation unit, and a storage unit. The x-ray tube control unit controls a filament current which flows through an x-ray tube filament such that a tube current which fluctuates at activation flows stably at a desired value. The initial value computation unit derives an initial value of the filament current which will be used at the next activation, on the basis of a stable value of the filament current when the tube current flows stably and a photographic condition at said time. The storage unit stores a photographic history including the derived initial value, the photographic condition, and the date photographed.

SYSTEMS FOR LASER ALIGNMENT

Various methods and systems are provided for laser alignment systems, particularly laser alignment systems of medical imaging systems. In one example, a medical imaging system comprises: a gantry; and a laser mount including: a first section fixedly coupled to the gantry; a second section seated within the first section and slideable within the first section; and a third section seated within the second section and rotatable within the second section, the third section adapted to house a laser radiation source.

ARRANGEMENT HAVING A TABLET COMPUTER UNIT AND A GANTRY OF A MEDICAL IMAGING DEVICE

An arrangement includes a tablet computer unit having a tablet computer and a first connection unit and a gantry of a medical imaging device having a casing and a second connection unit. In at least one embodiment, the casing has a recess, in which the tablet computer unit can be positively mounted. Further, the second connection unit is arranged in a region of the recess such that, via the first connection unit and the second connection unit, a connection can be formed, which counteracts removal of the tablet computer unit from the recess.

Scanning mammography X-ray system with movement adaption mechanism

The present invention relates to mammography, e.g. tomosynthesis mammography. In order to provide a mammography X-ray imaging with improved data quality, a mammography X-ray imaging system (10) for tomosynthesis mammography is provided that comprises an X-ray source (12), an X-ray detector (14), a support structure (22), and a breast support (18) with a breast support surface (20). The X-ray source and the X-ray detector are mounted on an upwardly extending scan arm (24); the X-ray source is mounted on the scan arm above the breast support and the X-ray detector is mounted below the breast support. The scan arm is movably mounted to the support structure to perform a swivelling motion about a rotation axis (26) located below the breast support. During the swivelling motion, the scan arm swivels about the rotation axis such that the X-ray source and the X-ray detector perform a scan motion and an object on the breast support is radiated from different angular directions. A motion adapting ...

Portable Barium Swallow Test Apparatus

A portable barium test apparatus is used to perform Modified Barium Swallow Studies (MBSS) on patients in different locations, such as the home of the patient or a care facility. The apparatus includes a hand truck, a U-shaped support, a height-adjusting track, a support carriage, an X-ray generator, and an image-capturing device. The hand truck allows the medical staff to transport the apparatus to the desired location to perform the procedure. The U-shaped support maintains the X-ray generator and the image-capturing device at the desired arrangement to perform the procedure. The height-adjusting track enables the repositioning of the U-shaped support at the desired height to accommodate the patient. The support carriage connects the U-shaped support to the height-adjusting track and maintains the arrangement of the U-shaped support during the procedure. The X-ray generator and the image-capturing device enable the medical staff to perform the MBSS procedure on the patient.

INTRAORAL RADIATION TYPE X-RAY PHOTOGRAPHING APPARATUS AND METHOD THEREOF

The present invention provides an X-ray imaging system for capturing an X-ray image of teeth and a jawbone, including a tubular X-ray generating unit placed in an oral cavity, and a movable X-ray detection unit placed in the oral cavity outer side region corresponding to the X-ray generating unit and corresponding to a face or an X-ray detection unit having a curved surface shape similar to the face. The present invention having the configuration may obtain a teeth X-ray image with a large surface area while minimizing the dose of X-ray exposed to a patient by placing an X-ray generating device in the oral cavity and disposing a movable sensor or a sensor with a large surface area on the outer side of the oral cavity to obtain an X-ray image, reduce excessive X-ray exposure and foreign body sensation in the oral cavity, which a panoramic mode X-ray generating device or an oral sensor-type X-ray generating device in the related art has, to enhance the safety and convenience of the patient ...

DISTRIBUTED, FIELD EMISSION-BASED X-RAY SOURCE FOR PHASE CONTRAST IMAGING

An x-ray source for use in Phase Contrast Imaging is disclosed. In particular, the x-ray source includes a cathode array of individually controlled field-emission electron guns. The field emission guns include very small diameter tips capable of producing a narrow beam of electrons. Beams emitted from the cathode array are accelerated through an acceleration cavity and are directed to a transmission type anode, impinging on the anode to create a small spot size, typically less than five micrometers. The individually controllable electron guns can be selectively activated in patterns, which can be advantageously used in Phase Contrast Imaging.

SIGNAL AND POWER SUPPLY TRANSMISSION

РЕНТГЕНОВСКАЯ ДИАГНОСТИЧЕСКАЯ ТРУБКА

Заявляемый объект относится к медицинской технике, точнее к рентгеновской, и предназначен для использования в составе медицинских рентгенодиагностических аппаратов, предназначенных для исследования как мягких тканей, так и костных структур.Целью настоящей работы является создание рентгеновской диагностической трубки с катодным узлом, снабженным механизмом плавной регулировки размеров действительного фокуса трубки.Технический результат полезной модели выражается в обеспечении возможности плавной регулировки размеров действительного фокуса рентгеновской трубки. Он достигается тем, что в рентгеновской диагностической трубке, содержащей вакуумированную колбу, внутри которой находятся термокатод с фокусирующим экраном, изготовленным из металла с вольфрамовой нитью накала, и анод, соединенные с внешними электрическими контактами, предназначенными для подключения к трансформатору накала и высоковольтному трансформатору, между фокусирующим экраном и анодом, на расстоянии 3-5 мм от фокусирующего ...

АКУСТИЧЕСКИЕ РЕФЛЕКТОРЫ

... 1. Акустический рефлектор для подводного использования, содержащий оболочку, которая окружает сердечник, отличающийся тем, что оболочка имеет одно или более отверстий, обеспечивающих свободное поступление воды во внутреннюю область оболочки и удаление из внутренней области оболочки, когда рефлектор развертывается в воде.2. Акустический рефлектор по п.1, отличающийся тем, что он имеет круглое поперечное сечение и содержит оболочку, окружающую сердечник, при этом упомянутая оболочка дает возможность акустическим волнам на одной или более частотах проходить, по меньшей мере, частично через оболочку в сердечник, отражаться от части оболочки напротив входа акустической волны, частично проходить внутри по оболочке, объединяться с отраженной волной и повторно излучаться из рефлектора.3. Акустический рефлектор по п.1, отличающийся тем, что сердечник имеет объем, несколько меньший, чем внутренний объем оболочки.4. Акустический рефлектор по п.3, отличающийся тем, что сердечник имеет на своей поверхности ...

Verbessertes Röntgengeneratorgehäuse für medizinische Vorrichtungen

Röntgengeneratorgehäuse für eine Röntgenröhre beinhaltend die folgenden Bestandteile:- einen Innenraum,- eine Röntgengeneratorgehäusewand mit einer inneren Oberfläche und mit einer äußeren Oberfläche,- eine Aufnahmevorrichtung für die Röntgenröhre,- und wenigstens ein Versteifungselement, wobei das wenigstens eine Versteifungselement in der inneren und/oder der äußeren Wandung integriert ist.

Computer-supported X-ray tomograph

The invention relates to a computer-supported rotation-rotation or double-rotation X-ray tomograph with a device for rotating an X-ray tube and an X-ray detector in relation to the frequency of a mains voltage supply and comprising an X-ray pulse generator for emitting one or two X-ray pulses in each period of the mains voltage. The rotary movement of the X-ray tube (1) and of the X-ray detector (2) and the emission of the X-ray pulses are synchronised to the mains voltage. The computer-supported X-ray tomograph generates high-quality tomograms, has a small size and low weight and is relatively inexpensive. ...

Diagnostisches Bildgebungssystem

Dieses diagnostische Bildgebungssystem (1) ist zum Erzeugen von Berichtsdaten (RD), die ein diagnostisches Bild (G) und ein Analyseergebnis (RA1, RA2) umfassen, als Bilddaten, und zum Erzeugen von Probendaten (SD), die eine Probeentnahmeposition und ein Analyseergebnis (RA1, RA2) umfassen, als Dokumentdaten ausgebildet.

Optimization of the source firing pattern for X-ray scanning systems

Optimization of the source firing pattern for X-ray scanning systems

Acoustic reflectors

X-ray imaging apparatus

Acoustic reflectors

An acoustic reflector primarily for underwater use comprising a shell surrounding a core in which holes are provided in the shell to allow air and water freely to enter and leave the interior of the shell when the reflector is immersed in water. Various embodiments are described including the use of a metal shell matched to a water core, the use of a mounting bar, provision of a frame to reflect acoustically alpha numeric characters, a soluble plug to delay operation of the reflector, and coating the reflector with polyurethane to limit damage. Also proposed is a pulse pattern to improve the identification of an acoustic reflector in some circumstances. Designs of reflectors particularly suitable for use with the relatively low frequency sonars found in the fishing industry with an aluminium or aluminium alloy shell are described, as are reflectors with a non-metal shell suitable for use with the higher frequency sonars in the underwater exploration industry. The reflectors can be spherical ...

X-ray imaging at low contrast agent concentrations and/or low dose radiation

The present invention relates to X-ray examinations and to the improvement of patient safety during such. More specifically the invention relates to X-ray diagnostic compositions having ultra-low concentrations of iodine. The invention further relates to methods of X-ray examinations wherein a body is administered with an X-ray diagnostic composition and irradiated with a reduced radiation dose.

PROCESS AND FITTING TO GENERATE A JET OF FLUID, PROCESS AND SYSTEM OF TRANSFORMATION OF THE JET INTO A PLASMA AND APPLICATIONS OF THIS SYSTEM

La présente invention concerne un procédé et agencement pour engendrer un jet de fluide, procédé et système de transformation du jet en un plasma et applications de ce système. Selon l'invention, le procédé est caractérisé en ce qu'il comprend l'opération de créer à l'aide d'une électrovanne rapide haute pression (5), suivie d'une tuyère (7) montée sur l'ouverture de sortie de l'électrovanne, un jet de fluide pulsé (F) de dimensions submillimétriques et d'une densité atomique supérieure à 1020cm-3. L'invention trouve application dans le domaine des générateurs de plasma.

METHOD AND ARRANGEMENT FOR GENERATING A FLUID JET, METHOD AND SYSTEM FOR TRANSFORMATION OF THE JET INTO A PLASMA AND APPLICATIONS FOR SAME

실시간 정보 제공 충전 크래들 및 이를 포함하는 포터블 엑스선 촬영 장치

... 포터블 엑스선 촬영 장치의 충전 중은 물론 충전 중이 아닌 경우에도 장치의 배터리 잔량을 표시하고, 좀 더 구체적으로는 배터리 잔량을 이용하여 촬영 가능한 횟수를 실시간으로 표시하여 사용자가 충전 시기를 정확히 판단할 수 있도록 하는, 충전 크래들 및 이를 포함하는 포터블 엑스선 촬영 장치가 개시된다. 본 발명에 따른 포터블 엑스선 촬영 장치는, 충전 가능한 배터리를 갖는 포터블 엑스선 촬영 장치 본체; 상기 포터블 엑스선 촬영 장치 본체에 구비되고, 상기 배터리 충전 상태 정보를 전송하는 제 1 통신부; 외부 전원을 입력받아 상기 배터리에 충전 전력을 제공하는 충전 크래들; 상기 충전 크래들에 구비되고, 상기 제 1 통신부로부터 상기 배터리 충전 상태 정보를 수신하는 제 2 통신부; 및, 상기 충전 크래들에 구비되고, 상기 배터리 충전 상태 정보를 표시하는 표시부; 를 포함한다.

Multi-energy X-ray generator and control method of the multi-energy X-ray generator

Method and Apparatus for Radiating Charged Particles, and Method and Apparatus for Emitting X-Rays

In the present invention, a ferroelectric body is irradiated with ultraviolet light, and the ferroelectric body is caused to stably generate electric potential. A method for radiating charged particles, in which the UV-light-receiving surface of the ferroelectric body that receives UV light and is caused to generate a potential difference is irradiated with UV light having a wavelength not transmitted by the ferroelectric body, and charged particles are radiated from the charged-particle-radiation surface of the ferroelectric body, wherein the UV-light-receiving surface is irradiated with pulses of UV light at a peak power of 1 MW or greater. The pulse width of the UV light is measured in picoseconds (less than 1×10−9 seconds), and the UV pulses can be transmitted by fiber.

X-ray diagnostic apparatus and display method

According to an X-ray diagnostic apparatus, an X-ray tube radiates X-rays. An X-ray collimator adjusts an irradiation region of the X-rays. An X-ray detector includes a first detector and a second detector having a smaller detection area than a detection area of the first detector. The X-ray detector is able to detect the X-rays radiated with the first detector and the second detector at the same time. Processing circuitry generates a synthesized image obtained by synthesizing a first X-ray image generated based on an output from the first detector that detected the X-rays radiated in the irradiation region adjusted, and a second X-ray image generated based on an output from the second detector that detected the X-rays radiated in the irradiation region adjusted, the synthesized image having an image size corresponding to an aspect ratio of the irradiation region. The processing circuitry causes a display to display the synthesized image.

SOURCE IMAGE DISTANCE ADJUSTABLE X-RAY IMAGING APPARATUS

A source image distance (SID) adjustable X-ray imaging apparatus is provided. The X-ray imaging apparatus may include an arm including a first end and a second end, a first X-ray component arranged at the first end of the arm, and a second X-ray component arranged at the second end of the arm. The first X-ray component and the second X-ray component may be opposite to each other. The first X-ray component may be configured to generate X-rays or receive X-rays. The first end may include a first weight balancing mechanism. When the first X-ray component moves with respect to the first weight balancing mechanism, the SID of the X-ray imaging apparatus may change but the first weight balancing mechanism may maintain a center of gravity of the first end unchanged.

SYSTEMS AND METHODS FOR COMBINING THERMAL AND/OR OPTICAL IMAGING WITH DIGITAL RADIOGRAPHIC IMAGING

An example radiography scanning system includes: a radiation detector configured to generate digital images based on incident radiation; a radiation source configured to output the radiation toward the radiation detector; a thermal sensor configured to capture thermal images and having a field of view that at least partially overlaps a projection field of the radiation; and a computing device configured to: control the radiation source; receive the digital images from the radiation detector; receive the thermal images from the thermal camera; and output the digital images and the thermal images, in real-time, to a display device.

Alignment systems

Alignment systems (105) and associated methods of using such systems to help aim an x-ray source at an x-ray detector are described in this application. The alignment systems (105) can contain an electromagnetic radiation transmitter (115) (or receiver (135)) that is associated with the x-ray detector and an electromagnetic radiation receiver (135) (or transmitter (115)) that is associated with the x-ray source. Electromagnetic radiation produced by the electromagnetic radiation transmitter (115) can be detected by the receiver (135) and used to align the x-ray source and the x-ray detector in the x-ray device. In some configurations, the electromagnetic radiation transmitter (115) contains a radio-frequency (RF) antenna (or antenna array) that is attached in a fixed position relative to the x-ray detector and the electromagnetic radiation receiver (135) also contains an RF antenna (or antenna array) that is in a fixed position relative to the x-ray detector. Other embodiments are described ...

СИСТЕМА ЛУЧЕВОЙ ВИЗУАЛИЗАЦИИ

Группа изобретений относится к медицинской технике, а именно к средствам лучевой визуализации. Система лучевой визуализации содержит множество держателей, выполненных с возможностью позиционировать и поддерживать множество устройств лучевой визуализации, каждое из которых включает в себя регистрирующую излучение панель, имеющую двухмерную матрицу пикселов и выполненную с возможностью преобразования поданного излучения в сигнал изображения, так что части соответствующих устройств лучевой визуализации пространственно перекрываются при наблюдении со стороны облучения, и блок, выполненный с возможностью получения рентгеновского изображения на основе сигналов изображения от соответствующих устройств лучевой визуализации, причем по меньшей мере часть каждого из упомянутого множества держателей выполнена с возможностью поддерживать соответствующее одно из устройств лучевой визуализации в области, отличной от областей эффективных пикселов соответствующих устройств лучевой визуализации при наблюдении ...

АКУСТИЧЕСКИЕ РЕФЛЕКТОРЫ

Изобретение относится к пассивным акустическим рефлекторам и маркерам, используемым под водой. Акустический рефлектор, главным образом, для подводного применения, представляет собой оболочку, которая окружает сердечник. В оболочке образованы отверстия, которые обеспечивают свободное поступление воды внутрь оболочки и удаление воды из оболочки, когда рефлектор погружается в воду. Описываются различные примеры осуществления, включающие использование металлической оболочки, согласованной с водяным сердечником, использование установочного стержня, предоставление рамы для акустического отражения текстовых символов и цифр, растворимую заглушку для задержки срабатывания рефлектора, покрытие рефлектора полиуретаном для ограничения повреждений. Описываются конструкции рефлекторов с оболочкой из алюминия или алюминиевых сплавов, а также рефлекторы с неметаллической оболочкой. Особо важной особенностью изобретения является возможность использования для пометки и трассировки подводных неферромагнитных ...

ЛУЧЕВОЙ ТОМОГРАФ

ПЕРЕДАЧА СИГНАЛОВ И ЭЛЕКТРОПИТАНИЯ

... 1. Интегральная компоновка (10) для передачи сигнала и электропитания для высоковольтного переключателя, содержащая:- плату (12) питания;- основную плату (14);- изолирующую пластину (16),- по меньшей мере одну трансформаторную компоновку (18) и- по меньшей мере одну компоновку (20) для передачи сигнала;причем изолирующая пластина обеспечена между платой питания и основной платой;причем упомянутая по меньшей мере одна трансформаторная компоновка выполнена с возможностью подачи электрической энергии в схему возбуждения транзистора, который, в свою очередь, питает источник рентгеновского излучения, и причем упомянутая по меньшей мере одна трансформаторная компоновка содержит первичный электрический проводник (22), размещенный на плате питания для наведения электромагнитной индукции во вторичном электрическом проводнике (24), размещенном на основной плате;причем упомянутая по меньшей мере одна компоновка для передачи сигнала выполнена с возможностью передачи сигнала (26) между платой питания ...

Radiographiesystem mit bodenmontierter Trägereinheit

Die Erfindung betrifft ein medizinisches Radiographiesystem (1) zur Aufnahme eines Untersuchungsbereichs aufweisend eine Röntgenquelle (10) und einen Röntgendetektor (11), wobei- die Röntgenquelle an einer bodenmontierten, tragenden Trägereinheit (2) befestigt ist, und- die Trägereinheit derart ausgelegt ist, dass eine Position der Röntgenquelle in den drei Raumrichtungen (x,y,z) einstellbar ist und die Ausrichtung der Röntgenröhre auf den Röntgendetektor mittels eines kippbaren oder drehbaren Ausrichtungselements (6) einstellbar ist.

Verfahren und Datenverarbeitungssystem zum Bereitstellen von Entscheidungsunterstützungsdaten

Die Erfindung betrifft ein Verfahren zum Bereitstellen von Entscheidungsunterstützungsdaten, welches die folgenden Schritte umfasst:- Empfangen von Photon-Counting-Computertomographie-Daten eines Untersuchungsbereichs,- Bestimmen einer Position eines Thrombus in dem Untersuchungsbereich basierend auf den Photon-Counting-Computertomographie-Daten,- Generieren der Entscheidungsunterstützungsdaten, die den Thrombus und/oder eine Gefäßwand im Bereich des Thrombus betreffen, basierend auf den Photon-Counting-Computertomographie-Daten und der Position des Thrombus, und- Bereitstellen der Entscheidungsunterstützungsdaten,- wobei die Entscheidungsunterstützungsdaten eine Durchlässigkeit der Gefäßwand im Bereich des Thrombus betreffen.

Tomographieanlage und Verfahren für großvolumige Aufnahmen

Die Erfindung betrifft eine Tomographieanlage (R) mit einer ersten Strahlquelle (Q1) und einem ersten Detektor (RD1), der der ersten Strahlquelle (Q1) zugeordnet ist, sowie mit einer zweiten Strahlquelle (Q2) und einem zweiten Detektor (RD2), der der zweiten Strahlquelle (Q2) zugeordnet ist. Die Tomographieanlage (R) ist dazu vorbereitet, einen Scan durchzuführen, wobei der erste Detektor (RD1) in einer ersten Rotationsebene (RE1) entlang einer ersten kreissegmentförmigen Bahnkurve (BKD1) geführt wird, während der zweite Detektor (RD2) synchron in einer zweiten Rotationsebene (RE2) entlang einer zweiten kreissegmentförmigen Bahnkurve (BKD2) geführt wird. Außerdem ist die Tomographieanlage (R) dazu vorbereitet, hierbei mit dem ersten Detektor (RD1) einen ersten Datensatz (DS1) und mit dem zweiten Detektor (RD2) einen zweiten Datensatz (DS2) zu gewinnen. Die beiden Rotationsebenen (RE1, RE2) sind zueinander beabstandet angeordnet. Die Erfindung betrifft auch ein entsprechendes Verfahren ( ...

RÖNTGENSTRAHLEN-CT-MESSVORRICHTUNG UND KALIBRIERUNGSVERFAHREN DAFÜR

Eine Röntgenstrahlen-CT-Messvorrichtung, die zum Emittieren von Röntgenstrahlen von einer Röntgenstrahlenquelle, während ein Gegenstand, der auf einem Drehtisch angeordnet ist, gedreht wird, und zum Erhalten eines tomographischen Bild des Gegenstands durch Rekonstruieren von Projektionsbildern ausgebildet ist, umfasst eine Röntgenstrahlen-Fluktuationskalibrierungsvorrichtung, die in einem Röntgenstrahlensichtfeld angeordnet ist, eine Erfassungseinheit, die zum Erfassen von Fluktuationen einer Röntgenstrahlenbrennpunktposition unter Verwendung eines Röntgenstrahlen-projizierten Bilds der Röntgenstrahlen-Fluktuationskalibrierungsvorrichtung ausgebildet ist, und eine Korrektureinheit, die zum Korrigieren eines Röntgenstrahlenprojektionsbilds des Gegenstands unter Verwendung der erfassten Fluktuationen der Röntgenstrahlenbrennpunktposition ausgebildet ist.

Power source for portable medical devices

This application describes an internal, re-chargeable power source for a portable medical device. The power source contains a removable battery pack comprising a lithiumcontaining material with 5 to 7 battery cells in series, each individual cell having a current capacity ranging from about 3000 mAh to about 3700 mAh. The power source can have a total energy capacity ranging from about 65 Watt-hour to about 170 Watt-hours. Other embodiments are described.

X-ray apparatus and method for small angle scattering

Beschrieben ist eine Röntgenvorrichtung (100, 400) zum Untersuchen einer länglichen Probe (103, 403), insbesondere mittels Kleinwinkelstreuung an Fasern, aufweisend: eine Röntgenquelle (101, 401) zum Aussenden eines, insbesondere monochromatischen, Röntgenstrahls (102, 402); eine Probenträgeraufnahme (107, 407) zum Haltern eines eine Probe tragenden Probenträgers (110, 410), sodass die Probe quer zu einer Längsrichtung (113, 413) der Probe von dem Röntgenstrahl (102, 402) durchstrahlt wird; und einen Detektor (104, 404), der zum Detektieren von an der Probe in entgegengesetzten Winkeln gestreutem bzw. gebeugtem Röntgenstrahl (111a, 111b, 411a, 411b) ausgebildet und angeordnet ist.

DIFFERENTIAL PHASE CONTRAST X-RAY IMAGING SYSTEM AND COMPONENTS

A differential phase contrast X-ray imaging system includes an X-ray illumination system, a beam splitter arranged in an optical path of the X-ray illumination system, and a detection system arranged in an optical path to detect X-rays after passing through the beam splitter.

ACOUSTIC REFLECTORS

An acoustic reflector primarily for underwater use comprising a shell surrounding a core in which holes are provided in the shell to allow air and water freely to enter and leave the interior of the shell when the reflector is immersed in water. Various embodiments are described including the use of a metal shell matched to a water core, the use of a mounting bar, provision of a frame to reflect acoustically alpha numeric characters, a soluble plug to delay operation of the reflector, and coating the reflector with polyurethane to limit damage. Also proposed is a pulse pattern to improve the identification of an acoustic reflector in some circumstances. Designs of reflectors particularly suitable for use with the relatively low frequency sonars found in the fishing industry with an aluminium or aluminium alloy shell are described, as are reflectors with a non-metal shell suitable for use with the higher frequency sonars in the underwater exploration industry. The reflectors can be spherical ...

METHOD AND ARRANGEMENT FOR GENERATING A JET OF FLUID, METHOD AND SYSTEM FOR TRANSFORMING THE JET INTO PLASMA, AND USES OF SAID SYSTEM

La présente invention concerne un procédé et agencement pour engendrer un jet de fluide, procédé et système de transformation du jet en un plasma et applications de ce système. Selon l'invention, le procédé est caractérisé en ce qu'il comprend l'opération de créer à l'aide d'une électrovanne rapide haute pression (5), suivie d'une tuyère (7) montée sur l'ouverture de sortie de 1 'électrovanne, un jet de fluide puisé (F) de dimensions submillimétriques et d'une densité atomique supérieure à 1020cm-3. L'invention trouve application dans le domaine des générateurs de plasma.

Intelligent liver disease inspection device

DEVICE TO EXAMINE AN OBJECT BY MEANS OF X-RAYS PRODUCTS BY IMPULSES, HAS HIGH SPEED

Irradiator for electromagnetic radiation diffusion tomograph - has radioactive source movable inside protection casing contg. internal collimating hole

X-RAY IMAGING APPARATUS

방사선 촬영 장치 및 입자선 치료 시스템

... 본 발명은, 구조를 단순화할 수 있는 방사선 촬영 장치를 제공한다. 방사선 촬영 장치에서는, 조사 장치가 회전 갠트리의 회전 동에 설치된다. 한 쌍의 X선원이, 회전 동의 외측에 배치되고, 회전 동의 외면에 설치된다. 각 X선원에 대향하는 한 쌍의 FPD가 조사 장치에 설치된다. X선의 조사에 의해, 각 FPD 각각의 방사선 검출 소자로부터의 출력 신호에 기초하여 신호 처리 장치(93)에서 산출된 각 X선 강도 정보가, 메모리(100) 내에 저장된다. X선 강도 도입 장치(98)는, 입력 장치(101)에서 설정된 FOV 정보에 기초하여 메모리(100)에 저장되어 있는 X선 강도 정보 중 FPD의 소 FOV 영역(또는 대 FOV 영역) 내의 방사선 검출 소자로부터의 출력 신호에 기초하여 산출된 복수의 X선 강도 정보를 취출한다. 화상 재구성 장치(99)는, 이들 X선 강도 정보를 사용해서 환부의 위치 결정에 사용되는 삼차원 단층상 정보를 작성한다.

SELECTION OF A RADIATION SHAPING FILTER

System and method for adjusting dental X-ray exposure

An x-ray imaging system and a method for retrofitting existing x-ray generators to allow those generators to be controlled by a digital x-ray imaging system are disclosed. The x-ray imaging system includes an imaging array and an image controller. The imaging array is configured to be positioned within a patient's mouth, the imaging array acquiring an image of the patient's teeth when the patient's head is illuminated with x-rays. The imaging array includes an x-ray dosimeter that provides an x-ray exposure signal indicative of an x-ray exposure received by the imaging array. The image controller is coupled to the imaging array and receives the x-ray exposure signal, the image controller includes a first wireless link that controls an x-ray generator by initiating a pre-programmed x-ray exposure. The wireless controllable switch can be used to replace an existing manually controlled switch in an existing x-ray generator.

Single source dual energy having two filters for X-ray spectrum differentiation in the case of radiator screens having slotted plates

A slotted plate is for limiting an incident x-ray radiation. The slotted plate includes at least one slotted opening and two different x-ray filter regions for x-ray spectrum differentiation of the incident x-ray radiation. The two different x-ray filter regions are permanently arranged in the region of the at least one slotted opening such that radiation portions of the x-ray radiation penetrating the slotted opening having different x-ray spectra can be generated simultaneously. A radiator screen, an x-ray radiator for generating a radiation beam fan, a computer tomography device having such an x-ray radiator, and a method for controlling such a computer tomography device are also disclosed.

RADIATION-IRRADIATION SYSTEM

A radiation-irradiation system includes a radiation generating device that includes an exposure switch unit and a display device that includes a touch panel; the display device is adapted to be detachably mounted on the radiation generating device and displays an exposure switch mark on the touch panel; and an emission control unit validly receives only an irradiation instruction for radiation of the exposure switch unit in a case in which the display device is installed on the radiation generating device, and validly receives only an irradiation instruction for radiation of the exposure switch mark in the case of a state in which the display device is separated from the radiation generating device.

LOW NOISE TRANSMISSION SCAN SIMULTANEOUS WITH POSITRON EMISSION TOMOGRAPHY

A method and device is described for correcting PET images for the attenuation of effects of the tissues and periodic movements of the patient. The device provides gamma-rays for image registration along with the CT scan. The gamma-rays are detected by the same detectors that form the emission PET scan. The device for generating the gamma-rays is a rod that contains an array of detectors, and a radioactive source that emits two rays in coincidence with each other. One of these rays is a gamma ray, and the other can be a beta ray, an alpha ray, or a low energy x-ray. The position of the rod, which is moveable within the ring of the PET scanner, is monitored so that its position can be coordinated with the signals generated from the ring detectors.

СИСТЕМЫ И СПОСОБЫ ДЛЯ ЦИФРОВОЙ РАДИОГРАФИИ

System and method for adjusting dental x-ray exposure

An x-ray imaging system and a method for retrofitting existing x-ray generators to allow those generators to be controlled by a digital x-ray imaging system are disclosed. The x-ray imaging system includes an imaging array and an image controller. The imaging array is configured to be positioned within a patient's mouth, the imaging array acquiring an image of the patient's teeth when the patient's head is illuminated with x-rays. The imaging array includes an x-ray dosimeter that provides an x-ray exposure signal indicative of an x-ray exposure received by the imaging array. The image controller is coupled to the imaging array and receives the x-ray exposure signal, the image controller includes a first wireless link that controls an x-ray generator by initiating a preprogrammed x-ray exposure. The wireless controllable switch can be used to replace an existing manually controlled switch in an existing x-ray generator.

ACTIVE PIXEL INTRAORAL RADIOLOGICAL IMAGE SENSOR AND ASSOCIATED IMAGE CAPTURE METHOD

X-RAY MICRO IMAGING

The present invention provides improvements of resolution and contrast in the field of x-ray imaging by using a line emitting, quasi- monochromatic x-ray source for x-ray fluorescence computed tomography. A particular type of x-ray source suitable for this is a line emitting liquid-jet- anode x-ray source. X-ray fluorescence is obtained using nanoparticles, preferably coated nanoparticles with a metallic core. The x-ray radiation from the x-ray source is shaped and filtered using energy dispersive optics before being delivered to the nanoparticles.

DIFFERENTIAL PHASE CONTRAST X-RAY IMAGING SYSTEM AND COMPONENTS

A differential phase contrast X-ray imaging system includes an X-ray illumination system, a beam splitter arranged in an optical path of the X-ray illumination system, and a detection system arranged in an optical path to detect X-rays after passing through the beam splitter.

Cold cathode type Handheld X ray device

Linear-accelerator isocenter irradiation system used in limited space equipment

RADIOGRAPHIC SYSTEM, CONTROL METHOD, AND PROGRAM

Portable x-ray generator

A Mammography device capable of recognizing the subject

STACKED RADIATION SIGHT AND METHOD OF USE

The present invention relates to a stacked radiation sight and a method of use. The present invention relates to a stacked radiation sight and a method of use which provide a sight having various sizes of holes by using a sight body unit, a body unit groove, and an insertion unit provided to be stacked, thereby effectively obtaining an image by an imaging region. COPYRIGHT KIPO 2016 ...

방사선 화상 생성 장치

... 강도 분포 화상(10)의 제1 관심 영역(101)에 있어서의 제1 ROI 화소값과, 제2 관심 영역(102)에 있어서의 제2 ROI 화소값을 취득한다. 제1 및 제2 관심 영역 중 한쪽은, 다른 쪽에 대하여, 강도 분포 화상 중 강도 변조의 주기에 있어서, π/2의 위상차로 되는 위치 또는 그 근방에 설정되고 있다. 계속해서, 제1 및 제2 ROI 화소값을, 강도 분포 화상마다 플롯하여 얻어지는 타원 궤적을 결정한다. 계속해서, 타원 궤적을 소정 각도마다 분할하여 얻어지는 적어도 k개의 각도 영역에 대응하는 강도 분포 화상을 사용하여, k매의 각도 영역 화상을 취득한다. 계속해서, k매의 각도 영역 화상을 사용하여, 방사선 화상을 생성한다. 여기에서 k는 3 이상의 정수이다.

X-RAY IMAGING APPARATUS AND CONTROL METHOD THEREOF

Provided are an X-ray imaging apparatus capable of photographing a hand of a user and easily acquiring information on the thickness of a target object, information on a photographing position, or information on a photographing angle from the photographed image, and a control method thereof. The X-ray imaging apparatus according to an embodiment of the present invention includes an X-ray source for generating and emitting X-rays; a photographing unit mounted on the X-ray source and capturing a camera image; and a control unit for detecting both hands of the user in the camera image, calculating a distance between both hands which are detected, and controlling an X-ray emitting condition based on the calculated distance between both hands. COPYRIGHT KIPO 2018 (110) X-ray source (120) Photographing unit (130) Source driving unit (140) Control unit (151) Display unit (152) Input unit (170) Storage unit (180) Communication unit ...

METHOD AND APPARATUS FOR IMPROVED SAMPLING RESOLUTION IN X-RAY IMAGING SYSTEMS

The present invention pertains to an apparatus and method for X-ray imaging wherein a radiation source comprising rows of discrete emissive locations can be positioned such that these rows are angularly offset relative to rows of sensing elements on a radiation sensor. A processor can process and allocate responses of the sensing elements in appropriate memory locations given the angular offset between source and sensor. This manner of allocation can include allocating the responses into data rows associated with unique positions along a direction of columns of discrete emissive locations on the source. Mapping coefficients can be determined that map allocated responses into an image plane.

DEVICE HAVING A C-ARM AND X-RAY IMAGER

The disclosure provides a device having a C-arm, the C-arm including a main body of which the cross-sectional profile is formed as a double H, an outer wall, an inner wall and two side walls of the main body forming a rectangular cavity. The device also includes running wires arranged on the main body and running rollers, on which the C-arm is movably mounted, rolling on the running wires. The running wires and the running rollers are arranged in such a way that at least 50 percent of the mounting forces acting on the running wires due to the running rollers is introduced into the side walls of the main body. The disclosure also provides an x-ray imager having such a device. The disclosure offers the advantage that undesired oscillations of the C-arm are avoided.

X-RAY ASSEMBLY INCLUDING A PLURALITY OF X-RAY FACILITIES

System and methods are provided for an X-ray assembly including at least two X-ray facilities each with a control facility and a recording assembly including an X-ray tube and an X-ray detector. At least one of the X-ray facilities is a mobile X-ray facility with a mobile carrier carrying the recording assembly. The control facility of least one of the at least one mobile X-ray facility is configured to control the image recording operation of the respective X-ray facility using control data received from another control facility via a communication connection and/or to transfer at least one recorded image dataset to at least one further control facility via the communication connection.

Recording a panorama dataset of an examination object by a movable medical x-ray device

The disclosure relates to a method for recording a panorama dataset of an examination object by a movable medical x-ray device, to a medical x-ray device, and to a computer program product for carrying out the method. The medical x-ray device has an x-ray source, which emits a bundle of x-rays, wherein a first image segment, which maps at least one part of the examination object, is recorded at a first point in time. Position data is acquired, which maps the spatial position of the x-ray device at this first point in time. At least one further image segment along an imaging path is recorded after there has been a movement of the x-ray device, wherein the imaging path lies in one plane, wherein a central ray of the bundle of x-rays emitted by the x-ray source does not run in parallel to the plane in which the imaging path lies. Additionally, position data is acquired, which maps the spatial position of the x-ray device at the time of the recording of the at least one further image segment ...

X-ray diagnostic apparatus

An X-ray diagnostic apparatus comprises: an X-ray detector including a first detector and a second detector capable of simultaneously detecting X-rays irradiated from an X-ray tube; and processing circuitry configured to correct, by using information of a second image that is based on an output from the second detector, a first image that is based on an output from the first detector.

SYSTEMS AND METHODS FOR IMPROVED COLLIMATION SENSITIVITY

A detector assembly is provided that includes a semiconductor detector, a pinhole collimator, and a processing unit. The semiconductor detector has a first surface and a second surface opposed to each other. The first surface includes pixels, and the second surface includes a cathode electrode. The pinhole collimator includes an array of pinhole openings corresponding to the pixels. Each pinhole opening is associated with a single pixel of the semiconductor detector, and the area of each pinhole opening is smaller than a corresponding area of the corresponding pixel. The processing unit is operably coupled to the semiconductor detector and configured to identify detected events within virtual sub-pixels distributed along a length and width of the semiconductor detector. Each pixel includes a plurality of corresponding virtual sub-pixels (as interpreted by the processing unit), wherein absorbed photons are counted as events in a corresponding virtual sub-pixel.

Differential phase contrast X-ray imaging system and components

A differential phase contrast X-ray imaging system includes an X-ray illumination system, a beam splitter arranged in an optical path of the X-ray illumination system, and a detection system arranged in an optical path to detect X-rays after passing through the beam splitter.

X-RAY CT DEVICE AND MEDICAL INFORMATION MANAGEMENT DEVICE

In an X-ray CT device according to an embodiment, reconstruction circuitry reconstructs a positioning image from projection data collected based on a detection signal of transmitted X-rays in positioning imaging performed at a first tube current. Circuitry detects body parts of a subject included in the positioning image. Storage stores information pieces relating to body parts, image quality levels for each of the information pieces relating to the body parts, and an X-ray count value corresponding to each of the image quality levels in an associated manner. The circuitry selects an image quality level corresponding to a desired body part. The circuitry acquires a second tube current based on the first tube current, an X-ray count value in the positioning imaging, and an X-ray count value associated with the selected image quality level. The circuitry controls an X-ray tube to perform main imaging based on the second tube current.

Radiation irradiation detection system and radiation generation apparatus

A radiation irradiation detection system includes a radiation generation apparatus that includes a radiation generation unit, an emission control unit controlling emission of the radiation, and an exposure switch unit receiving a radiation irradiation instruction and a radiation stoppage instruction, and a radiation detection apparatus that includes a radiation detector detecting the radiation transmitted through a subject, and a detection control unit controlling the radiation detector, and the emission control unit starts emission of the radiation in a case where the emission permitting signal output from the detection control unit is received while the exposure switch unit is receiving the radiation irradiation instruction, continuously performs emission of the radiation regardless of a reception state of the emission permitting signal in a preset emission period after the radiation starts to be emitted, and stops emission of the radiation in a case where the instruction reception unit ...

Radiation imaging apparatus, radiation imaging system, control method of radiation imaging apparatus, and non-transitory computer-readable storage medium

A radiation imaging apparatus is provided. The radiation imaging apparatus comprises a plurality of pixels used to acquire a radiation image, and a readout circuit configured to read out a signal from each of the plurality of pixels. Correction image data used for performing offset correction is acquired from the plurality of pixels in an acquisition mode associated with an estimated value of the signal and system noise generated when the readout circuit reads out the signal, the estimated value and the system noise being set according to an imaging mode by a user.

Systems and methods for identifying biopsy location coordinates

A method for determining a lesion location in a patient for biopsy along X, Y, and Z axes. The method includes positioning the patient in an examination device to collect examination images showing the lesion. The method includes positioning the patient in a biopsy device configured for holding the patient during the biopsy and collecting a biopsy image of the patient using the biopsy device. The method includes analyzing the biopsy image to determine a measured x-coordinate and a measured y-coordinate of the lesion along the X and Y axes, respectively, analyzing the examination images to determine a calculated z-coordinate along the Z axis of the lesion, and determining the location of the lesion based on the measured x-coordinate and the measured y-coordinate from the biopsy image and the calculated z-coordinate determined from the one or more examination images.

ПЕРЕДАЧА СИГНАЛОВ И ЭЛЕКТРОПИТАНИЯ

Изобретение относится к передаче сигнала и электропитания для источника рентгеновского излучения. Технический результат - улучшение передачи сигнала и электропитания с повышенными эксплуатационными возможностями. Интегральная компоновка для передачи сигнала и электропитания содержит плату (12) питания; основную плату (14); изолирующую пластину (16), по меньшей мере одну трансформаторную компоновку (18) и по меньшей мере одну компоновку (20) для передачи сигнала. Изолирующая пластина обеспечена между платой питания и основной платой. Трансформаторная компоновка выполнена с возможностью подачи электрической энергии в схему возбуждения транзистора, который питает источник рентгеновского излучения. Трансформаторная компоновка содержит первичный электрический проводник, размещенный на плате питания для того, чтобы вызывать электромагнитную индукцию во вторичном электрическом проводнике, размещенном на основной плате. Компоновка для передачи сигнала выполнена с возможностью передачи сигнала между ...

СИСТЕМЫ И СПОСОБЫ ДЛЯ ЦИФРОВОЙ РАДИОГРАФИИ

Группа изобретений относится к области цифровой радиографии. Раскрыт способ цифровой радиографии, реализуемый вычислительным устройством, при этом вычислительное устройство включает в себя по меньшей мере один процессор и по меньшей мере одно запоминающее устройство, способ содержит этапы, на которых: дают указание источнику излучения устройства визуализации испускать излучения к целевому объекту, который подлежит исследованию, устройство визуализации включает множество датчиков дозы и множество визуализирующих детекторов, и каждый из множества датчиков дозы соответствует одному из множества визуализирующих детекторов; дают указание каждому из множества датчиков дозы обнаружить дозы излучения, принимаемые соответствующим визуализирующим детектором; определяют дозы излучения, обнаруженные множеством датчиков дозы, выбирают по меньшей мере один визуализирующий детектор из множества визуализирующих детекторов на основании доз излучения; дают указание по меньшей мере одному указанному визуализирующему ...

РЕНТГЕНОВСКИЙ ИЗЛУЧАТЕЛЬ

Полезная модель относится к области медицинской техники, точнее к рентгеновской, и предназначена преимущественно для ближнефокусной лучевой терапии грибковых заболеваний, дерматозов (экземы, нейродермитов, дермобразии, кератодермии, красного плоского лишая, омозолелости кожи) и инфильтративных очагов поражения кожи; лечения диффузионного нейродермита, неподдающегося другим методам лечения. Целью настоящей работы является повышение эффективности лечения кожных заболеваний. Технический результат полезной модели выражается в расширении арсенала технических средств ближнефокусной лучевой терапии. Он достигается тем, что в рентгеновском излучателе, содержащем герметичный корпус, выполненный с возможностью вакуумирования, из рентгенозащитного материала с выходным рентгенопрозрачным окном, внутри которого находится рулонная лента с клеящейся подложкой с механизмом ее разматывания, на внешнюю поверхность рулонной ленты нанесен дополнительный слой из молибдена толщиной 10 мкм.

РЕНТГЕНОВСКАЯ ВИЗУАЛИЗАЦИЯ ПРИ НИЗКИХ КОНЦЕНТРАЦИЯХ КОНТРАСТНОГО АГЕНТА И/ ИЛИ НИЗКОЙ ДОЗЕ ИЗЛУЧЕНИЯ

... 1. Композиция, содержащая йодированный рентгеноконтрастный агент и фармацевтически приемлемый носитель или эксципиент, где концентрация йода в композиции составляет менее 100 мг l/мл.2. Композиция по п.1, где рентгеноконтрастный агент представляет собой неионное йодированное мономерное, димерное, тримерное, тетрамерное или пентамерное соединение.3. Композиция по п.1 или 2, где рентгеноконтрастный агент представляет собой йодиксанол или соединение формулы II:4. Композиция, содержащая йодированный рентгеноконтрастный агент и фармацевтически приемлемый носитель или эксципиент, где концентрация йода в композиции составляет 10-170 мг l/мл, для применения в способе рентгенологического исследования, включающем:введение композиции в организм;воздействие на организм дозой рентгеновского излучения, обеспеченной при энергии напряжения в трубке в диапазоне 70-140 kVp (пиковое напряжение в кВ);исследование организма с использованием диагностического устройства икомпилирование данных исследования.5.

Acoustic reflectors

An acoustic reflector primarily for underwater use comprising a shell surrounding a core in which holes are provided in the shell to allow air and water freely to enter and leave the interior of the shell when the reflector is immersed in water. Various embodiments are described including the use of a metal shell matched to a water core, the use of a mounting bar, provision of a frame to reflect acoustically alpha numeric characters, a soluble plug to delay operation of the reflector, and coating the reflector with polyurethane to limit damage. Also proposed is a pulse pattern to improve the identification of an acoustic reflector in some circumstances. Designs of reflectors particularly suitable for use with the relatively low frequency sonars found in the fishing industry with an aluminium or aluminium alloy shell are described, as are reflectors with a non-metal shell suitable for use with the higher frequency sonars in the underwater exploration industry. The reflectors can be spherical ...

Mountings for Acoustic Reflectors

A Portable Coin Freed Apparatus for Generating Röntgen Rays.

... 6863. Vidal, M. March 16. R÷ntgen-ray apparatus.- The circuit of the generating-apparatus is completed for a definite time after the insertion of a coin and the operation of a pusher which winds up a clock and raises a shutter in the viewing-box. The coin dropped down a shoot 34 above one end of a beam 9 tilts it till a metallic piece 10 at the other end registers with two strap terminals 13, 14. On thrusting a pusher 27 against a lever 31 the mainspring of clockwork in a box 18 is wound up, and an arm 20 turning with the lever makes a cam 15 press the terminals and intermediate piece into mutual contact so that the circuit of the coil is completed till an arm 21 reverses the cam. The shutter in the viewing-box is raised by the action of a pusher on a lever m, which is thrust behind a pawl 32 that is subsequently tripped by a knock when the cam is reversed. Normally, the coin is prevented from rolling off the tilted beam 9 by a vertical plate 24 on a swivel 22 set by a spring 25, but a ...

Radiation therapy imaging and delivery utilizing coordinated motion of gantry and couch

SYSTEM AND METHOD FOR ADJUSTING DENTAL X-RAY EXPOSURE

An x-ray imaging system and a method for retrofitting existing x-ray generators to allow those generators to be controlled by a digital x-ray imaging system are disclosed. The x-ray imaging system includes an imaging array and an image controller. The imaging array is configured to be positioned within a patient's mouth, the imaging array acquiring an image of the patient's teeth when the patient's head is illuminated with x-rays. The imaging array includes an x-ray dosimeter that provides an x-ray exposure signal indicative of an x-ray exposure received by the imaging array. The image controller is coupled to the imaging array and receives the x-ray exposure signal, the image controller includes a first wireless link that controls an x-ray generator by initiating a preprogrammed x-ray exposure. The wireless controllable switch can be used to replace an existing manually controlled switch in an existing x-ray generator.

OPTIMIZATION OF THE SOURCE FIRING PATTERN FOR X-RAY SCANNING SYSTEMS

The present application discloses a computed tomography system having non-rotating X-ray sources that are programmed to optimize the source firing pattern. In one embodiment, the CT system is a fast cone-beam CT scanner which uses a fixed ring of multiple sources and fixed rings of detectors in an offset geometry. It should be appreciated that the source firing pattern is effectuated by a controller, which implements methods to determine a source firing pattern that are adapted to geometries where the X-ray sources and detector geometry are offset.

SYSTEMS AND METHODS FOR ADAPTIVELY PROCESSING OF IMAGES USING DATA ACQUISITION AND PILLAR MODEL

Dispositif pour établir des paramètres de traitement d'image, caractérisé en ce qu'il comprend: un moyen (456) pour accéder à des paramètres d'acquisition de données d'image ; et un moyen (474) pour établir des paramètres de traitement d'image en fonction des paramètres d'acquisition, dans lequel les paramètres d'acquisition comprennent un ou plusieurs des paramètres suivants: une tension de tube à rayons X, une préfiltration, une dimension de foyer, une distance de la source de rayons X au détecteur (SID) et un mode de lecture du détecteur.

CONTROL APPARATUS, CONTROL METHOD, AND STORAGE MEDIUM

Real-time tomosynthesis guidance for radiation therapy

The present invention pertains to an apparatus and method for delivering radiation to a human patient or other mammal. A scanning electron beam x-ray source is used and the detector can be a photon counting detector. The area of the detector is less than the area of field of view in the patient. Tomosynthesis can be used to generate images and images can be produced rapidly in real time.

Tomosynthesis system for digital x-ray imaging and method of controlling the same

Disclosed herein are a tomosynthesis system for digital X-ray imaging and a method of controlling the tomosynthesis system. The tomosynthesis system includes an X-ray source, a detector, and a terminal. The X-ray source continuously moves during a scan period, and maintains a uniform X-ray focus in each capture section in which capture is performed by adjusting the direction of an emitted electron beam. The detector detects an image of X-rays having passed through an area of interest of an object in the capture section. The terminal controls the adjustment of the direction of the electron beam, creates a three-dimensional (3D) X-ray image by synthesizing detected X-ray images, and then displays the 3D X-ray image.

Fan-shaped x-ray beam imaging systems employing graded multilayer optic devices

An X-ray imaging system that produces one or more fan-shaped beams is described. The system includes a target for emitting X rays that includes at least one target focal spot, and one or more graded multilayer optic devices in optical communication with the target. The optics transmits at least a portion of the source X rays to produce the one or more fan-shaped beams. The graded multilayer optic devices include at least a first graded multilayer section for redirecting and transmitting X rays through total internal reflection. The graded multilayer section includes a high-index layer of material having a first complex refractive index n 1 , a low-index layer of material having a second complex refractive index n 2 , and a grading zone disposed between the high-index and low-index layers of material. The grading zone includes a grading layer having a third complex refractive index n 3 such that Re(n 1 )>Re(n 2 )>Re(n 3 ).

Radiographic image capturing system and radiographic image capturing method

In a radiographic image capturing system and radiographic image capturing method, in a case that at least two radiation sources are housed in a radiation output device, weighting of doses of respective radiation emitted from the at least two radiation sources is carried out. Thereafter, respective radiation is applied to a subject from the at least two radiation sources in accordance with the weighting. Then, the radiation detecting device detects the respective radiation that has passed through the subject and converts the detected radiation into a radiographic image.

Method of removing foil shadows of a synchronous grid, and a radiographic apparatus using the same

Grid foil shadows of a synchronous grid are removable by obtaining an approximate fluoroscopic image by extracting detection signals of pixels not influenced by the grid foil shadows from a fluoroscopic image and carrying out an interpolation process thereon, obtaining a grid foil shadow image by determining a difference between the fluoroscopic image and the approximate fluoroscopic image, obtaining a foil shadow standard image by averaging the grid foil shadow image in a longitudinal direction of the grid foil shadows, and removing the grid foil shadows by determining a difference between the fluoroscopic image and the foil shadow standard image.

Low-Density Magnesium-Aluminum-Silicate (MAS) Microparticles for Radiotherapy and/or Radioimaging

This invention relates to low density radioactive magnesium-aluminum-silicate (MAS) microparticles that contain either samarium-yttrium, samarium, or lutetium as medical isotopes for radiotherapy and/or radioimaging.

Dual-source ct device and method for spiral scanning

At least one embodiment of the invention relates to a dual-source CT device with two focus-detector systems arranged on a gantry offset at an angle n and at least one embodiment relates to a method for spiral scanning and for the reconstruction of tomographic image data of a patient. In at least one embodiment, the detectors have a different z-width in the system axis direction and a computer system with a program memory with at least one computer program, by which during operation the dual-source CT device controls a spiral scanning of a patient and CT-image data is reconstructed from absorption data obtained from both unequally wide detectors, wherein in particular a spiral is controlled with a couch feed rate per rotation, which is greater than the maximum couch feed rate possible with the narrower detector.

X-ray system and method

An x-ray system includes an x-ray tube having an anode and a cathode, a sensor configured to sense a condition that results from an operation of the x-ray tube, and a communication device for transmitting a signal to a panel based at least in part on the sensed condition, the panel configured to receive radiation and generate image signals in response to the received radiation. An imaging method includes sensing a condition that results from an operation of an x-ray tube, and transmitting a signal to a panel in response to the sensed condition, wherein the panel is configured to generate image signals in response to radiation, and includes a plurality of image elements.

Method For Calibrating A CT System With At Least One Focus-Detector Combination With A Quanta-Counting Detector

A method is disclosed for calibrating a CT system with at least one focus-detector combination with a quanta-counting detector including a plurality of detector elements, with the focus-detector combination being arranged to enable it to be rotated around a measurement region and a system axis arranged therein, and an X-ray bundle going out from the focus to the detector which possesses an X-ray energy spectrum over an energy range. In at least one embodiment of the method, actual attenuation values from CT scans obtained with an X-ray energy spectrum are compared with theoretical mono-energetic required attenuation values even in the paralysis range of the quanta-counting detector and a transfer function is determined between the required attenuation values and the actual attenuation values for each detector element and thereby a calibration of the measured attenuation values is carried out.

Device and method to generate x-ray radiation with two spectra

In a device, a method and a computer-readable storage medium encoded with programming instructions to generate x-ray radiation to examine a subject with at least two spectra respectively of x-ray radiation of different average photon energies, an x-ray tube is used that has at least two foci that are different from one another, and the device is operated to switch between the foci in order to generate x-ray radiation. A spectrum of x-ray radiation respectively emanates from each focus. A filter is associated with the x-ray tube such that the spectrum of x-ray radiation emanating from one of the foci is not filtered by the filter and the spectrum of x-ray radiation emanating from another of the foci is filtered by the filter, such that the average photon energy of the filtered spectrum of x-ray radiation is higher than the average photon energy of the unfiltered spectrum of x-ray radiation.

X-ray system and method to generate x-ray image data

An x-ray system to generate x-ray image data of a predefined volume segment of an examination subject has either an arc-shaped mount or an annular gantry, an x-ray emitter arrangement with multiple x-ray microemitters, an x-ray detector arrangement with multiple x-ray pixels arranged directly adjacent to one another, and a controller to activate the x-ray emitter arrangement and the x-ray detector arrangement. The x-ray emitter arrangement and the x-ray detector are situated opposite one another on the arc-shaped mount or the gantry. The x-ray system is designed for introduction of the examination subject between the x-ray emitter arrangement and the x-ray detector.

System and method for performing a comprehensive health assessment

A system and method for providing a comprehensive overall health assessment is disclosed. A health assessment system includes first and second support structures oriented in a vertical fashion and spaced apart from one another to define a scanning area configured to receive a subject to be scanned, an x-ray imaging system incorporated into the first and second support structures and configured to acquire x-ray image data from the subject in a standing position, and at least one additional data acquisition device configured to acquire health related data from the subject. The health assessment system also includes a computer programmed to receive the x-ray image data and the health related data and generate a diagnostic output based on the x-ray image data and the health related data, the diagnostic output comprising at least one of a health related diagnosis and a recommendation for future action.

Dental and orthopedic densitometry modeling system and method

A dental and orthopedic densitometry modeling system includes a controller with a microprocessor and a memory device connected to the microprocessor. An input device is also connected to the microprocessor for inputting diagnostic procedure parameters and patient information. X-ray equipment including an X-ray source and an X-ray detector array are connected to a positioning motor for movement relative to a patient's dental or orthopedic structure in response to signals from the microprocessor. The output consists of a tomographical densitometry model. A dental/orthopedic densitometry modeling method involves moving the X-ray equipment across a predetermined scan path, emitting dual-energy X-ray beams, and outputting an image color-coded to correspond to a patient's dental or orthopedic density.

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 includes a first grating unit, a grating pattern unit, a radiological image detector. The first grating unit has a plurality of radiation shield units that shields the radiation emitted from the radiation source and a substrate on which the first radiation shield units are arranged and which enables the radiation emitted from the radiation source to penetrate therethrough. The grating pattern unit has a period that substantially coincides with a pattern period of a radiological image. The radiological image detector detects the radiological image masked by the grating pattern unit and has a plurality of pixels converting and accumulating the radiation into charges and a substrate. A thermal expansion coefficient of the substrate of the first grating unit is the substantially same as a thermal expansion coefficient of the substrate of the radiological image detector.

X-ray ct apparatus

An X-ray CT apparatus is provided. The X-ray CT apparatus includes an X-ray tube configured to apply an X-ray onto a subject, a scan device configured to rotate the X-ray tube about the subject to perform an X-ray CT scan, a first control device configured to switch an X-ray output of the X-ray tube from a first level to a second level smaller than the first level when the X-ray tube is placed at a first view angle, and configured to switch the X-ray output from the second level to the first level when the X-ray tube is placed at a second view angle, and a second control device configured to set the first view angle and the second view angle such that an X-ray exposure dose reduced by setting the X-ray output of the X-ray tube smaller than the first level becomes even on right and left sides.

Seven or more degrees of freedom robotic manipulator having at least one redundant joint

A robotic treatment delivery system including a linear accelerator (LINAC), and a robotic manipulator coupled to the LINAC. The robotic manipulator is configured to move the LINAC along seven or more degrees of freedom, at least one of the seven degrees of freedom being a redundant degree of freedom.

Anode target for an x-ray tube and method for controlling the x-ray tube

Anode targets for an x-ray tube and methods for controlling x-ray tubes for x-ray systems are provided. One x-ray system includes a field-generator configured to generate a field, an electron beam generator configured to generate an electron beam directed towards a target and a voltage controller configured to control the electron beam generator to produce an electron beam at a first energy level and an electron beam at a second energy level. The x-ray system also includes a field-generator controller configured to control a field to deflect at least one of the electron beams, wherein the electron beam, at the first energy level, impinges on the target at a first contact position and the electron beam, at the second energy level, impinges on the target at a second contact position. The at the first contact position and at the second contact position is configured to filter x-rays.

Radiological image detection apparatus, radiographic apparatus and radiographic system

A radiological image detection apparatus includes a first grating unit, a grating pattern unit, a radiological image detector, and an anti-scatter grating. The grating pattern unit has a period that substantially coincides with a pattern period of a radiological image formed by radiation having passed through the first grating unit. The radiological image detector detects the radiological image masked by the grating pattern unit. The anti-scatter grating is arranged on a path of the radiation incident onto the radiological image detector and removes scattered radiation. A smoothing process is performed for at least one of a surface and a backside of the anti-scatter grating intersecting with a traveling direction of the radiation.

Multi-source radiation system and method for interwoven radiotherapy and imaging

An arc radiotherapy and imaging system is provided which includes a first radiation source and a second radiation source. The first radiation source is suitable for treating a region of a patient, and the second radiation source is suitable for imaging the region of the patient. A control is also provided for automatically adjusting system operation, according to a defined schedule, between treating the region of the patient using the first radiation source and imaging the region of the patient using the second radiation source, thereby facilitating both treating and imaging of the region of the patient.

Apparatus for providing dental radiology image and method cephalometric

A dental x-ray unit comprising: an X-ray generator adapted to generate an X-ray beam in the direction of a patient's head, means of collimation adapted to confer given dimensions to the generated X-ray beam; a sensor placed facing the generator, receiving the radiologic projection of the collimated beam having irradiated the patient's head and supplying a cephalometric image of the patient's head, characterized in that the device includes: the means to acquire at least one photographic image of the patient's head, the means of automatic control for the means of collimation according to the at least one photographic image so that the dimensions of the collimated X-ray beam are adjusted to the dimensions of the patient's head.

X-ray ct apparatus

There is provided an X-ray CT apparatus including: an X-ray source; a wedge which is disposed between the X-ray source and a subject and in which a shield blocking a part of an X ray is formed; a wedge driving unit for moving position of the wedge; and a system control unit controlling the wedge driving unit during a scan execution period to control the position of the wedge.

Method and apparatus for advanced x-ray imaging systems

The present invention pertains to an apparatus and method for X-ray imaging a human patient. A vacuum bell bonded to an X-ray radiation-permeable window that can emit X-ray radiation from a plurality of spots located 1 cm from its edge, a collimator, and a detector are used. A ring of stationary X-ray sources can also be used with a stationary collimator and a rotating slot collimator and detector. An X-ray beam can be aligned in an X-ray system by establishing a position of the beam with respect to a moving collimator at a number of points in time, monitoring the velocity of the collimator, navigating the beam to a calculated position of a hole in the collimator, and correcting the alignment of the beam based on the location of the beam on the detector.

Radiation imaging apparatus, and control method and program of the apparatus

An energy control unit continuously adjusts energy of radiations in one shot emitted by an X-ray irradiation unit. An X-ray detection unit generates a plurality of image data pieces in one shot by detecting the radiations whose energy is continuously adjusted and transmitted through a subject. An image classification unit classifies the plurality of image data pieces generated by the X-ray detection unit into image data generated by the radiations of a high energy side and image data generated by the radiations of a low energy side. An image subtraction unit performs weighting and subtraction on the image data generated by the radiations of the high energy side and the image data generated by the radiations of the low energy side.

Method for obtaining image data with the aid of an x-ray image recording apparatus having a filter and an x-ray image recording apparatus

A method to optimally set a position of a form filter in an x-ray image recording apparatus is proposed. The x-ray image recording apparatus has an x-ray radiation source and an x-ray radiation detector. An x-ray image is firstly recorded in a first position of the form filter. A new position of the filter is then calculated and automatically set with the aid of the x-ray image. A new x-ray image is then recorded. With a minimal dose of a patient, the method enables low contrast images to be recorded for a minimal main dose of the patient, in particular in a sequence.

Computed Tomography Imaging Process And System

A computed tomography imaging process, including: accessing projection data representing two-dimensional projection images of an object acquired using a misaligned tomographic imaging apparatus; and processing the projection data to generate misalignment data representing one or more values that quantify respective misalignments of the tomographic imaging apparatus.

Patient alignment system with external measurement and object coordination for radiation therapy system

A patient alignment system for a radiation therapy system. The alignment system includes multiple external measurement devices which obtain position measurements of components of the radiation therapy system which are movable and/or are subject to flex or other positional variations. The alignment system employs the external measurements to provide corrective positioning feedback to more precisely register the patient and align them with a radiation beam. The alignment system can be provided as an integral part of a radiation therapy system or can be added as an upgrade to existing radiation therapy systems.

Methods and apparatus for scatter correction for cbct system and cone-beam image reconstruction

Embodiments of methods and/or apparatus for 3-D volume image reconstruction of a subject, executed at least in part on a computer for use with a digital radiographic apparatus, can obtain image data for 2-D projection images over a range of scan angles. For each of the plurality of projection images, an enhanced projection image can be generated. In one embodiment, a first scatter intensity distribution through the plurality of projection images can be modulated based on a first scaling function and a SPR to generate a second scatter intensity distribution through the plurality of projection images, which can be combined with the original plurality of projection images.

X-ray computed tomography apparatus and radiation detector

According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a detector, a first DAS, and a second DAS. The radiation detector includes a plurality of detection elements. Each detection element repeatedly detects X-rays generated by the X-ray tube and transmitted through a subject and repeatedly generates an electrical signal corresponding to the energy of the repeatedly detected X-rays. The first DAS acquires the electrical signal detected by part of the imaging region of each detection element in the integral mode. The second DAS acquires the electrical signal detected by the other part of the imaging region of each detection element in the photon count type mode.

Dental and orthopedic densitometry modeling system and method

A dental and orthopedic densitometry modeling system includes a controller with a microprocessor and a memory device connected to the microprocessor. An input device is also connected to the microprocessor for inputting diagnostic procedure parameters and patient information. X-ray equipment including an X-ray source and an X-ray detector array are connected to a positioning motor for movement relative to a patient's dental or orthopedic structure in response to signals from the microprocessor. The output consists of a tomographical densitometry model. A dental/orthopedic densitometry modeling method involves moving the X-ray equipment across a predetermined scan path, emitting dual-energy X-ray beams, and outputting an image color-coded to correspond to a patient's dental or orthopedic density.

X-Ray Scanners

The present application discloses an X-ray scanner having an X-ray source arranged to emit X-rays from source points through an imaging volume. The scanner may further include an array of X-ray detectors which may be arranged around the imaging volume and may be arranged to output detector signals in response to the detection of X-rays. The scanner may further include a conveyor arranged to convey an object through the imaging volume in a scan direction, and may also include at least one processor arranged to process the detector signals to produce an image data set defining an image of the object. The image may have a resolution in the scan direction that is at least 90 % as high as in one direction, and in some cases two directions, orthogonal to the scan direction.

Differential phase contrast x-ray imaging system and components

A differential phase contrast X-ray imaging system includes an X-ray illumination system, a beam splitter arranged in an optical path of the X-ray illumination system, and a detection system arranged in an optical path to detect X-rays after passing through the beam splitter.

Arrangement and method for contactless signal transmission in computed tomography systems

An arrangement for contactless transmission of electrical signals from at least two signal sources between a fixed gantry section and a gantry section rotatable about an axis of rotation of a computed tomography system is provided. The arrangement includes at least one annular electrical conductor arranged on the rotatable gantry section for emitting the electrical signals. The at least one annular electrical conductor is divided into n annular conductor segments that have no electrical connection to one another. The at least one annular electrical conductor also includes n transmission units. Each of the transmission units is electrically connected to a different annular conductor segment and feeds a different electrical signal into the annular conductor segments. At least two transmission units are electrically connected to different signal sources of the at least two signal sources.

Extremity imaging apparatus for cone beam computed tomography

An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R 1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R 2 greater than radius R 1 , radius R 2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.

Real-time tracking radiation therapy system

A real-time tracking radiotherapy system includes, therapeutic radiation irradiation device, at least two X-ray imaging devices, a target position recognizing section, a therapeutic radiation irradiation control section, each X-ray imaging device including an X-ray, an X-ray detector, and X-ray variable diaphragms, a transit region calculation section, a radiography range setting section, and a diaphragm control section. The real-time tracking radiotherapy system is capable of appropriately setting a radiography range using a computed transit region of a target or an surrogate marker and achieving a reduction in the amount of X-ray exposure.

METHOD FOR PRODUCING A SCINTILLATOR ARRAY WITH SILVER (Ag) BASED SPACERS

A method includes obtaining a plurality of the two dimensional arrays of gadolinium oxysulfide. An array has wider width non-silver based spacers () that extend between rows or columns of dixels and narrower width non-silver based spacers () that extend between the other of the rows or columns of dixels. The method further includes applying a silver coating () to at least one of a top or bottom surface of the arrays. The method further includes forming a stack by stacking the silver coated arrays, one on top of another (FIG. B), with substantially equal layers of adhesive between adjacent arrays. The method further includes slicing the stack through the wider non- silver based spacers to form two dimensional arrays of scintillator dixels () having silver based spacers () along at least one direction of the array. 1. A method , comprising:obtaining a plurality of the two dimensional arrays of gadolinium oxysulfide, wherein an array has wider width non-silver based spacers that extend between rows or columns of dixels and narrower width non-silver based spacers that extend between the other of the rows or columns of dixels;applying a silver coating to at least one of a top or bottom surface of the arrays;forming a stack by stacking the silver coated arrays, one on top of another, with substantially equal layers of adhesive between adjacent layers; andslicing the stack through the wider non-silver based spacers to form two dimensional arrays of scintillator dixels having silver based spacers along at least one direction of the array.2. The method of claim 1 , further comprising:removing residual wider width non-silver based spacer from the arrays of scintillator dixels having silver based spacers along at least one direction of the array.3. The method of claim 2 , further comprising:applying a reflective coating to a top surface of the arrays of scintillator dixels having silver based spacers along at least one direction of the array.4. The method of claim 3 , wherein ...

X-RAY IMAGING AT LOW CONTRAST AGENT CONCENTRATIONS AND/OR LOW DOSE RADIATION

The present invention relates to X-ray examinations and to the improvement of patient safety during such. More specifically the invention relates to X-ray diagnostic compositions having ultra-low concentrations of iodine. The invention further relates to methods of X-ray examinations wherein a body is administered with an X-ray diagnostic composition and irradiated with a reduced radiation dose. 1. A composition comprising an iodinated X-ray contrast agent and a pharmaceutically acceptable carrier or excipient , wherein the composition has a concentration of iodine of less than 100 mg I/ml.2. (canceled)3. A composition as claimed in wherein said X-ray contrast agent is a non-ionic iodinated monomeric claim 1 , dimeric claim 1 , trimeric claim 1 , tetrameric or pentameric compound.5. (canceled)6. A method comprisingadministering to a body a composition comprising an X-ray contrast agent and a pharmaceutically acceptable carrier or excipient, wherein said composition has a concentration of iodine of 10-170 mg I/ml,applying an X-ray radiation dose to the body wherein said radiation dose is provided by a tube voltage energy in the range of 70-140 kVp,examining said body with a diagnostic device and compiling data from said examining step.7. (canceled)8. A method as claimed in wherein said composition has a concentration of iodine of less than 150 mg I/ml.9. A method as claimed in claim 8 , wherein said contrast agent is iodinated and claim 8 , wherein said dose of radiation has an average energy spectrum substantially corresponding to the k-edge of iodine.10. (canceled)11. A method as claimed in wherein said reduced X-ray radiation dose is further provided by a tube current in the range of 5-1000 mA.12. A method as claimed in wherein said radiation dose is >30% lower than standard radiation doses.13. A method as claimed in further comprising a step of noise reduction through an advanced image reconstruction method.14. A method as claimed in wherein said noise reduction ...

C-Arm System

A C-arm system includes a first floor-mounted C-arm, a second ceiling-mounted C-arm, and a recording space for an object that is to be examined. The C-arms and the recording space are arranged in relation to each other such that recordings of the object may be made by the C-arms in two different planes. The second C-arm is configured for an orbital movement about an angular range of at least 180 degrees.

MR GAMMA HYBRID IMAGING SYSTEM

A pendant breast imaging system that operates with a MRI system and which allows a planar gamma camera breast imaging system to be positioned away from the breast area while MRI imaging is occurring, and which then moves into breast imaging position after MRI imaging is complete, and which can again be removed from the breast area to allow intervention to occur is described. It may use various collimator or scintillator materials and designs. 1. A method of imaging a breast comprising:providing a patient lying on a table, said table having a raised platform with openings for the face and breasts of the patient;providing a bore based or slab based magnetic resonance imaging (MRI) system having a radiofrequency (RF) coil, said RF coil having an opening therein;generating an MRI image of the breast of interest by placing the RF coil proximal to the breast of interest; an MRI-compatible gamma camera head arranged to be inserted through the opening in said RF coil;', 'a gamma shield; and', 'a non-MRI compatible processing system connected to the gamma camera head by cabling;, 'providing a magnetic resonance imaging (MRI) compatible gamma camera comprisinginserting the gamma camera head through the opening in the RF coil such that the gamma camera head is closer to the breast of interest than the inner diameter of the RF coil; andgenerating a gamma image of the breast of interest, characterized in that the magnetic resonance imaging and the gamma imaging are carried out sequentially and the patient is not moved or repositioned during the imaging process.2. The method according to wherein the gamma camera head comprises a collimator claim 1 , a scintillator claim 1 , a detector and an electronics assembly.3. The method according to wherein the gamma camera head is substantially planar.4. The method according to wherein the gamma camera head is connected to an articulated arm for positioning the gamma camera head.5. The method according to further comprising a breast paddle ...

Inclined phase grating structures

Grating interferometer comprising inclined phase grating structures, method for increasing the definition of phase contrast images of interferometers or in applications which are based on the Talbot effect, using inclined phase grating structures, phase gratings wherein the grating structures are positioned at angles on the substrate of the phase grating, method for producing grating structures which are positioned at angles on the substrate of the phase grating, and corresponding uses.

X-ray ct apparatus

An X-ray CT apparatus of the present invention includes an image reconstruction uJnit that, according to scanning conditions, acquires an irradiated X-ray image which is the distribution of the irradiation intensity of X-rays irradiated to an object by an X-ray irradiation unit, performs projection conversion of the irradiated X-ray image and a reconstructed image, and generates an exposure dose image, which is an image showing the distribution of an exposure dose of the object, and also calculates the exposure dose using the projection-converted reconstructed image and an irradiated X-ray image corresponding to a generation region of the reconstructed image.

X-RAY CT APPARATUS AND TUBE CURRENT DETERMINATION METHOD

In order to provide a technique of obtaining an image having high diagnosability without degrading the operability in an X-ray CT apparatus that suppresses the amount of exposure of an object by controlling the amount of radiation by setting a target image SD and determining the imaging conditions (tube current) satisfying the target image SD, there is provided an X-ray CT apparatus that controls the amount of radiation according to the size of an object in consideration of the contrast by simply inputting one image quality level as a reference of the image quality level that the operator desires. The input image quality level is set as a target image SD when scanning an object having a standard size with a standard tube voltage. 1. An X-ray CT apparatus including an X-ray tube that performs X-ray exposure while rotating around an object , an X-ray detector that is disposed opposite the X-ray tube with the object interposed therebetween and detects the amount of X-rays transmitted through the object , an image reconstruction unit configured to reconstruct a tomographic image of the object on the basis of the amount of X-rays detected by the X-ray detector , and a display unit configured to display the tomographic image , the apparatus comprising:a receiving unit that receives an image noise standard deviation, which should be satisfied when imaging is performed by a specific imaging conditions in which a standard object having a predetermined size is imaged with a specific tube voltage, as a standard image quality level;a scan planning unit that calculates a target image quality level, which is a target image noise standard deviation, using the standard image quality level, calculates a scan tube current to achieve the target image quality level, and sets imaging conditions at the time of actual imaging using the scan tube current; anda control unit that controls operations of the X-ray tube, the X-ray detector, and the image reconstruction unit according to the set ...

Thoracic diagnosis assistance system and computer readable storage medium

Provided is a thoracic diagnosis assistance system. The system includes, an imaging unit, an extracting unit, a region dividing unit, an analysis unit and a display unit. The extraction unit extracts a lung field region from the plurality of successive image frames generated by the imaging unit. The region dividing unit divides the lung field region extracted by the extraction unit into a plurality of sub-regions and correlates the sub-regions among the plurality of image frames. The analysis unit performs an analysis of the sub-regions to calculate an inspiratory feature quantity and an expiratory feature quantity and to calculate a value of a ratio of the calculated inspiratory feature quantity to expiratory feature quantity and creates a histogram of the calculated ratio value. The display unit displays the histogram.

3D DIGITAL ENDODONTICS

A method and system are described for 3D digital endodontics characterized in that 3D imaging equipment such as a CT or MRI scanner, ultrasound or the like are used to digitize the infected tooth or teeth, a 3D representation of the root canal system is extracted from the image data and visualized on a computer screen, a surgical template is designed to guide the endodontic instruments to localize the root canal(s) intra-operatively and said guide is manufactured by means of a computer driven system (e.g. milling, rapid prototyping, etc.). 152.-. (canceled)53. A computer based method for 3D digital endodontics , 3D imaging equipment being used to digitize an image of an infected tooth or teeth to thereby form image data , the method comprising:providing a user interface to extract a 3D representation of a root canal system from the image data and to visualize the root canal system on a visual display unit, wherein the 3D representation of the root canal system is expressed in a user specified coordinate system;the user interface being adapted to enable design of a surgical template to guide endodontic instruments to localize the root canal intra-operatively based on the 3D representation of the root canal system.54. The method of claim 53 , further comprising manufacturing said template by means of a computer driven system claim 53 , wherein the computer driven system is a milling claim 53 , a rapid prototyping claim 53 , or layered manufacture system.55. The method of claim 53 , wherein digital templates of a plurality of root canal instruments are provided claim 53 , allowing 2D superimposed views of instruments and canal shapes or canal cross-sections for treatment planning and instrument selection.56. The method of claim 53 , wherein location of root canal orifices is determined by extracting the root canal system from the image data.57. The method of claim 56 , wherein the step of extracting is carried out by indicating points along the axis of the root canal ...

Fail safe radiation concealment mechanism

An aspect of an embodiment of the invention, relates to an imaging capsule for scanning inside a living body with a fail-safe radiation mechanism that prevents the emission of radiation from the imaging capsule until the imaging capsule is instructed to emit radiation and power is available to activate a motor to unblock the emission of radiation. Optionally, when power is not available the imaging capsule automatically, blocks the emission of radiation.

Monochromatic x-ray methods and apparatus

According to some aspects, an x-ray apparatus for imaging and/or radiation therapy is provided, the x-ray apparatus comprises an electron source capable of generating electrons, at least one first target arranged to receive electrons from the electron source, the at least one first target comprising material that, in response to being irradiated by the electrons, emits broad spectrum x-ray radiation, at least one second target arranged to receive at least some of the broad spectrum x-ray radiation, the at least one second target comprising material that, in response to irradiation by broad spectrum x-ray radiation from the first target, emits monochromatic x-ray radiation, and at least one detector positioned to detect at least some of to the monochromatic x-ray radiation emitted from the at least one second target. According to some aspects, a relatively low cost, relatively small footprint x-ray apparatus for generating monochromatic x-ray radiation suitable for medical/clinical purposes and appropriate for use in existing medical facilities such as hospitals and/or small clinical settings is provided.

METHOD FOR DETERMINING POSITION OF ORTHODONTICS MINI-SCREW AND APPARATUS THEREOF

Disclosed herein are a method and apparatus for determining the location of an orthodontic fastener. In the method, a first location on a tooth and a second location on alveolar bone are set on a patient's medical image. Thereafter, a first rectilinear line including two points, that is, the set first and second locations, is generated. Thereafter, bone density values at the locations of the alveolar bone on the generated first rectilinear line are computed using the medical image. Finally, the location of the alveolar bone at which a first fastener is inserted is determined based on the computed bone density values. 1. A method of determining a location of an orthodontic fastener , comprising:setting, by a processor, a first location on a tooth and a second location on alveolar bone on a patient's medical image;generating, by the processor, a first rectilinear line including two points, that is, the set first and second locations;computing, by the processor, bone density values at locations of the alveolar bone on the generated first rectilinear line using the medical image; anddetermining, by the processor, a location of the alveolar bone at which a first fastener is inserted based on the computed bone density values.2. The method of claim 1 , further comprising displaying claim 1 , by the processor claim 1 , the computed bone density values at the locations of the alveolar bone on a screen on which the medical image is displayed.3. The method of claim 2 , wherein displaying further comprises claim 2 , when a third location on the first rectilinear line is selected in response to user input claim 2 , displaying a bone density value at the selected third location in synchronization of the third location.4. The method of claim 1 , wherein determining further comprises determining a location having a maximum one of the bone density values to be the location at which the first fastener will be inserted.5. The method of claim 1 , wherein determining further comprises ...

Estimation of distances and size of lesions in the colon with an imaging capsule

A method of estimating distances in a colon of a subject, including: orally administering to a subject a contrast agent, orally administering an imaging capsule to the subject, emitting radiation from the imaging capsule at a location in the colon, detecting photons that are returned from an interaction of the radiation with an inner wall of the colon and contents of the colon, summating the detected photons with energies corresponding to X-ray florescence interactions to form a first count, summating the detected photons with energies corresponding to Compton back-scattering interactions to form a second count, determining the distance from the imaging capsule to the inner wall of the colon and a concentration of the contrast agent at the location of the imaging capsule in the colon using the values of the first count and the second count.

MULTI-X-RAY GENERATING APPARATUS AND X-RAY IMAGING APPARATUS

A multi-X-ray generating apparatus which has a plurality of electron sources arranged two-dimensionally and targets arranged at positions opposite to the electron sources includes a multi-electron source which includes a plurality of electron sources and outputs electrons from driven electron sources by selectively driving a plurality of electron sources in accordance with supplied driving signals, and a target unit which includes a plurality of targets which generate X-rays in accordance with irradiation of electrons output from the multi-electron source and outputs X-rays with different radiation qualities in accordance with the generation locations of X-rays. The generation locations and radiation qualities of X-rays from the target unit are controlled by selectively driving the electron sources of the multi-electron source. 1. An X-ray imaging apparatus for mammography comprising:a multi-X-ray generating apparatus that generates X-rays at different angles to an object so that tomography is performed; andan X-ray detector that generates an electric signal in accordance with the dose of X-rays passing through the object, a multi-electron source that includes a plurality of electron emitting elements and that emits electrons from a selected electron emitting element among said plurality of electron emitting elements in accordance with a driving signal; and', 'a plurality of targets arranged opposite to said plurality of electron emitting elements and each of which generates X-rays in response to irradiation of electrons emitted from a corresponding one of said electron emitting elements., 'wherein said multi-X-ray generating apparatus comprises2. The apparatus according to claim 1 , wherein a target unit that includes said target is connected to at least one of a first shield plate and a second shield plate claim 1 , said first and second shield plates exposing at least a portion of each of said plurality of targets.3. The apparatus according to claim 2 , wherein ...

Dental x-ray apparatus and associated method

A dental X-ray apparatus of the conical-beam digitized-tomography type includes: an X-ray generator emitting an X-ray beam towards an object and provided with a collimation element for collimating the emitted beam; an X-ray sensor having an active surface arranged opposite the generator; wherein the generator and the sensor can rotate simultaneously about a rotation axis, the sensor being oriented so that a longitudinal axis extending from the generator to the sensor through the rotation axis is perpendicular to the active surface of the sensor, the center of the sensor being transversally offset relative to the projection of the axis on the sensor's active surface, the arrangement of the collimation element and the sensor thus offset defining that the collimated beam illuminates the sensor's active surface while leaving a peripheral area of the surface that is faintly illuminated by the collimated beam relative to the rest of the active surface.

METHOD AND SYSTEM FOR RESTORING BODY PARTS

The present relates to a method and system for determining the position and orientation of implants located in a body part of a patient. The method and system comprise determining voxels having an intensity value corresponding to implants in a three-dimensional radiographic representation of the body part. The method and system further comprise generating multiple random virtual implants, providing a score for each virtual implant, until obtaining a score that identifies implants. The score is based on a number of voxels having an intensity value corresponding to implants contained in each generated virtual implant. And the method and system comprise determining, based on the score of virtual implants, the position and orientation of the implants located in the body part. 1. A system for determining position and orientation of implants located in a body part of a patient , the system comprising: determining in a three-dimensional radiographic representation of the body part an intensity value of voxels representing the implants;', 'generating multiple random virtual implants and providing a score for each virtual implant, the score being based on a number of voxels contained in each generated virtual implant; and', 'determining position and orientation of the implants in the three-dimensional radiographic representation of the body part based on the score of each virtual implant., 'a processing unit for2. The system of claim 1 , wherein the processing unit generates multiple random virtual implants in various combinations of location and position.3. The system of claim 1 , wherein the processing unit further:selects a region of the three-dimensional radiographic representation to be searched for implants; andgenerating the random virtual implants is performed in the selected region.4. The system of claim 1 , wherein the processing unit further:generates data to be used to design a medical model adapted to the implants located in the body part.5. The system of claim ...

Method and system unit for stereoscopic x-ray imaging

A method for stereoscopic x-ray imaging by a stereoscopic x-ray tube and by an x-ray radiation detector is provided. The x-ray radiation detector has a buffer. The stereoscopic x-ray tube has two x-ray beam sources disposed a short distance from one another. 2D image datasets are acquired at relatively short intervals one after the other, which have good quality.

Grating for phase contrast imaging

The present invention relates to foil-gratings for X-ray differential phase-contrast imaging, a detector arrangement and an X-ray imaging system for generating phase-contrast images of an object and a method of producing a foil-grating. In order to provide gratings with a high aspect ratio, a foil-grating ( 40 ) for X-ray differential phase-contrast imaging is provided with a first foil ( 42 ) of X-ray absorbing material; and at least a second foil ( 44 ) of X-ray absorbing material. The at least two foils each comprise a plurality of X-ray absorbing stripes spaced from each other by X-ray transparent apertures, wherein the first foil comprises a first plurality ( 46 ) of first stripes ( 48 ) with a first width w 1 ( 50 ), and a first plurality ( 52 ) of first apertures ( 54 ) with a first opening width w O1 ( 56 ) arranged periodically with a first pitch p 1 ( 58 ), and wherein the second foil comprises a second plurality ( 60 ) of second stripes ( 62 ) with a second width w 2 ( 64 ), and a second plurality ( 66 ) of second apertures ( 68 ) with a second opening width w O2 ( 70 ) arranged periodically with a second pitch p 2 ( 72 ). The at least two foils are arranged displaced to each other such that the second stripes are positioned in front of the first apertures such that for the passage of X-ray radiation a plurality ( 74 ) of resulting slits ( 76 ) is provided with a resulting slit width W R ( 78 ) that is smaller than the first w O1 and the second opening width w O2 . The at least two foils are fixedly attached to each other.

X-ray imaging apparatus

Provided is an X-ray imaging apparatus, including: an X-ray generation unit for radiating an X-ray; a control unit for controlling the X-ray generation unit; an X-ray reception unit; a storing unit capable of storing the X-ray reception unit for receiving the X-ray radiated from the X-ray generation unit; and a U-shaped arm unit for holding the X-ray generation unit, the control unit, and the storing unit.

POST-PATIENT DYNAMIC FILTER FOR COMPUTED TOMOGRAPHY (CT)

An imaging system includes a radiation source () configured to rotate around an examination region about a z-axis and having a focal spot that emits a radiation beam that traverses the examination region. The system further includes a radiation sensitive detector array () with a plurality of detector pixels that detects radiation traversing the examination region and generates projection data indicative of the detected radiation. The system further includes a dynamic post-patient filter () including one or more filter segments (). The filter is configured to selectively and dynamically move in front of the detector array between the detector array and the examination region and into and out of a path of the radiation beam illuminating the detector pixels during scanning an object or subject based on a shape of the object or subject, thereby filtering unattenuated radiation and radiation traversing a periphery of the object or subject. 1. An imaging system , comprising:a radiation source configured to rotate around an examination region about a z-axis includes a focal spot that emits a radiation beam that traverses the examination region;a radiation sensitive detector array includes a plurality of detector pixels that detects radiation traversing the examination region and generates projection data indicative of the detected radiation; anda dynamic post-patient filter including one or more filter segments configured to selectively and dynamically move in front of the detector array between the detector array and the examination region and into and out of a path of the radiation beam illuminating the detector pixels during scanning an object or subject based on a shape of the object or subject, thereby filtering unattenuated radiation and radiation traversing a periphery of the object or subject.2. The system of claim 1 , further comprising:at least one motor for moving the one or more filter segments; anda controller that controls the motor to dynamically move the ...

Method and System for Controlling X-Ray Focal Spot Characteristics for Tomosynthesis and Mammography Imaging

An x-ray tube is described that includes components for increasing x-ray image clarity in the presence of a moving x-ray source by modifying focal spot characteristics, including focal spot size and focal spot position. In a first arrangement a static focal spot is moved in a direction contrary to the movement of the x-ray source so that an effective focal spot position is essentially fixed in space relative to one of the imaged object and/or detector during a tomosynthesis exposure. In a second arrangement, the size of the static focal spot is increased, and the resulting increase in tube current reduces the exposure time and concomitant blur effect. The methods may be used alone or in combination; for example an x-ray tube with a larger, moveable static focal spot will result in a system that fully utilizes the x-ray tube generator, provides a high quality image with reduced blur and, due to the decrease in exposure time, may scan the patient more quickly.

Method and system for non-invasive imaging of a target region

Embodiments of systems, methods and non-transitory computer readable media for imaging are presented. Preliminary image data corresponding to a first FOV of a subject at a first resolution is acquired using an imaging system including one or more radiation sources and at least one hybrid detector, specifically using at least one section of the hybrid detector having the first resolution. The target ROI is identified using the preliminary image data. Further, the subject is positioned to align the target ROI along a designated axis. Additionally, parameters associated with the sources, the hybrid detector and/or an imaging system gantry are configured for acquiring target image data at a second resolution greater than the first resolution using at least one section of the hybrid detector having the second resolution. Further, one or more images corresponding to at least the target ROI are reconstructed using the target and/or the preliminary image data.

X-ray CT Photographic Apparatus

An X-ray CT photographic apparatus including: a beam shaping mechanism that regulates an irradiation range of an X-ray generated from an X-ray generator and shapes the X-ray into an X-ray cone beam; and a main body controller that changes a read region, where an X-ray detection signal is read in the X-ray detector, according to the irradiation range of the X-ray cone beam. The main body controller changes the irradiation range of the X-ray cone beam to an x-axis direction during an X-ray CT photography such that only a set CT photographic region is irradiated with the X-ray cone beam according to the set CT photographic region input through a CT photographic region setting unit. The main body controller changes a read region in an X-ray detector with respect to the x-axis direction in a detection surface of the X-ray detector during the X-ray CT photography.

X-ray generator, x-ray imaging apparatus, and control methods therefor

In an X-ray generator which includes an electron beam generating unit which has a plurality of electron emitters and generates an electron beam corresponding to driven electron emitters, and a target electrode which generates X-rays with the irradiation position of an electron beam generated by the electron beam generating unit being an X-ray focus, the X-ray focus shape formed by a set of X-ray focuses on the target electrode is controlled by individually controlling driving of the plurality of electron emitters.

Digital detector

An extra-oral dental imaging apparatus for obtaining an image from a patient has a radiation source and a digital imaging sensor that provides, for each of a number of image pixels, at least a first digital value according to a count of received photons that exceed at least a first energy threshold. A mount supports the radiation source and the digital imaging sensor on opposite sides of the patient's head. There can be a computer in signal communication with the digital imaging sensor for acquiring one or more two-dimensional images.

System and method for wide cone helical image reconstruction

A tomographic system includes a gantry having an opening for receiving an object to be scanned, a radiation source, a detector positioned to receive radiation from the source that passes through the object, and a computer programmed to acquire a plurality of helical projection datasets of the object, reconstruct a first image using the acquired plurality of helical projection datasets and using a first reconstruction algorithm, reconstruct a second image using the acquired plurality of helical projection datasets and using a second reconstruction algorithm that is different from the first reconstruction algorithm, extract frequency components from each of the first and second images, sum the frequency components from each of the first and second images, and inverse transform the sum of the frequency components to generate a final image.

Non-rotational computerized tomography system

A non-rotational CT system according to the present invention comprises: a plurality of X-ray generation units which are radially arranged by being spaced at certain intervals around an inspected object, and in which position correcting sensors are equipped on one side thereof; a plurality of X-ray detection units which are arranged in separated spaces between the X-ray generation units, are provided alternately with the X-ray generation units, and in which position correcting sensors are equipped on one side thereof; a control unit which receives signals from the position correcting sensors equipped in the X-ray generation units and the X-ray detection units, and adjusts the positions of each of the X-ray generation units and the X-ray detection units which face each other to precisely correspond with each other; a data processing unit which stores two-dimensional X-ray images obtained from the X-ray detection units, and applies an image interpolation technique to calculate two-dimensional X-ray images between two directions; and an image processing unit which converts data of the data processing unit into CT image data.

DENTAL SURFACE MODELS

To create a digital surface model of an intra-oral anatomy, a recess or a hole in an impression material having a predetermined shape and size is scanned. The scanning results and information on the predetermined shape and size are used for determining a threshold value representing interface between the impression material and another material. The threshold value is then used in generating the digital surface model from CT scanning data of an impression of an intra-oral anatomy on said impression material. 1. A method for generating a digital surface model depicting an interface between an impression material and another material from volumetric data including image data of a physical impression of an intra-oral anatomy , the method comprising:acquiring information defining predetermined dimensions of a recess or a hole in the impression material;acquiring CT scanning results of said recess or hole in the impression material;using said information defining the predetermined dimensions and said CT scanning results of said recess or hole to determine a threshold value for an interface between the impression material and the other material;acquiring CT scanning results of the physical impression of an intra-oral anatomy, the impression being made in the same impression material as the recess or hole; andusing said threshold value in generating a surface of said impression of an intra-oral anatomy from said scanning results of said impression of an intra-oral anatomy.2. A method as claimed in claim 1 , further comprising:creating the recess or the hole in the impression material by means of a calibration tool having the predetermined dimensions.3. A method as claimed in claim 1 , wherein determining said threshold value includes:determining location and orientation of said recess or hole in said scanning results of said recess or hole;using the predetermined dimensions of said recess or hole and the determined location and orientation thereof to identify from the CT ...

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.

Method and apparatus for filtering radio-frequency electromagnetic beams and irradiation apparatus or device for irradiating an object

A method and an apparatus for filtering radio-frequency electromagnetic beams, in particular x-rays, include a fluid container containing a ferrofluid which at least partially absorbs the electromagnetic beams. A distribution of the ferrofluid within the fluid container can be varied by using an applied magnetic gradient field. An irradiation apparatus and a device for irradiating an object are also provided.

PORTABLE DUAL-ENERGY RADIOGRAPHIC X-RAY PERIHPHERAL BONE DENSITY AND IMAGING SYSTEMS AND METHODS

Devices, tools, systems and methods for X-ray bone density measurement and imaging for radiography, fluoroscopy and related procedures. Portable, efficient peripheral bone density measurement and/or high resolution imaging and/or small field digital radiography of bone and other tissue, including tissue in the peripheral skeletal system, such as the arm, forearm, leg, hand and/or foot. 1. A portable , dual-energy radiographic x-ray imaging and bone density measuring system , comprising:an X-ray source configured to emit an X-ray beam through a filter positioning mechanism, the filter positioning mechanism comprising a high energy filter, a low energy filter, and a shutter configured to block transmission of the X-ray beam;an X-ray imaging detector;a housing positioning the X-ray source at a distance from the X-ray beam detector, wherein the housing is configured for positioning a forearm between the X-ray source and the X-ray beam detector;an embedded system configured to activate the X-ray source and to control the position of the filter positioning mechanism and imaging data acquisition.2. The system of claim 1 , wherein the X-ray source is active for at most 2 seconds per exposure.3. The system of claim 1 , wherein the high energy filter provides a high energy component above 40-50 kV for transmission through the filter positioning mechanism.4. The system of claim 1 , wherein the high energy filter comprises Copper and at least one of the group consisting of Tin and Rhodium.5. The system of claim 1 , wherein the low energy filter limits transmission of energy below 40-50 kV through the filter positioning mechanism.6. The system of claim 1 , wherein the low energy filter comprises Aluminum and at least one type of material having a K-edge absorption at least 40 kV.7. The system of claim 1 , wherein the low energy filter comprises at least one type of material having a K-edge absorption of at least 40 kV is selected from the group consisting of Cerium claim 1 , ...

CATHETER COMPRISING CAPACITIVE MICROMACHINED ULTRASONIC TRANSDUCERS WITH AN ADJUSTABLE FOCUS

A catheter () comprising: a shaft with distal () and proximal ends (),wherein the distal end comprises at least one array of capacitive micromachined ultrasound transducers ( ) with an adjustable focus for controllably heating a target zone (); and a connector () at the proximal end for supplying the at least one array of capacitive micromachined ultrasound transducers with electrical power and for controlling the adjustable focus. 1. A catheter comprising:a shaft with distal and proximal ends, wherein the distal end comprises a transducer module with at least one array of capacitive micromachined ultrasound transducers with an adjustable focus for controllably heating a target zone; anda connector at the proximal end for supplying the at least one array of capacitive micromachined ultrasound transducers with electrical power and for controlling the adjustable focus wherein the transducer module is at least partly flexible.2. The catheter as claimed in claim 1 , wherein the at least one array of capacitive micromachined ultrasound transducers is disposed on a flexible material.3. The catheter of claim 1 , wherein the transducer module comprises at least two arrays of capacitive micromachined ultrasound transducers claim 1 , and wherein the catheter further comprises a flexible element between the at least two capacitive micro machined transducers.4. The catheter of claim 2 , wherein the catheter further comprises a mechanical actuator for at least partially adjusting the adjustable focus by deforming the transducer module.5. The catheter of claim 1 , wherein the distal end has a length extension claim 1 , and wherein at least a portion of at least one array of capacitive micromachined ultrasound transducers is orientated such that the target zone is located adjacent to the length extension.6. The catheter of claim 5 , wherein at least some of the at least one array of capacitive micromachined ultrasound transducers form a ring around the shaft and orientated along a ...

Method for generating a contrast medium-assisted x-ray image and x-ray system

A method is disclosed for generating at least one x-ray image of a patient having incorporated contrast medium, using x-rays having an energy spectrum and an x-ray detector. The energy spectrum is modified by at least one first filter arranged in the beam path in front of the patient, the patient absorbing a dose in order to generate detector data for the x-ray image and the x-ray image having a CNR value which represents the ratio of the maximum contrast in the image to the noise. The energy spectrum and contrast medium are matched to each other, taking into account the thickness of the patient to be x-rayed, in such a way that an optimization criterion which is taken from an x-ray image that is generated or simulated by way of trials is maximized. Furthermore, an x-ray system is also disclosed.

FAIL-SAFE RADIATION CONCEALMENT MECHANISMS FOR IMAGING CAPSULES

An imaging capsule with a fail-safe radiation mechanism includes a first rotatable disk with a radiation source mounted thereon and having a collimator structure allowing emission of radiation from radiation source from a few locations on the first disk. A second rotatable disk surrounds the first disk, is rotatable relative to first disk, and includes areas that block radiation and areas that are transparent to emission of radiation. In a rest position, second disk is situated relative to first disk such that areas that block radiation are blocking the emission of radiation from the locations on the circumference of the disk that allow the emission of radiation. A motor is activated to rotate one of the disks and allow emission of radiation. A connector is configured to automatically return first disk and second disk to the rest position when the motor is deactivated. 1. An imaging capsule with a fail-safe radiation mechanism , comprising:a radiation source;a first rotatable disk with the radiation source mounted thereon, the first rotatable disk having a collimator structure allowing the emission of radiation from the radiation source substantially only from a few locations on the circumference of the first disk;a second rotatable disk surrounding the circumference of the first rotatable disk and configured to rotate relative to the first rotatable disk, the second rotatable disk including areas that block radiation and areas that are transparent to the emission of radiation, wherein in a rest position the second rotatable disk is situated relative to the first rotatable disk such that the areas that block radiation are blocking the emission of radiation from the few locations on the circumference of the disk that allow the emission of radiation;a connector assembly configured to couple the first rotatable disk to the second rotatable disk; anda motor for rotating the one of the rotatable disks relative to the other of the rotatable disks,wherein the first ...

System and method for detecting materials or disease states using multi-energy computed tomography

The disclosed embodiments relate to characterizing or quantifying an element or composition of interest within an imaged volume. In accordance with one embodiment, high and low energy images are acquired of a volume of interest using a polychromatic emission source. The high and low energy images are processed to generate monochromatic images. Based on the observed attenuation within the monochromatic images, one or more elements or compositions of interest are characterized within the imaged volume.

Method and apparatus for correcting artifacts during generation of x-ray images, in particular computed tomography, or radiography by means of temporal modulation of primary radiation

Artifacts caused by scattered radiation when generating X-ray images of objects are corrected using a temporally alterable modulation of the primary radiation. A respective set of originally amplitude-modulated modulation projections of the object is generated and a respective scattered image allocated to the respective modulation projections is calculated. The method is particularly suitable for fast CT scans.

Inverse geometry volume computed tomography systems

The present invention pertains to an apparatus and method for inverse geometry volume computed tomography medical imaging of a human patient. A plurality of stationary x-ray sources for producing x-ray radiation are used. A rotating collimator located between the plurality of x-ray sources and the human patient is also used. A rotating detector can also be used.

COMPUTED TOMOGRAPHY (CT) IMAGE ACQUISITION DEVICE AND CT SCAN IMAGING SYSTEM

The disclosure provides a Computed Tomography (CT) image acquisition device and a CT scan imaging system. The CT scan imaging system includes: an image acquisition device, which specifically includes a first image acquisition device (A, B) and a second image acquisition device (A, B) that are perpendicular to each other, wherein the first image acquisition device (A, B) or the second image acquisition device (A, B) includes: an X-ray tube (A, A), which is used for emitting X-rays, and a detector (B, B), which is arranged opposite to the X-ray tube in the vertical direction and is used for receiving the X-rays and obtaining projection data according to the X-rays; and an image processing device (), which is used for acquiring a three-dimensional image through reconstruction of the projection data, wherein the three-dimensional image includes one or more tomographic images. 1. A Computed Tomography (CT) image acquisition device , comprising: a first X-ray tube, configured to emit horizontal X-rays; and', 'a first detector, arranged opposite to the first X-ray tube in the vertical direction and configured to receive the horizontal X-rays and obtain projection data according to the horizontal X-rays;, 'a first image acquisition device, comprising a second X-ray tube, configured to emit vertical X-rays; and', 'a second detector, arranged opposite to the second X-ray tube in the vertical direction and configured to receive the vertical X-rays and obtain projection data according to the vertical X-rays., 'a second image acquisition device, comprising2. The device according to claim 1 , further comprising:a G-shaped beam, of which the inside wall is mounted with the first image acquisition device and the second image acquisition device, wherein the G-shaped beam is an annular body with a quarter of opening, and the orthocentre where the first image acquisition device and the second image acquisition device are perpendicular to each other is overlapped with the centre of the ...

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. 1. A collimator for a computed x-ray tomography imaging device , comprising a first grating and a second grating positioned on opposing sides of a primary radiation delivery window , the first and second gratings being part of separate first and second leaves , each of the first and second gratings comprising a plurality of attenuating members with a plurality of secondary radiation delivery windows extending between adjacent attenuating members of the first grating and the second grating , respectively , and wherein the first and second gratings are each adapted to receive x-rays from a single x-ray source.2. The collimator of claim 1 , wherein a width of each secondary windows is less than a width of the primary window.3. The collimator of claim 1 , wherein a total area of each of the plurality of secondary windows is less than a total area of the primary window.4. The collimator of claim 1 , wherein a width of each secondary window is proportional to a distance between the secondary window and the primary window.5. The collimator of claim 4 , wherein the width of each secondary window is linearly proportional to the distance between the secondary window and the primary window.6. The collimator of claim 1 , wherein a width of each attenuating member is proportional to a distance between the attenuating member and the primary window.7. The collimator of claim 6 , wherein the width of each attenuating member is linearly proportional to the distance between the attenuating member and the primary window.8. The collimator of claim 1 , wherein the secondary windows comprise open passages extending through ...

APPARATUS AND METHOD FOR X-RAY-BASED BREAST IMAGING

The invention provides x-ray-based breast imaging systems and related methods that are, for example, applicable to contrast enhanced digital mammography and contrast enhanced digital breast tomosynthesis and allow fast, cost-effective and accurate x-ray imaging. 2. The system of claim 1 , wherein the x-ray source and the x-ray detector remain stationary when taking the one or more images of the right breast and remain stationary when taking the one or more images of the left breast.3. The system of claim 2 , useful for radiographic or mammographic imaging without x-ray contrast agent administered to the subject prior to imaging.4. The system of claim 2 , useful for radiographic or mammographic imaging with x-ray contrast agent administered to the subject prior to imaging.5. The system of claim 1 , wherein the x-ray detector remains stationary and the x-ray source travels along a pre-defined trajectory when taking the one or more images of the right breast and the x-ray detector remains stationary and the x-ray source travels along a pre-defined trajectory when taking the one or more images of the left breast.6. The system of claim 5 , useful for tomographic imaging with x-ray contrast agent administered to the patient prior to imaging.7. The system of claim 5 , useful for tomographic imaging without x-ray contrast agent administered to the patient prior to imaging.8. The system of claim 1 , configured to allow imaging of the subject to take place while the subject is in a prone posture.9. The system of claim 1 , configured to allow imaging of the subject to take place while the subject is in an upright posture.10. The system of claim 1 , wherein the assembly of the x-ray source and the x-ray detector is rotatable in synchrony around an axis located substantially mid-way between the right and left breasts and normal to the subject's chest.12. The system of claim 11 , configured to allow imaging of the subject while the subject is in a prone posture.13. The system of ...

AUTOMATIC EXPOSURE CONTROL SETUP

A method for exposure control setup for a volume radiographic imaging apparatus obtains a reconstructed image volume of a subject acquired from the imaging apparatus using a set of x-ray technique settings. An image slice from the reconstructed image volume displays in at least a first rendering having a first corresponding noise factor and a second rendering having a second corresponding noise factor, different from the first noise factor. An operator instruction selects one of the at least first and second renderings and stores the corresponding noise factor for the set of x-ray technique settings. An automatic exposure control of the imaging apparatus is configured according to the stored noise factor. 1. A method for exposure control setup for a volume radiographic imaging apparatus , the method comprising:reconstructing a volume image of a subject based on a series of images of the subject captured by the volume radiographic imaging apparatus;displaying side-by-side a plurality of radiographic images of a same image slice from the reconstructed volume image of the subject, a first one of the displayed radiographic images comprising a fixed noise factor and a second one of the displayed radiographic images comprising a variable noise factor, and simultaneously displaying a user interface for adjusting the variable noise factor of the second one of the displayed radiographic images; andin response to an operator selection of the second one of the displayed radiographic images having a corresponding noise factor, determining an automatic exposure control for the volume radiographic imaging apparatus based on the corresponding noise factor.2. The method of claim 1 , further comprising configuring the volume radiographic imaging apparatus with the determined automatic exposure control.3. The method of claim 1 , further comprising reconstructing a volume image of the subject using a series of projection images acquired by the volume radiographic imaging apparatus ...

COMPUTER TOMOGRAPH

A computer tomograph () for mammographic x-ray imaging includes a MBFEX tube () and a flat-bed x-ray detector (). Cathodes () are arranged in a fixed manner in rows in the MBFEX tube (), the cathodes () being provided for the field emission of electrons. Geometry, radiation density and wavelength range of an x-ray beam (b) can be set. The MBFEX tube () is movable parallel (z) to the flat-bed x-ray detector (). The flat bed x-ray detector () includes a moveable x-ray screen (), the opening of which can be set. Using the x-ray screen (), an imaging area (A) on the detector surface (D) of the flat-bed x-ray detector () can be selected and moved. Compared to conventional computer tomographs having rotating x-ray components, the computer tomograph () has a lighter and more compact design, with which a particularly small focal spot size is achieved. 1. A computer tomograph for mammographic x-ray imaging , comprising: a MBFEX tube and a flat-bed x-ray detector , wherein a plurality of cathodes is arranged in a fixed manner in rows in the MBFEX tube , the cathodes being provided for field emission of electrons , and geometry , radiation density and wavelength range of an x-ray beam (b) are set , the MBFEX tube are movable parallel to the flat-bed x-ray detector , the flat bed x-ray detector comprising a moveable x-ray screen , the opening of the moveable x-ray screen is set , and , using the x-ray screen , an imaging area on a detector surface of the flat-bed x-ray detector is selectable and moveable.2. The computer tomograph according to claim 1 , wherein the cathodes contain carbon nanotubes.3. The computer tomograph according to claim 1 , wherein the cathodes contain nanorods for emitting electrons claim 1 , which contain a substance selected from a group of substances consisting of metal oxides claim 1 , metal sulfides claim 1 , nitrides claim 1 , carbides and silicon.4. The computer tomograph according to claim 1 , wherein the MBFEX tube has a grid device arranged in a ...

Variable distance imaging

A system for imaging includes a gantry movable relative to a subject. A source is configured to emit radiation during an imaging procedure. A detector is configured to receive attenuated radiation from the source during an imaging procedure, at least one of the source and the detector movably secured to the gantry by an adjustable joint. An imaging controller is operably connected to at least the gantry and to the adjustable joint, wherein the gantry controller receives a priori patient information and imaging system geometry information, the imaging controller determines an imaging geometry and operates the gantry and the adjustable joint to vary a source to image-receptor distance (SID) according to the imaging geometry.

Flexible radiopaque apron

A radiopaque apron configured to overlap an opening of a radiographic imaging apparatus. The apron is a two-layered radiopaque flexible material that extends over the opening. A first layer is large enough to extend across the imaging opening. The second layer has an apron opening smaller than the imaging opening and is positioned between the first layer and the apparatus.

RADIOGRAPHIC APPARATUS

A radiography apparatus is provided in which delays in it do not occur due to the influence of preliminary preparation of a radiation detector. The FPD receives a signal from an X-ray tube control unit and then completes preliminary preparation for the detection of radiation during accelerated movement of an X-ray tube or the FPD That is, the accelerated movement of the X-ray tube or the FPD and the preliminary preparation for the detection of radiation are carried out simultaneously. This enables imaging to be started immediately after the start of constant speed movement of the X-ray tube or the FPD without having to wait for constant speed movement thereof to start preliminary preparation of the FPD as in conventional apparatuses. As a result, delays in imaging do not affect the radiation image. 1. A radiography apparatus , comprising:a radiation source that irradiates a radiation to a subject;a detection unit that detects said radiation transmitted through said subject;an input unit that allows an operator to input a directive to said radiographic apparatus to start imaging;a shifting unit that first acceleration-shifts said radiation source under suspension or said detection unit under suspension and then transfers into a constant-speed-shifting when a directive of a start imaging start is input to said input unit; anda radiation source control unit that sends out a signal, which indicates that said radiation source is ready, to irradiate said radiation, to said detection unit when said directive of start imaging is input to said input unit;wherein said detection unit transfers into the radiation detectable state promptly after said radiation source or said detection unit transfers into constant-speed-shifting by starting a pre-preparation for radiation detection while said radiation source, or said detection unit is acceleration-shifting,2. A radiography apparatus , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the radiography apparatus ...

BREAST IMAGING APPARATUS, METHOD OF CONTROLLING BREAST IMAGING APPARATUS, AND STORAGE MEDIUM

A breast imaging apparatus includes a radiation imaging unit capable of performing mammogram imaging and CT imaging. The breast imaging apparatus includes: a cover detection unit configured to detect a state of a cover that separates an object from the radiation imaging unit; and a control unit configured to switch between the mammogram imaging and the CT imaging based on the state. 1. A breast imaging apparatus including a radiation imaging unit capable of performing mammogram imaging and CT imaging , comprising:a cover detection unit configured to detect a state of a cover that separates an object from the radiation imaging unit; anda control unit configured to switch between the mammogram imaging and the CT imaging based on the state.2. The apparatus according to claim 1 , wherein the cover detection unit detects one of presence/absence of mounting of the cover and a position of the cover as the state of the cover.3. The apparatus according to claim 1 , wherein based on a detection result of the cover detection unit claim 1 , the control unitcontrols the CT imaging if the cover is mounted, andcontrols the mammogram imaging if the cover is not mounted.4. The apparatus according to claim 1 , further comprising a selection unit configured to select an imaging type claim 1 ,wherein the control unit switches between the mammogram imaging and the CT imaging based on the selected imaging type.5. The apparatus according to claim 1 , wherein the radiation imaging unit comprises:a radiation generation unit configured to generate radiation;a radiation detection unit configured to detect the radiation; anda rotation unit capable of rotating the radiation generation unit and the radiation detection unit in a state in which the radiation generation unit and the radiation detection unit face each other.6. The apparatus according to claim 5 , further comprising:an object detection unit configured to detect an object in front of the cover; anda pressing plate detection unit ...

Radiation ct apparatus and method of controlling the same

A radiation CT apparatus includes a rotation unit configured to rotate about a rotation axis, a radiation generation unit and a radiation detector which are fixed on either side of the rotation axis in the rotation unit, and a gantry cover containing the radiation generation unit and the radiation detector and including a breast insert portion configured to insert a breast of an object. An opening portion that can be opened and closed is placed on the gantry cover of the radiation CT apparatus. The radiation generation unit and the radiation detector are stopped to form a space that allows a user to access the breast insert portion from the opening portion.

RADIATION IMAGING APPARATUS AND CONTROL METHOD AND PROGRAM OF THE APPARATUS

An energy control unit continuously adjusts energy of radiations in one shot emitted by an X-ray irradiation unit. An X-ray detection unit generates a plurality of image data pieces in one shot by detecting the radiations whose energy is continuously adjusted and transmitted through a subject. An image classification unit classifies the plurality of image data pieces generated by the X-ray detection unit into image data generated by the radiations of a high energy side and image data generated by the radiations of a low energy side. An image subtraction unit performs weighting and subtraction on the image data generated by the radiations of the high energy side and the image data generated by the radiations of the low energy side. 1. An apparatus for radiation imaging comprising:an irradiation unit configured to irradiate an object with radiations that tube voltage of the irradiation unit is continuously changed in one shot;a radiation detector configured to detect radiations, which are irradiated by the irradiation unit, in one shot through the object;an obtaining unit configured to obtain image data from the radiation detector; anda classification unit configured to classify image data into a first group and a second group, wherein image data corresponding to a low energy side is classified into the first group, and image data corresponding to a high energy side is classified into the second group based on an elapsed time corresponding to radiations irradiated by the irradiation unit.2. The radiation imaging apparatus according to claim 1 , further comprising:a subtraction unit configured to perform subtraction on the image data obtained by the radiations of the high energy side and the image data obtained by the radiations of the low energy side.3. The radiation imaging apparatus according to claim 1 , further comprising:a control unit configured to continuously adjust energy of the radiations in one shot irradiated by the irradiation unit.4. The radiation ...

BREAST IMAGING APPARATUS, METHOD OF BREAST IMAGING APPARATUS, AND STORAGE MEDIUM

A breast imaging apparatus, capable of performing mammogram imaging and CT imaging by a radiation imaging unit that holds a radiation generation unit and a radiation detection unit configured to detect radiation irradiation from the radiation generation unit such that the radiation generation unit and the radiation detection unit face each other, includes: a housing elevating unit configured to vertically move a housing support unit configured to support the radiation imaging unit; and a control unit configured to control the vertical movement of the housing elevating unit based on an imaging type that is one of mammogram imaging and CT imaging. 1. A breast imaging apparatus capable of performing mammogram imaging and CT imaging by a radiation imaging unit that holds a radiation generation unit and a radiation detection unit configured to detect radiation irradiation from the radiation generation unit such that the radiation generation unit and the radiation detection unit face each other , comprising:a housing elevating unit configured to vertically move a housing support unit configured to support the radiation imaging unit; anda control unit configured to control the vertical movement of the housing elevating unit based on an imaging type that is one of mammogram imaging and CT imaging.2. The apparatus according to claim 1 , further comprising:an elevating unit configured to vertically move a detector of the radiation detection unit; anda selection unit configured to select the imaging type that is one of the mammogram imaging and the CT imaging,wherein the control unit controls the vertical movements of the housing elevating unit and the elevating unit based on the imaging type.3. The apparatus according to claim 2 , wherein the control unit moves the elevating unit based on the imaging type so as to change a distance between the radiation generation unit and the radiation detection unit.4. The apparatus according to claim 1 , wherein the control unit moves the ...

SYSTEM AND METHOD FOR MEDICAL IMAGING

The present disclosure provides a system and method for generating medical images. The method utilizes a novel algorithm to co-register Cone-Beam Computed Tomography (CBCT) volumes and additional imaging modalities, such as optical or RGB-D images. 1. A medical imaging apparatus comprising:a) a Cone-Beam Computed Tomography (CBCT) imaging modality having an X-ray source and an X-ray detector configured to generate a series of image data for generation of a series of volumetric images, each image covering an anatomic area;b) an auxiliary imaging modality configured to generate a series of auxiliary images; andc) a processor having instructions to generate a global volumetric image based on the volumetric images and the auxiliary images.2. The apparatus of claim 1 , wherein the processor is configured to perform an image registration process comprising co-registering the volumetric images and the auxiliary images claim 1 , wherein co-registration includes stitching of non-overlapping volumetric images to generate the global volumetric image.3. The apparatus of claim 1 , wherein the auxiliary imaging modality is an optical imaging modality configured to generate optical images.4. The apparatus of claim 1 , wherein the auxiliary imaging modality is a depth imaging modality.5. The apparatus of claim 1 , wherein the depth imaging modality is a RGB-D camera.6. The apparatus of claim 1 , wherein the imaging modalities are housed in a C-arm device.7. The apparatus of claim 6 , wherein the C-arm is configured to automatically navigate.8. A method for generating an image claim 6 , the method comprising:a) generating a series of image data using a Cone-Beam Computed Tomography (CBCT) imaging modality for generation of a series of volumetric images, each image covering an anatomic area;b) generating a series of auxiliary images using an auxiliary imaging modality; andc) generating a global volumetric image based on the volumetric images and the auxiliary images, thereby ...

USING A CBCT BONE SCAN TO DESIGN A DENTAL ABUTMENT

Disclosed is a method of creating a digital abutment design of a customized dental abutment, the including comprising: obtaining a bone scan comprising a digital representation of at least a part of a patient's jaw including the surface of the jawbone; and designing the digital abutment design of the customized dental abutment; wherein the design of the digital abutment design is at least partly based on fulfilling a set of predefined design criteria including the relationship between the digital representation of the jawbone and the digital abutment design. 1. A method of generating a digital abutment design of a customized dental abutment , wherein the method comprises:obtaining a bone scan comprising a digital representation of at least a part of a patient's jaw including the surface of the jawbone; andgenerating the digital abutment design of the customized dental abutment;where the digital abutment design is at least partly based on fulfilling a set of predefined design criteria comprising the relationship between the digital representation of the jawbone and the digital abutment design.2. The method according to claim 1 , wherein the bone scan comprises a CBCT scan.3. The method according to claim 1 , wherein the relationship between the digital representation of the jawbone and the digital abutment design comprises the relationship between the surface of the digital representation of the jawbone and the outer surface of the digital abutment design.4. The method according to claim 1 , the method further comprising:segmenting the voxel data of the CBCT scan to provide at least a digital bone surface representation; andusing the digital bone surface representation to constrain the digital design of the customized dental abutment to confirm that the predefined design criteria have been fulfilled.5. The method according to wherein the bone scan further comprises information about the shape and position of at least part of one or more teeth adjacent to the desired ...

BIO-COMPATIBLE RADIOPAQUE DENTAL FILLERS FOR IMAGING

Dental contrast formulations (“fillers”) of tailorable X-Ray radiopacity and methods for their use are provided. The disclosed fillers include mixtures of solid particles suspended in a biocompatible fluid. The solid particles contain one or more X-ray radiopaque materials. The biocompatible fluid can also contain one or more soluble X-ray radiopaque components. By controlling the composition of the solid particles, the composition of the biocompatible fluid, and the loading of the solid particles in the biocompatible fluid, the X-ray radiopacity and stability of the filler can be tailored to allow for improved discrimination of the filler within periodontal pockets, relative to adjacent soft tissue and teeth, so that the 3-D shape, volume, and depth of the pocket can be precisely and rapidly determined by X-Ray imaging. 1. A dental contrast composition comprising CaWOparticles dispersed in glycerol.2. The dental contrast composition of claim 1 , wherein the composition comprises 40 wt % suspension of CaWO.3. A composition claim 1 , comprising:particles comprising nanocellulose or diatom silica microshells coated with calcium phosphate suspended in a biocompatible fluid.4. The composition of claim 1 , wherein the calcium phosphate comprises hydroxyapatite.5. The composition of claim 3 , wherein the particles comprise microparticles claim 3 , nanoparticles claim 3 , or a combination thereof.6. The composition of claim 3 , wherein the composition is bioresorbable.7. The composition of claim 3 , wherein the particles have an X-ray radiopacity less than that of teeth or bone and greater than that of soft tissue.8. A contrast agent claim 3 , comprising:{'claim-ref': {'@idref': 'CLM-00003', 'claim 3'}, 'the composition of .'}9. The composition of claim 3 , wherein the microparticles are hollow.10. The composition of claim 3 , wherein the calcium phosphate comprises CaPO.11. The composition of claim 3 , wherein the calcium phosphate comprises Ca(PO)(OH).12. The composition ...

GUIDED CHARGED PARTICLE IMAGING/TREATMENT APPARATUS AND METHOD OF USE THEREOF

The invention comprises a method and apparatus for tracking and/or imaging impact of a particle beam treating a tumor using one or more imaging systems positionable about the tumor, such as a positron emission tracking and/or imaging system, where resulting tracking/imaging data: dynamically determines a treatment beam position, tracks a history of treatment beam positions, guides the treatment beam, and/or images a tumor before, during, and/or after treatment with the charged particle beam. 1. A method for imaging a tumor of a patient and treating the tumor with positively charged particles , comprising the steps of:transporting the positively charged particles from a synchrotron, along a beam transport line, and through an exit nozzle system to a treatment beam path; rotating a rotatable ring around a longitudinal axis of the patient;', 'rotating said imaging system around the patient using rotation of said rotatable ring; and', 'translating, through relative motion of the patient and said imaging system mounted to said rotatable ring, said imaging system past the tumor; and, 'imaging the tumor using an imaging system, said step of imaging the tumor further comprising the steps ofcontrolling the treatment beam path using image data from said imaging system.2. The method of claim 1 , said step of rotating said rotatable ring around the longitudinal axis of the patient further comprising the step of:maintaining an imaging source and an imaging detector of said imaging system on opposite sides of the patient.3. The method of claim 2 , said step of translating said imaging system past the tumor further comprising the step of:maintaining position of the patient along an axis between said imaging source and said imaging detector.4. The method of claim 3 , further comprising the step of:along at least one axis, independently moving said imaging system and the patient.5. The method of claim 4 , further comprising the step of:independently rotating: (1) said rotatable ring ...

MONOCHROMATIC X-RAY METHODS AND APPARATUS

According to some aspects, an x-ray apparatus for imaging and/or radiation therapy is provided, the x-ray apparatus comprises an electron source capable of generating electrons, at least one first target arranged to receive electrons from the electron source, the at least one first target comprising material that, in response to being irradiated by the electrons, emits broad spectrum x-ray radiation, at least one second target arranged to receive at least some of the broad spectrum x-ray radiation, the at least one second target comprising material that, in response to irradiation by broad spectrum x-ray radiation from the first target, emits monochromatic x-ray radiation, and at least one detector positioned to detect at least some of the monochromatic x-ray radiation emitted from the at least one second target. According to some aspects, a relatively low cost, relatively small footprint x-ray apparatus for generating monochromatic x-ray radiation suitable for medical/clinical purposes and appropriate for use in existing medical facilities such as hospitals and/or small clinical settings is provided. 1. A method of generating monochromatic radiation comprising:generating broad spectrum x-ray radiation from an x-ray tube comprising a first target that, in response to being irradiated by electrons, emits the broad spectrum x-ray radiation;directing at least some of the broad spectrum x-ray radiation to irradiate a second target comprising material that, in response to the irradiation, emits monochromatic x-ray radiation;directing at least some of the monochromatic x-ray radiation to irradiate target tissue to which no contrast agent has been added;detecting at least some of the monochromatic x-ray radiation transmitted through the target tissue; andgenerating at least one image based, at least in part, on the detected monochromatic x-ray radiation.2. The method of claim 1 , wherein the second target absorbs at least some of the broad spectrum x-ray radiation and in ...

X-ray imaging apparatus and method of operating the same

An X-ray imaging apparatus and a method of operating the X-ray imaging method are provided. The X-ray imaging apparatus includes a first panel configured to contact an object; an X-ray generator configured to maintain a uniform distance with the first panel and configured to generate an X-ray; a second panel facing the first panel and configured to contact the object; and an X-ray detector configured to detect the X-ray transmitted to the object.

METHOD AND APPARATUS FOR LARGE FIELD OF VIEW IMAGING AND DETECTION AND COMPENSATION OF MOTION ARTIFACTS

A method and apparatus are provided to improve large field of view CT image acquisition by using at least two scanning procedures: (i) one with the radiation source and detector centered and (ii) one in an offset configuration. The imaging data obtained from both of the scanning procedures is used in the reconstruction of the image. In addition, a method and apparatus are provided for detecting motion in a reconstructed image by generating a motion map that is indicative of the regions of the reconstructed image that are affected by motion artifacts. Optionally, the motion map may be used for motion estimation and/or motion compensation to prevent or diminish motion artifacts in the resulting reconstructed image. An optional method for generating a refined motion map is also provided. 1. An apparatus for generating a motion map , the apparatus comprising:a radiation source;a radiation sensitive detector which detects radiation emitted by the source that has traversed an examination region; anda reconstructor and an image processor;wherein the radiation source and the radiation sensitive detector are used to acquire projection data at a plurality of angular positions relative to an object disposed in the examination region;wherein the reconstructor is used to generate a reference image from the projection data;wherein reference projection data is obtained from a forward projection of the reference image;wherein differences between the acquired projection data and the reference projection data are computed to determine line integral differences; andwherein the image processor uses the line integral differences to generate a motion map indicative of the regions of a corresponding image reconstructed from the projection data that are affected by motion.2. The apparatus of claim 1 , wherein the image processor applies a windowing process to refine the motion map.3. The apparatus of claim 1 , wherein the image processor applies a normalization process to refine the motion ...

COMPUTED TOMOGRAPHY IMAGING

A computed tomography method seeking higher resolutions without imposing a dose increase is described A mask () forms a plurality of X-ray beam lets () which are passed through a subject (), and images are captured on X-ray detector (). The subject () is moved with respect to the X-ray detector and mask, including a rotation around a y axis, and a computed tomography image is reconstructed from the plurality of measured datapoints. The beam lets () are of small size. FIGS. - are blurred, FIGS. and contain too small letters/numbers. 1. A computed tomography method , comprising:generating an X-ray beam travelling in a beam direction z from an X-ray source having a focal spot;using a mask having a plurality of block regions and a plurality of apertures having a period p in a first orthogonal direction x, orthogonal to the beam direction z to divide the beam into a plurality of X-ray beamlets;passing the X-ray beam through a subject;capturing an image on an X-ray detector having an array of pixels extending in the x direction, the plurality of pixels having a period a in the x direction;moving the subject with respect to an imaging system comprising the X-ray source, mask and the X-ray detector;capturing a plurality of images as the subject is moved with respect to the imaging system, each image corresponding to a rotation angle θ and being in a form of a plurality of measured datapoints as a function of x, and storing the measured datapoints; andreconstructing a three-dimensional computed tomography image from the plurality of measured datapoints;wherein the mask is structured such that each of the beamlets defines a region in the subject which when geometrically scaled to a detector mask is less than F, wherein F is a full width half maximum (FWHM) of an overall spread function caused by the combination of a finite size of the focal spot and a finite pixel resolution at a plane of the detector, in the x-direction; andthe step of reconstructing reconstructs the three- ...

RADIOGRAPHIC IMAGING SYSTEM, COMPUTER READABLE STORAGE MEDIUM, OPTICAL IMAGING CONDITION SETTING METHOD, AND OPTICAL IMAGING APPARATUS

A radiographic imaging system includes a radiographic imager, an optical imager and an optical imaging condition setter. The radiographic imager detects radiation emitted from a radiation source and passed through a subject to take a radiograph. The optical imager takes an optical image of a region including a region to which the radiation is emitted from the radiation source. The optical imaging condition setter sets an optical imaging condition of the optical imager based on a radiographic imaging condition for the radiograph. 1. A radiographic imaging system comprising:a radiographic imager that detects radiation emitted from a radiation source and passed through a subject to take a radiograph;an optical imager that takes an optical image of a region including a region to which the radiation is emitted from the radiation source; andan optical imaging condition setter that sets an optical imaging condition of the optical imager based on a radiographic imaging condition for the radiograph.2. The radiographic imaging system according to claim 1 , wherein the radiographic imaging condition includes at least one of a distance from the radiation source to a radiation detector of the radiographic imager claim 1 , an imaging part claim 1 , a radiographic imaging direction claim 1 , and a size of the radiation detector.3. The radiographic imaging system according to claim 2 , wherein the optical imaging condition setter sets claim 2 , as the optical imaging condition claim 2 , at least one of an angle of view of the optical imager and an optical imaging direction.4. The radiographic imaging system according to claim 3 , wherein the optical imaging condition setter sets the angle of view of the optical imager according to the distance from the radiation source to the radiation detector such that an area of the subject to be imaged in the optical image remains unchanged.5. The radiographic imaging system according to claim 2 , wherein the optical imaging condition setter ...

METHOD FOR MANUFACTURING CRISS-CROSS TYPE X-RAY GRID

A method for manufacturing a criss-cross type X-ray grid may include: forming a plurality of criss-cross type grooves at predetermined intervals in a longitudinal direction and a lateral direction in a substrate made of an X-ray transparent material, through a semiconductor sawing machine, such that the grooves form a checker board shape as a whole; putting the substrate having the criss-cross type grooves formed therein into a storage tank filled with a molten X-ray absorbent material; filing the criss-cross type grooves, formed in the substrate, with the X-ray absorbent material by vacuuming the inside of the storage tank; and taking the substrate filled with the X-ray absorbent material out of the storage tank, and curing the substrate at room temperature. 1. A method for manufacturing a criss-cross type X-ray grid , comprising:forming a plurality of criss-cross type grooves at predetermined intervals in a longitudinal direction and a lateral direction in a substrate made of an X-ray transparent material, through a semiconductor sawing machine, such that the grooves form a checker board shape as a whole;putting the substrate having the criss-cross type grooves formed therein into a storage tank filled with a molten X-ray absorbent material;filing the criss-cross type grooves, formed in the substrate, with the X-ray absorbent material by vacuuming the inside of the storage tank; andtaking the substrate filled with the X-ray absorbent material out of the storage tank, and curing the substrate at room temperature.2. The method of claim 1 , wherein the criss-cross type grooves formed in the substrate are inclined at a predetermined angle toward the center from the center to the left and right ends of the substrate.3. The method of claim 1 , wherein the substrate is made of any one selected from the group consisting of plastic claim 1 , polymer claim 1 , aluminum claim 1 , ceramic claim 1 , graphite and carbon fiber.4. The method of claim 1 , wherein the X-ray ...

RADIATION SYSTEMS FOR RADITION TREATMENT AND IMAGING

A radiation system is provided. The radiation system may include a bore accommodating an object, a rotary ring, a first radiation source and a second radiation source mounted on the rotary ring and a processor. The first radiation source may be configured to emit a first cone beam toward a first region of the object. The second radiation source may be configured to emit a second beam toward a second region of the object, the second region including at least a part of the first region. The processor may be configured to obtain a treatment plan of the object, the treatment plan including parameters associated with radiation segments. The processor may be further configured to control an emission of the first cone beam and/or the second beam based on the parameters associated with the radiation segments to perform a treatment and a 3-D imaging simultaneously. 1. A radiation system , comprising:a bore configured to accommodate an object;a rotary ring;a first radiation source mounted on the rotary ring and configured to emit a first cone beam toward a first region of the object;a second radiation source mounted on the rotary ring and configured to emit a second beam toward a second region of the object, the second region including at least a part of the first region; and obtain a treatment plan of the object, the treatment plan including one or more radiation segments;', 'cause the rotary ring to rotate around the object in one direction continuously for at least two full rotations; and', 'control an emission of at least one of the first cone beam or the second beam based on the treatment plan to perform a treatment and a 3-D imaging simultaneously., 'a processor configured to cause the radiation system to2. The radiation system of claim 1 , wherein the processor is further configured to cause the radiation system to:obtain respiration information of the object;determine a rotation parameter of the rotary ring based on the respiration information of the object; ...

Method and apparatus for acquiring panoramic and CBCT volumetric radiographies

Method and apparatus for acquiring volumetric CBCT radiographies in an apparatus having a rotary supporting arm, at the ends of which at least an X-ray source and at least an X-ray sensor are positioned, the supporting arm rotating the at least one source and the at least one sensor around a patient. The method includes the steps of positioning a patient on the positioning device, and acquiring a CBCT image through a trajectory having an angular extension lower than 360°, wherein the rotation center of the trajectory of the X-ray sensor is never on the median sagittal plane defined by the patient positioned inside the apparatus and the trajectory is not symmetric to any of the possible sagittal planes of the patient. 1. A method of acquiring volumetric CBCT radiographies comprising:providing an acquisition apparatus having a rotary supporting arm, wherein at least an X-ray source and at least an X-ray sensor are positioned at ends of the rotary supporting arm, and wherein the rotary supporting arm is configured to rotate the at least one X-ray source and the at least one X-ray sensor around a patient;positioning a patient on a positioning device coupled to the apparatus; andacquiring a CBCT image through a rotational trajectory of the rotary supporting arm having an angular extension less than 360°,wherein a distance between the at least one X-ray source and the at least one X-ray sensor is less than 600 mm,wherein a rotation center of the trajectory of the X-ray sensor is never on a median sagittal plane defined by a patient positioned inside the apparatus, andwherein the trajectory of the X-ray sensor is not symmetric to any possible sagittal planes of the patient.2. The method according to claim 1 , wherein the distance between the at least one X-ray source and the at least one X-ray sensor is approximately the distance between the at least one X-ray source and the at least X-ray one sensor common for acquiring panoramic images.3. The method according to claim 2 ...

METHOD AND DEVICE FOR GENERATING A LOW-DOSE X-RAY IMAGE PREVIEW, IMAGING SYSTEM AND COMPUTER PROGRAM PRODUCT

A method of generating a preview of at least one low-dose x-ray image includes the followings steps: obtaining an initial volumetric representation of a patient from an x-ray device; creating at least one x-ray image projection from the initial volumetric representation; injecting correlated noise into at least one of the x-ray image projections; and processing the noise-injected x-ray image projections to create at least one preview of a patient-specific low-dose x-ray for showing to a user. There are also described a device for generating at least one preview of a low-dose x-ray image, a corresponding imaging system, and a non-transitory computer readable medium. 1. A method of generating a preview of a low-dose x-ray image , the method comprising the following steps:obtaining an initial volumetric representation of a patient by an x-ray device;creating one or more x-ray image projections from the initial volumetric representation;injecting correlated noise into at least one of the x-ray image projections to form one or more noise-injected x-ray image projections;processing the noise-injected x-ray image projections to generate at least one preview of a patient-specific low-dose x-ray image for display to a user according to a task specific to the patient.2. The method according to claim 1 , wherein the initial volumetric representation is a preoperative computed tomography scan.3. The method according to claim 1 , which comprises causing a low-dose x-ray image preview to simulate an intraoperative cone-beam computed tomography image.4. The method according to claim 1 , wherein the step of creating at least one x-ray image projection based on the initial volumetric representation comprises one of more of the following: simulating tube voltage and filtration claim 1 , beam hardening claim 1 , detector energy response of a cone-beam computer tomograph.5. The method according to claim 1 , wherein the step of creating an x-ray image projection based on the initial ...

SYSTEMS AND METHODS FOR MONITORING METABOLIC ACTIVITY AND DETECTORS FOR DETECTING PHOTONS

Examples of systems and methods for monitoring metabolic activity and detectors for detecting photons are disclosed. The methods can include detection in a front and a rear detector of a photon to determine a Compton cone. This Compton cone may be combined with further Compton cone, or Line of Response calculation to determine an origin of nuclear decay. In examples of the systems and methods, substantially real-time visualization of nuclear decay can be achieved. 1. A detector for detecting photons comprisinga plurality of detector modules forming a front detector and a rear detector,the detector modules comprising a plurality of detector devices, and an interface,the detector devices having a substrate extending from a front end to a rear end, and carrying a plurality of pixelated semiconductor detector slabs, and being arranged such that the front end is closer to a source of the photons than the rear end,the semiconductor detector slabs being arranged on readout circuits, and the detector devices having an input/output element at or near the rear end of the substrate,wherein a front group of one or more of the semiconductor detector slabs arranged close to the front end of the substrate are made from a semiconductor material configured to promote photon scattering and form the front detector,wherein a rear group of one or more of the semiconductor detector slabs arranged closer to the rear end of the substrate than the front group are made from a semiconductor material configured to promote photon absorption, and form the rear detector.2. The detector according to claim 1 , wherein the substrate is a kapton layer.3. The detector according to claim 1 , wherein a distance between the rearward most detector slab of the inner detector and the forward most detector slab of the rear detector is greater than a distance between the detector slabs of the front detector and than a distance between the detector slabs of the rear detector.4. The detector according to claim ...

SYSTEM AND METHOD OF LOW DOSE CT FLUOROSCOPY VIA APERTURE CONTROL

An X-ray filter can include a curved structure for positioning around a computed tomography (CT) bore of a CT scanner. The curved structure can be formed of a metal capable of blocking X-rays emitted by an X-ray source of the CT scanner. The curved structure can include two or more apertures. Each aperture of the two or more apertures can allow X-rays emitted by the X-ray source to enter the CT bore when the X-ray source is aligned with the aperture. The X-ray filter can include an opening, arranged opposite to the two or more apertures across the CT bore, for exposing an X-ray detector of the CT scanner to X-rays emitted by the X-ray source and entering the CT bore through at least one of the two or more apertures. The CT scanner can include the X-ray filter. 1. An X-ray filter , comprising: 'two or more apertures, each aperture of the two or more apertures allowing X-rays emitted by the X-ray source to enter the CT bore when the X-ray source is aligned with the aperture; and', 'a curved structure for positioning around a computed tomography (CT) bore of a CT scanner, the curved structure formed of a metal capable of blocking X-rays emitted by an X-ray source of the CT scanner, and includingan opening, arranged opposite to the two or more apertures across the CT bore, for exposing an X-ray detector of the CT scanner to X-rays emitted by the X-ray source and entering the CT bore through at least one of the two or more apertures.2. The X-ray filter of claim 1 , wherein the metal capable of blocking X-rays emitted by the X-ray source of the CT scanner includes lead.3. The X-ray filter of claim 1 , wherein a breadth of each aperture of the two or more apertures is smaller than a breadth of the opening.4. The X-ray filter of claim 1 , wherein a breadth of each aperture of the two or more apertures is such that the X-rays entering the CT bore through the aperture excite only a portion of the CT detector.5. The X-ray filter of claim 1 , further comprising:one or more ...

X-RAY CT SYSTEM AND MEDICAL PROCESSING APPARATUS

An X-ray CT system according to an embodiment includes processing circuitry configured to: execute first scanning of acquiring a first subject data set corresponding to first X-ray energy by irradiating a first region of a subject with X-rays; execute, after the first scanning, second scanning of acquiring a second subject data set corresponding to second X-ray energy and a third subject data set corresponding to third X-ray energy different from the second X-ray energy by irradiating a second region included in the first region with X-rays; and perform material decomposition among a plurality of reference materials based on: a fourth subject data set obtained based on the first subject data set and one of the second subject data set and the third subject data set; and the other of the second subject data set and the third subject data set. 1. An X-ray CT system comprising processing circuitry configured to:execute first scanning of acquiring a first subject data set corresponding to first X-ray energy by irradiating a first region of a subject with X-rays;execute, after the first scanning, second scanning of acquiring a second subject data set corresponding to second X-ray energy and a third subject data set corresponding to third X-ray energy different from the second X-ray energy by irradiating a second region included in the first region with X-rays; andperform material decomposition among a plurality of reference materials based on: a fourth subject data set obtained based on the first subject data set and one of the second subject data set and the third subject data set; and the other of the second subject data set and the third subject data set.2. The X-ray CT system according to claim 1 , wherein the processing circuitryacquires a first projection data set as the first subject data set through execution of the first scanning by irradiating the first region extending in a body axis direction of the subject with X-rays,acquires a second projection data set as ...