СПОСОБ ОБНАРУЖЕНИЯ ВЗРЫВЧАТОГО ВЕЩЕСТВА В ОБЪЕМЕ, НАПРИМЕР В БАГАЖЕ, И АППАРАТУРА ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Изобретение относится к распознаванию объектов. Его использование для обнаружения взрывчатых веществ в багаже позволяет достичь технического результата в виде создания усовершенствованного способа определения наличия или отсутствия объекта с малой толщиной в трехмерном пространстве. Способ включает в себя сканирование объема излучением для определения заранее заданного свойства каждого из множества элементов, составляющих объем, и идентификацию объема как объема, подозрительного на наличие взрывчатого вещества. Технический результат достигается благодаря тому, что сканирование производят в трехмерном объеме для определения плотности каждого объемного элемента изображения, связывают и помечают объемные элементы изображения, имеющие сходные плотности, для оценки непрерывности множества объемных элементов изображения, определяют объем каждой непрерывной области из объемных элементов изображения со сходными плотностями, сравнивают объем каждой такой непрерывной области с первой пороговой величиной ...

ПОСТРОЕНИЕ ИЗОБРАЖЕНИЯ ПО ЗАРЯЖЕННЫМ ЧАСТИЦАМ, СОЗДАВАЕМЫМ КОСМИЧЕСКИМИ ЛУЧАМИ

Использование: для томографии целевого объекта. Сущность изобретения заключается в том, что измеряют потерю энергии заряженных частиц, которые входят и проникают сквозь объем или останавливаются внутри объема без проникновения сквозь объем; на основании измеряемой потери энергии определяют пространственное распределение заряженных частиц, которые входят и проникают сквозь объем или останавливаются внутри объема без проникновения сквозь объем; и используют пространственное распределение потери энергии заряженных частиц для восстановления трехмерного распределения материалов в досматриваемом объеме. Технический результат: повышение качества изображения представляющего интерес объема. 8 н. и 4 з.п. ф-лы, 11 ил.

УСТРОЙСТВО ПОЛУЧЕНИЯ РЕНТГЕНОВСКИХ ИЗОБРАЖЕНИЙ И СПОСОБ ПОЛУЧЕНИЯ РЕНТГЕНОВСКИХ ИЗОБРАЖЕНИЙ

Изобретение относится к устройству получения рентгеновских изображений и способу получения рентгеновских изображений. Сущность изобретения заключается в том, что устройство получения рентгеновских изображений для получения информации о сдвиге фаз рентгеновского излучения, вызванном объектом, содержит расщепляющий элемент для пространственного расщепления рентгеновского излучения, излучаемого блоком генератора рентгеновского излучения, на рентгеновские пучки; блок аттенюатора, имеющий устройство, состоящее из элементов ослабления, для приема пучков рентгеновского излучения, расщепленного расщепляющим элементом; и блок детектора интенсивности для определения интенсивности пучков рентгеновского излучения, ослабленных блоком аттенюатора; и элемент ослабления, непрерывно изменяющий величину прохождения рентгеновского излучения в зависимости от места падения рентгеновского излучения на элемент. Технический результат - повышение качества изображения объекта с улучшенными краями. 4 н. и 6 з.п.

Verfahren und Vorrichtung zur Abtastung eines Objekts und Anzeige eines Bilds in einem Computer-Tomographie-System

Computer tomography device with spiral scanning e.g. for examination of heart

The device has a measuring system (1,3) for spiral scanning of the examined volume (V). Image data is generated in synchronism with the electrocardiogram signals obtained from the patient. The image reconstruction of the computer tomography data is controlled in dependence on the electrocardiogram curve.

Vorrichtung und Verfahren zur computertomografischen Messung eines Werkstücks

Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zur computertomografischen Messung eines Werkstücks (109), zumindest umfassend eine Computertomografie-Sensorik und einen Drehtisch (103) mit einem um eine Drehachse (103b) drehbaren Drehteller (104). Der Drehteller (104) weist eine Wechselschnittstelle (110) auf, an der manuell oder automatisch auswechselbar wahlweise ein Werkstückhalter (111) oder ein Zwischenstück (106), das einen oder mehrere Kalibierkörper (108) und/oder einen oder mehrere Driftkörper (108) enthält, koppelbar ist.

Imaging method, e.g. using MRI or CT, for use in treating pathologies, e.g. brain tumors, whereby the position of at least a layer in an examination area is determined using previously recorded reference images

Method for determining the position of at least a layer in an examination area, in which layer a section image of the examination area is to be recorded using an examination apparatus. Accordingly a 3D image data set of the examination area is recorded. This is then registered with a previously recorded 3D reference image set. Following this the layer of interest is determined using at least a reference layer defined in the 3D reference image set.

Verfahren und Vorrichtung zur Anwendung eines elektrooptischen Detektors in einem mikrotomographischen System.

HERSTELLUNG TOMOGRAPHISCHER ABBILDUNGEN.

Röntgen-CT-Bildrekonstruktionsverfahren und Röntgen-CT-System

Eine Aufgabe der vorliegenden Erfindung besteht darin, eine Auflösungsminderung zu reduzieren, die mit steigendem Abstand zu einem einer Scannzentrumposition zugeordneten Punkt in einem Tomographiebild größer wird und die von einer Projektionslinienumwandlung herrührt. Die Projektionslinienumwandlung wird durchgeführt, um Fächerstrahldaten in Parallelstrahldaten in Schritt S404 zu wandeln. Vor der Projektionslinienumwandlung wird in Schritt S403 eine erste Verstärkung an Projektionsdatenelementen durchgeführt, die in jeweiligen Ansichten enthalten sind und die in eng aneinander liegenden Zeitpunkten erfasst werden. Eine von der Umwandlung von Fächerstrahldatenelementen in Parallelstrahldatenelemente herrührende Schwankung unter den Zeitpunkten, in denen Projektionsdatenelemente erfasst werden, wird verringert, und streifenförmige Artefakte, die durch eine Projektionslinienumwandlung hervorgerufen werden und während einer Ausführung des MIP-Verfahrens auftreten, werden auf ein Minimum reduziert ...

Method for irradiation of material in object containing materials with extremely different absorption properties by controlling projection position of irradiating beam

When the object is the mouth of a patient and X-ray images of a tooth are being taken the presence of metal fillings in adjacent teeth intersecting the X-ray beam is undesirable. To avoid this the patent describes how the X-ray projector and camera can be positioned relative to the jaw to avoid this depending on the type of investigation in hand.

Computer tomograph for e.g. radiation therapy, has x-ray source with circular target, which includes multiple focus surfaces, which are scannable by focusing electron beam in discrete manner

The tomograph (1) has a stationary electron source producing electron beam. A stationary x-ray source (5) includes a circular target and a unit for guiding the electron beam in the x-ray source on a circular path coaxially to the circular target. The source (5) has a unit for deflecting the beam in a direction of target to produce concentrically rotating x-ray bundle (8) for radiography of a measuring field (7) from different directions. The target has multiple focus surfaces, which are scannable by focusing the electron beam in a discrete manner.

Correlating optical and x-ray images involves superimposing images in real time using devices for aligning source of x-ray energy through object, obtaining optical image of object

The method involves superimposing one image on the other in real time using an arrangement for aligning a source of x-ray energy from a point in space through an object of interest onto a detector plane to produce an x-ray image on the detector plane and a device for obtaining an optical image of the object from an equivalent optical point in space. Independent claims are also included for the following: an arrangement for directing an x-ray source through an object on a detector plane and a method and arrangement for positioning an optical camera with respect to an x-ray source.

Computertomographie-Gerät und Verfahren mit aktiver Anpassung der Mess-Elektronik

Computertomographie-Gerät aufweisend eine Röntgenröhre (1) zum Durchstrahlen eines zu untersuchenden Objektes (3) mit Röntgenstrahlung und einen Strahlenempfänger (2) zum Messen der durch das Objekt (3) transmittierten Röntgenstrahlung und zum Ausgeben von Messsignalen, eine Benutzerschnittstelle (6), über die mehrere die Messung charakterisierende Standardeinstellungen des Gerätes in Form von unterschiedlichen Auswerte- und Aufnahmeparametern einstellbar sind, eine Mess-Elektronik (7), die eine konfigurierbare Filter-Elektronik zum Filtern und Aufbereiten der Messsignale enthält, sowie einen Systemrechner (8) zum Konfigurieren der Filter-Elektronik unter Berücksichtigung von vor der Messung über die Benutzerschnittstelle (6) eingestellten Standardeinstellungen und zur Auswertung der Messergebnisse.

Röntgen-Detektoranordnung mit verringertem effektivem Abstand

Detektoranordnung für eine medizinische volumetrische Röntgen-CT-Anlage, wobei die Detektoranordnung sich entlang einer x-Achse in einer Richtung innerhalb einer Schichtbildebene und entlang einer z-Achse in einer Richtung senkrecht zur Schichtbildebene erstreckt und gekennzeichnet ist durch ein zweidimensionales Detektorfeld mit mindestens einem ersten Satz gleich großer quadratischer Detektorelemente (18), die in einer ersten Spalte angeordnet und deren Mitten auf einer geraden Linie ausgerichtet sind, und einem zweiten Satz gleich größer quadratischer Detektorelemente (18), die in einer neben der ersten Spalte verlaufenden zweiten Spalte angeordnet sind und deren Mitten auf einer geraden Linie in x-Richtung liegen, die parallel zu der geraden Linie verläuft, die durch die Mitten der Detektorelemente (18) der ersten Spalte festgelegt ist, wobei die Mitten der Detektorelemente jeder Spalte zu den Mitten benachbarter Detektorelemente benachbarter Spalten mittig versetzt angeordnet sind, ...

Prüfsystem mit einem CT-Gerät und einer zusätzlichen Scan-Abbildungsvorrichtung

Prüfsystem mit: einem CT-Gerät (80), wobei das CT-Gerät (80) eine Gantry (11), eine mit der Gantry (11) verbundene Strahlungsquelle (9) und eine mit der Gantry (11) verbundene Nachweisvorrichtung (10) gegenüber der Strahlungsquelle (9) umfasst, wobei die Nachweisvorrichtung (10) N Detektorenreihen mit einem vorbestimmten Intervall S von mindestens 5 mm und höchstens 80 mm zwischen zwei benachbarten Detektorenreihen umfasst, wobei N eine ganze Zahl größer als 1 ist, wobei das Intervall S die Differenz zwischen einem Mittenabstand t zwischen zwei benachbarten Detektorenreihen und einer Breite d jedes der Detektoren ist, d. h. S = t d, sowie mit einer Transportvorrichtung (6) für den Transport eines zu prüfenden Objekts, wobei die Transportvorrichtung (6) einen Träger, ein Förderband (70) und ein Förderbandpositions-Kodiergerät (5) aufweist, wobei eine Positionsbestimmungsvorrichtung (4) für das Objekt vorhanden ist, die eingerichtet ist, um die Position des Objekts festzulegen, wobei die ...

X ray detector array for computer tomography has several modules fixed on opposite side of support rail to printed circuit board providing electrical contact

An X ray detector array (2) has several individual modules (5) screwed (14-16) on a module support rail (3) with a separate circuit board (4) located on the opposite side to X ray radiation and using conducting tracks (11) for electrical contact (13). INDEPENDENT CLAIM is included for a computer tomography unit using the detector array.

Computed tomography tomographic scanning function, for large container inspection system, has remote control device which controls operation of radiation source, driving device and transmission device

A detector array is at the inner side of an annular rotatable rack (4). A transmission device (12) passes through the annular rotatable rack and annular rack body (10) and transmits a container truck (14) to be detected in linear movement. A remote control device controls operation of a radiation source, a driving device and transmission device and receives/displays image signal obtained by detector array.

Focus-detector system on X-ray equipment for generating projective or tomographic X-ray phase-contrast exposures of an object under examination uses an anode with areas arranged in strips

A bundled electron beam (BEB) (14) is controlled regarding its excursion in its direction by two pairs of plate electrodes (17.1,17.2;18.1,18.2) that operate vertically to each other. The BEB can use appropriate control of these plate electrodes to scan an anode (16) like scanning a TV picture line by line with a desirable gap and, as a result, can generate desired X-rays. Independent claims are also included for the following: (1) An X-ray system for generating projective phase-contrast exposures; (2) A method for generating projective or tomographic X-ray phase-contrast exposures of an object under examination with the help of a focus-detector system.

Manipulator between radiation source and image sensor for tomography

The manipulator (30) is inserted between the source (10) and image convertor or film (20). It incorporates a support (51) with a holder (53) for the subject (O) which is rotatable about two orthogonal axes (4,5) intersecting at the iso-centre (ISO), and movable along Cartesian co-ordinate axes (1',2',3'). The positions of the rotational axes with respect to the central beam (ZS) remain invariant during translatory movements. X'- and Y'-translations enable any detail of the subject to be moved from this plane to the iso-centre, about which the region of interest can be rotated freely. Z'-translation brings selected sectional planes at different depths to the iso-centre.

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

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

Röntgen-Computertomograf und Verfahren zum Betreiben eines Röntgen-Computertomografen

Die Erfindung betrifft ein Verfahren zur Erzeugung eines ersten Schattenbilds mit einem Röntgen-Computertomografen unter einer vorgegebenen ersten Winkelposition phi1. Zur Verminderung der applizierten Dosis wird erfindungsgemäß vorgeschlagen, dass die Röntgenquelle 1 lediglich beim Durchfahren eines vorgegebenen, die erste Winkelposition phi1 enthaltenen Sektors Deltaphi betrieben wird, indem bei Erreichen der vorgegebenen ersten Winkelposition phi1 ein erster Röntgenpuls P, P1 erzeugt wird.

Tomography method`s truncated artifacts correcting method, involves dividing projection images taken by x-ray detector into segments, and searching local extreme values for selection of set of support points

The method involves examining an object irradiated with radiation (6) from an x-ray radiation source (2), and detecting radiation penetrated through the object using an x-ray detector (4). Projection images taken by the detector are extended by extrapolation. The images are divided into segments, and local extreme values in the segments are searched for the selection of a set of support points, which are impairment-free when compared to adjacent points. The extrapolation function is executed as a function of the selected points. An independent claim is also included for a device for the correction of truncated artifacts in a tomography method.

Mikro-Tastkopf und Vorrichtung zum Messen einer Probenoberfläche

Mikrosonde (10, 50), welche folgendes aufweist: einen freitragenden Arm, der aus einem ersten Hebelabschnitt (16, 62) mit einem freien Ende und aus einem zweiten Hebelabschnitt (18, 64) mit einem vorderen Endabschnitt (16) gebildet ist, wobei der erste Hebelabschnitt (16, 62) an seinem freien Ende einen Meßtaster (11, 51) aufweist, und wobei der erste Hebelabschnitt (16, 62) von dem vorderen Endabschnitt des zweiten Hebelabschnittes (18, 64) hervorsteht; einen Halterungsabschnitt (15, 55) zum Halten des zweiten Hebelabschnittes (18, 64); zumindest ein erstes Piezowiderstandselement (14, 56, 58), welches an einem Abschnitt vorgesehen ist, welcher den zweiten Hebelabschnitt (18, 64) mit dem Halterungsabschnitt (15, 55) verbindet, wobei das zumindest eine Piezowiderstandselement (14, 56, 58) ausgelegt ist, den zweiten Hebelabschnitt (18, 64) relativ zu dem Halterungsabschnitt (15, 55) auszulenken; und ein zweites Piezowiderstandselement (12, 52), welches an einem Abschnitt vorgesehen ist, ...

Characterising body tissue

Scanning instrument

Stationary ct apparatus

Method of estimating chordal holdup valves of gas, oil and water for tomographic imaging of a three-phase flow through a volume

DETECTING TRAPPED MATERIAL WITHIN A HOLLOW ARTICLE USING RADIATION

NON-DESTRUCTIVE EVALUATION IMAGING

Mehtod of obtaining images of a sample using a oblique-view cone-beam CT system

Multiple-view-angle cargo security inspection method

Method and apparatus for proton computerised tomography

Shipping container inspection system with CT scanning function

A container inspection system with CT tomographic scanning function, which is related to a large container inspection system for Customs, is disclosed, comprising: a radiation source; an annular rotatable rack with the radiation source provided at the outside thereof and rotated with it; an annular rack body for supporting the annular rotatable rack in a vertical plane; a driving device for rotating the annular rotatable rack; a detector array provided in the inner side of said annular rotatable rack and opposed to a side where the radiation source is provided; a transmission device passing through the annular rotatable rack and annular rack body, and transmitting a container truck to be detected in linear movement; a remote control device for controlling the operations of the radiation source, the driving device and the transmission device, and receiving/displaying the image signal obtained by the detector array. The transmission system may be a two part conveyor having and synchronous ...

Scanning method

A scanning method can identify a change in the density of an object. A gamma radiation source and detector array are rotated around the object. Data absent due to a malfunctioning detector, or of inferior resolution, may be replaced by data from its conjugate pair, located at an equal angle from the source, once a parallel to fan beam conversion has been performed. The scans may be used to determine defects in pipelines or other deep undersea structures.

Method and device for determining the geometry of structures by means of computer tomography

The invention relates to a method for determining the geometry of a structure on an object at least by using a computer tomography sensor system comprising at least a radiation source, a mechanical axis of rotation, and a detector, preferably a planar detector, wherein surface measurement points are generated by the computer tomography sensor system, for example in the region of material transitions. In order to select the surface measurement points to be used for the determination of a geometry feature by using any target geometry, in particular without the availability of a CAD model being necessary, according to the invention, in order to determine the geometry features, surface measurement points are used which are associated with the geometry features to be determined on the basis of specifiable rules and the geometry features are determined from the associated surface measurement points.

Scanning method and apparatus

X-ray inspection system and method for rotating a test object by means of such an x-ray inspection system

The invention relates to an x-ray inspection system comprising an x-ray source (1), a detector (3) and a rotary table (4), which is arranged therebetween and at which a test object (2) can be secured, wherein the rotary table (4) is arranged on a positioning table (6), wherein the positioning table (6) is movable between the x-ray source (1) and the detector (3) parallel to the XY-plane, wherein the XY-plane is perpendicular to the surface of the detector (3) extending parallel to the XZ-plane and wherein the rotary table (4) is rotatable about the Z-axis. Moreover, the invention relates to methods for rotating a test object (2) in an x-ray inspection system according to one of the preceding patent claims, wherein the test object (2) is secured to the rotary table (4), wherein the rotary table (4) is rotated about the Z-axis and, simultaneously, the positioning table (6) is displaced in the XY-plane, wherein the rotational angle φ of the rotary table (4) has the following relationships ...

Method for performing material decoposition using a dual-energy X-Ray CT and corresponding Dual-energy X-Ray CT Apparatus

CT SLICE PROXIMITY ROTARY TABLE AND ELEVATOR FOR EXAMINING LARGE OBJECTS

System and method for computed tomography

The present disclosure provides a system and method for CT image reconstruction. The method may include combining an analytic image reconstruction technique with an iterative reconstruction algorithm of CT images. The image reconstruction may be performed on or near a region of interest.

PROCEDURE FOR AUTOMATIC RECOGNIZING OF CELLS WITH ILLNESS-REFERRED MOLECULAR MARKING KOMPARTIMENTIERUNG

ELEKTRONENCOMPUTERTOMOGRAFIE AND ELEKTRONENCOMPUTERTOMOGRAF

PROCEDURE AND DEVICE FOR THE THREE-DIMENSIONAL ILLUSTRATION WITHIN THE FOURIER RANGE

RADIATION MASK FOR A TWO-DIMENSIONAL CT DETECTOR

VERFAHREN ZUR BESTIMMUNG DER OPTIMALEN LAGE EINES OBJEKTES FÜR EINE 3D-CT-DURCHSTRAHLUNG

ARRANGEMENT FOR THE INSTRUMENTATION COLLECTION OF A PROJECTION OF THE RADIANT ABSORPTION ABILITY OF A PERIODICALLY VARIABLE ITEM UNDER TEST

DEVICE AND PROCEDURE OF THE X-RAYING COMPUTER TOMOGRAPHY FOR THE RECOGNITION OF THIN OBJECTS

Device for determining composition and structure of objects

Inspection system, inspection method, CT apparatus and detection device

Process and apparatus for imaging

OPTICAL TOMOGRAPHY OF SMALL MOVING OBJECTS USING TIME DELAY AND INTEGRATION IMAGING

Sample containment apparatus, systems, and methods

Apparatus and systems may operate to enable positron emission imaging with a unitary chamber body having an open end that defines a hollow interior portion shaped to completely contain a flexible sleeve that is used to cover a core sample when the sleeve is seated within the hollow interior portion. An end cap may be formed to engage the open end of the chamber body, which is configured to attenuate gamma rays approximately eight times less than stainless steel, while supporting a pressure differential of at least 3 MPa between the chamber inlet and the outlet when fluid carrying a radioactive tag to generate the gamma rays flows through the hollow interior portion and the core sample via the inlet and the outlet. Additional apparatus, systems, and methods are disclosed.

An efficient method for selecting representative elementary volume in digital representations of porous media

The present invention relates a method to estimate representative elementary volume (REV) in a sample of porous media wherein the sub-volume selected is a better approximation of the elementary volume than existing methods. REV in a sample of porous media such as rock can be defined wherein the REV is selected with respect to the expected direction of fluid flow through the porous media. The method can quantify how good is the digital representation of a rock and how accurate a description of a fluid flow through Darcy's law will be, and allows the evaluation of different length scales in different directions for the REV and an assessment of the anisotropy of the pores structures when the method is applied in different directions. The method also can determine a robust criteria to understand when a trend of porosity -permeability breaks down due to an insufficient size of the subsample.

IMPROVED VISUALIZATION OF ANATOMICAL CAVITIES

Described embodiments include a system that includes a display and a processor. The processor is configured to modify 5 an image slice by filling a portion, of the image slice, that corresponds to an anatomical cavity with a representation of a wall of the anatomical cavity, and to display the modified image slice on the display. Other embodiments are also described. 3429894v1 CDe CNb ...

X-Ray detection method and X-Ray detector

An X-ray detection method and an X-ray detector. The method comprises: dividing an energy range of a photon emitted by an X-ray source into N energy windows, wherein N is an integer greater than 0; based on linear attenuation coefficients of a substance of interest and a background substance of an imaging target, acquiring a weight factor of each energy window in the N energy windows; based on the weight factor of each energy window in the N energy windows, acquiring a weight factor matrix of M output channels of an X-ray detector, wherein M is an integer greater than 0; and based on the number of photons with an energy range falling within each energy window in the N energy windows, and the weight factor matrix, acquiring output results of the M output channels.

APPARATUS FOR THREE DIMENSIONAL TOMOGRAPHY UTILIZING AN ELECTRO-OPTIC X-RAY DETECTOR

METHOD AND APPARATUS FOR TRANSMITTING INFORMATION ABOUT A TARGET OBJECT BETWEEN A PRESCANNER AND A CT SCANNER

A method or apparatus for analyzing an object includes an X-ray prescanner (1) that performs a prescan of the object to determine prescan information about the object. Then, a computer tomography (CT) scanner (3) performs a CT scan on at least one plane of the object based on the prescan information to determine CT information. In one embodiment, if the CT scan of the object includes or is in the vicinity of metal, then metal artifact correction of a reconstructed image from the CT scan is performed based on the prescan information. In another embodiment, a processor (5) analyzes the CT information and the prescan information to determine whether to update the prescan information based on the CT information.

AUTOMATICALLY DETECTING CELLS HAVING NUCLEAR AND CYTOPLASMIC DENSITOMETRIC FEATURES ASSOCIATED WITH DISEASE BY OPTICAL IMAGING

... ²²²A system and method for rapidly detecting cells (1) of interest using multi-²dimensional, highly quantitative, nuclear and cytoplasmic densitometric ²features (NDFs and CDFs) includes a flow optical tomography (FOT) instrument ²capable of generating various optical projection images (or shadowgrams) ²containing accurate density information from a cell, a computer (40) and ²software to analyze and reconstruct the projection images into a multi-²dimensional data set, and automated feature collection and object classifiers. ²The system and method are particularly useful in the early detection of ²cancers such as lung cancer using a bronchial specimen from sputum or cheek ²scrapings and cervical/ovarian cancer using a cervical scraping, and the ²system can be used to detect rare cells in specimens including blood.² ...

HELICAL COMPUTED TOMOGRAPHY

An x-ray imaging system may include an x-ray generator, one or more radiation detectors, a rotary stage, a linear translation stage, a motion control system, and a data acquisition system. The rotary stage has an axis of rotation arranged perpendicular to an axis of an x-ray beam emitted by the x-ray generator. The linear translation stage may be configured to move the rotary stage linearly along an axis aligned with the axis of rotation of the rotary stage. The motion control system may synchronize rotational motion of the rotary stage and linear motion of the linear translation stage. The data acquisition system may comprise processors configured to receive user input parameters. The processors may configure, based at least in part on the user input parameters, the x-ray imaging system to acquire radiographs. The processors may generate a three-dimensional image from the radiographs.

METHOD AND SYSTEM FOR DETERMINING THE LOCAL QUALITY OF SURFACE DATA EXTRACTED FROM VOLUME DATA

The aim of the invention is to determine the local quality of surface data (O) extracted from a volume data set (V) by means of a surface determination method. An environment in the volume data set (V) is determined for each surface point of the surface data (O). Using the curve of the grayscale values of voxels from said environment, at least one quality characteristic (Q) is derived which characterizes the quality of the respective examined surface point. The quality characteristic (Q) or each quality characteristic is output together with coordinates of the respective examined surface point as the method result (O').

VISUALIZATION OF DISTANCES TO WALLS OF ANATOMICAL CAVITIES

Described embodiments include a system that includes a display and a processor. The processor is configured to modify an image that includes a representation of a wall of an anatomical cavity, by overlaying an icon that represents an intrabody tool on a portion of the image that corresponds to a location of the intrabody tool within the anatomical cavity, and overlaying a marker on a portion of the representation of the wall that corresponds to a location at which the intrabody tool would meet the wall, were the intrabody tool to continue moving toward the wall in a direction in which the intrabody tool is pointing. The processor is further configured to display the modified image on the display. Other embodiments are also described.

INTEGRATED MICROTOMOGRAPHY AND OPTICAL IMAGING SYSTEMS

An integrated microtomography and optical imaging system includes a rotating table that supports an imaging object, an optical stage, and separate optical and microtomography imaging systems. The table rotates the imaging object about a vertical axis running therethrough to a plurality of different rotational positions during a combined microtomography and optical imaging process. The optical stage can be a trans-illumination, epi-illumination or bioluminescent stage. The optical imaging system includes a camera positioned vertically above the imaging object. The microtomography system includes an x-ray source positioned horizontally with respect to the imaging object. Optical and x-ray images are both obtained while the imaging object remains in place on the rotating table. The stage and table are included within an imaging chamber, and all components are included within a portable cabinet. Multiple imaging objects can be imaged simultaneously, and side mirrors can provide side views of ...

A COMPUTED TOMOGRAPHY IMAGING PROCESS AND SYSTEM

A computed tomography imaging process, including: acquiring projection images of an object by detecting radiation that has passed through the object for respective different relative orientations of the object and the radiation; and processing the projection images to generate a tomogram of the object; wherein the radiation passes through the object in the form of a diverging beam, and the different relative orientations of the object and the beam of radiation define two or more complete trajectories of the beam along the object, the complete trajectories being mutually offset to reduce the degradation of spatial resolution in portions of the generated tomogram due to the divergence of the beam through the object.

METHOD FOR CHARACTERIZING A COMPOSITE MATERIAL OBJECT

L'invention porte sur un procédé de caractérisation d'un objet en matériau composite à renfort fibreux tissé, tressé ou cousu, comprenant une étape de détermination, par tomographie aux rayons X, de niveaux de gris (120) d'au moins une partie de l'objet, puis une étape d'exploitation desdits niveaux de gris pour obtenir au moins une information sur le tissage, par distinction d'au moins la matrice libre (122) et de torons de fibres mêlées de matrice (124, 126), lesdits torons étant considérés comme un matériau homogène. Ce procédé permet une détermination fine de paramètres jusque-là difficilement accessibles ou non-accessibles tels qu'un taux de fibres dans le matériau (V f), un rapport (RCT) entre quantités de fibre en fils de trame et de fibre en fils de chaîne, une distance inter colonnes en chaîne (d c), une distance inter colonnes en trame (d t) ou un angle d'embuvage (.theta.).

MICRO-CT-BASED METHOD FOR MEASURING FLOW VELOCITY OF ASSIMILATION PRODUCTS OF ROSACEAE CROP

Die vorliegende Erfindung offenbart ein auf Mikro-CT basiertes Verfahren zur Bestimmung der Strömungsrate von Assimilationsprodukten von Kulturpflanzen aus der Familie der Rosaceae, umfassend die folgenden Schritte: Schritt 1: Errichten einer auf Mikro-CT basierten Beziehungsformel zwischen der Siebröhrenquerschnittsfläche (Querschnittsfläche des Gefäßbündels) und der Querschnittsfläche des Stängels von Rosaceae-Kulturpflanzen, um die Querschnittsfläche des Gefäßbündels eines Internodiums einer zu messenden Rosaceae-Kulturpflanze festzustellen; Schritt 2: Feststellen der Konzentration von Assimilationsprodukten an beiden Enden des Internodiums der Rosaceae-Kulturpflanze. Errichten eines auf der Nahinfrarot-Spektroskopie basierten Mannit-Nachweisverfahrens und Feststellen der Mannit-Konzentration an beiden Enden des Internodiums; Schritt 3: Berechnen der Strömungsrate der Assimilationsprodukte des Internodiums mit dem Konzentrationsfeld an beiden Enden des Internodiums und der Querschnittsfläche ...

METHOD OF DETERMINING MOBILITY OF FLUID IN SAMPLE ROCK

METHOD AND DEVICE SCANNING

SYSTEM AND METHOD MUCH PHASE SEGMENTATION DENSITY OF IMAGES, REPRESENTING POROUS MEDIUM

DEVICE, SYSTEMS AND METHODS FOR ACCOMMODATE SPECIMENS OF

APPARATUS FOR CORE SAMPLE CONTAINMENT USING POSITRON EMISSION TOMOGRAPHY, AND ALSO SYSTEM AND METHOD FOR POSITRON EMISSION TOMOGRAPHY OF CORE SAMPLE

X-ray computed tomograph

Fan-beam coherent-scatter computer tomography

Improved computer tomography imaging for detecting examination object with sharp attenuation

The invention relates to a method for acquiring measuring data (p) of an examination object to serve as image data (f) of the examination object by using computer tomography imaging (C1). Measuring data of the examination object as projections are obtained during circulation of X-ray tubes (C2, C4) around the examination object, and data detection for image data (f) of a volume element of the object is carried out during the set of circulations. A non-integral set of projections is detected per circulation, such that an integral projection is complemented with the set of projections. For example, for one volume element, the projection can be obtained during two successive circulations, and half integral set of projections is detected per circulation.

CT apparatus and method thereof

CT apparatus and method thereof

Procédé d'inspection non-agressive d'articles creux

Ce procédé consiste à introduire, à l'intérieur de la pièce creuse, un radio-isotope qui est capable d'être absorbé par ladite substance étrangère piégée, et à repérer les émissions provenant de la substance absorbée par la matière piégée, par des moyens de détection sensibles aux radiations.

METHOD FOR OBTAINING INFORMATION ABOUT OBJECT BOUNDARIES IN THE LIMITED-ANGLE COMPUTED TOMOGRAPHY

PROCESS OF DETECTION Of a FABRIC OF NATURE DETERMINED IN RADIOLOGY NUMERIQUEET ITS USE FOR the ADJUSTMENT OF the PARAMETERS Of EXPOSURE

PROCESS AND DEVICE FOR THE TOMOSYNTHESE

METHOD FOR NON-AERONAUTICAL DESTUCTIF FOR A ROOM

Object tomography method, involves shifting rotation axle with respect to X-ray transmitter device and detection system along direction perpendicular to rotation axle, while axle remains between transmitter device and detection system

L'invention concerne un procédé de tomographie d'un objet (2) monté de façon rotative autour d'un axe de rotation (6) qui est disposé entre un dispositif (3) émetteur de rayons X et un système de détection des rayons (4), le procédé comprenant des successions d'étapes de prise de vue lors desquelles des rayons X sont émis en direction de l'objet (2). Selon l'invention, pendant chaque étape de prise de vue, l'axe de rotation (6) est déplacé par rapport au dispositif émetteur (3) et au système de détection (4), selon une direction ayant une composante perpendiculaire à cet axe (6), tout en restant entre le dispositif émetteur (3) et le système de détection (4). La présente invention concerne également une installation permettant la mise en oeuvre du procédé.

TEST DEVICE FOR VIEWING BY TOMOGRAPHY FLOW PATHS PREFERRED RESIN IN ENVELOPES

METHOD FOR IDENTIFYING AND/OR TRACKING THE DEFORMATION OF A PART OF A TURBINE ENGINE

L'invention concerne un procédé d'identification et/ou de suivi des déformations d'une pièce mécanique (14) en matériau composite pour turbomachine, la pièce comprenant une préforme (26) en matériau fibreux et une résine (24). Le procédé consiste à incorporer des particules métalliques (22) à la préforme ou à la résine (24) lors de la fabrication de la pièce (14) et à soumettre la pièce mécanique (14) à deux contrôles par rayons X à deux instants différents de manière à identifier la pièce (14) et/ou déduire la déformation de sa structure interne.

PROCESS OF COMPENSATION OF THE DIFFUSION AND PROCESS OF MEASUREMENT

La présente invention vise à compenser la disposition qui survient pendant une radiographie multicoupe. La longueur de projection pro_ex d'entités non-sujets, à savoir des entités autres qu'un sujet, provoquant la dispersion est acquise, et la longueur de projection pro_pt d'un objet à radiographier est acquise. L'objet à radiographier est radiographié avec une épaisseur de faisceau établie à la même valeur qu'une épaisseur do de détecteur afin de mesurer des données I (do, do). L'objet à radiographier est radiographié avec une épaisseur de faisceau établie à la même valeur qu'une épaisseur do de détecteur afin de mesurer des données I (do, d). Une ampleur de dispersion S (do, d) est calculée d'après la différence entre les données I (do, do) et des données I (do, d), et est enregistrée en association avec la somme des logueurs de projection pro_pt + pro_ex. Après la radiographie d'un sujet por produire des données, la longueur de projection pro_ex des entités non sujets ayant affecté les ...

Patient`s body X-ray or infrared imaging method for scanner, involves making term to term averaging of adjusted and superimposed images to obtain synthetic image expressing coefficient of patient`s examined body

Dispositif d'imagerie X d'un corps comprenant, un support (1,3,5,7) pour recevoir un corps à examiner (9), une source (11) émettant un faisceau de rayons X, un détecteur (13) irradié par le faisceau, un convertisseur (15) des intensités détectées en données, un moyen (17) faisant tourner d'un angle de rotation le support (1-7) monté mobile autour d'un axe de rotation (19) par rapport à la source (11 ) et au détecteur (13) et un ordinateur (27) dûment programmé pour moyenner les données en n et m valeurs moyennes, construire une matrice initiale (n,m) avec les n et m valeurs moyennes, ajuster le coefficient d'atténuation en chaque zone élémentaire par une méthode des moindres carrés en tenant compte des valeurs moyennes, répéter les étapes précédentes pour des données acquises avec différentes paires d'angles de rotation, et moyenner terme à terme les matrices ajustées pour aboutir à une matrice de synthèse exprimant une image des coefficients d'atténuation du corps examiné (9).

APPARATUS Of IMAGERY BY X-RAYS

APPARATUS Of IMAGERY BY X-RAYS

APPARATUS Of IMAGERY BY X-RAYS

APPARATUS Of IMAGERY BY X-RAYS

APPARATUS Of IMAGERY BY X-RAYS

APPARATUS Of IMAGERY BY X-RAYS

METHOD OF ANALYZING AND QUANTIFYING BEHAVIOR OF SUPERABSORBENT POLYMER IN CEMENT-BASED MATERIAL USING THREE-DIMENSIONAL X-RAY COMPUTED TOMOGRAPHY

The present invention relates to a method of analyzing and quantifying behavior of a superabsorbent polymer in a cement-based material using three-dimensional X-ray computed tomography (CT) and, more specifically, relates to a method of coating a surface and inner portion of a superabsorbent polymer using FeCl_3; and a method of measuring and quantifying behavior of a superabsorbent polymer in a cement-based material using a superabsorbent polymer coated thereof. According to the present invention, by using a superabsorbent polymer coated with a high-density adsorption material, it is possible to accurately distinguish between a superabsorbent polymer contained in a cement-based material and pores on three-dimensional X-ray CT images; thereby performing behavior and quantification analysis on a superabsorbent polymer. COPYRIGHT KIPO 2017 ...

Moon grid for transmission electron microscopy tomography and method for fabricating the same

Method for analyzing the Internal Density of Material using a X-ray Computerized Tomography

PURPOSE: A device for analyzing density of material using an X-ray tomogram imaging method is provided to analyze density distribution of the material inside by X-ray tomogram imaging. CONSTITUTION: A device for analyzing density of material using an X-ray tomogram imaging method is as follows. A tool(30) of circular columnar shape is established between an x-ray generator(10) and an X-ray detector(11). Multiple standard samples(21,22,23), which has revealed material and density of the analysis object, are inserted in the tool of the circular columnar shape. X-rays(40) performs tomography while rotating a tool of circular columnar shape in 360°. The density distribution of the analysis object is calculated by using the X-ray intensity shown in the image which is tomogramed using X-rays. COPYRIGHT KIPO 2012 ...

METHOD FOR MEASURING AND COMPENSATING SCATTERING, CAPABLE OF SUPPRESSING DEGRADATION OF IMAGE QUALITY OF COMPUTED TOMOGRAPHY IMAGES

PURPOSE: A method for measuring and compensating scattering is provided to improve image quality of CT(Computed Tomography) images by compensating for the scattering generated during a multi-slice imaging process. CONSTITUTION: A projected length pro_ex of a non-subject entity is acquired. A projected length of a subject entity pro_pt is acquired. The non-subject and subject entities are inserted into a passage of an x-ray and a first value is acquired while a thickness of a detector is set to be equal to a thickness of a beam. Then, a second value is acquired while the thickness of the detector is set to be greater than the thickness of the beam. A scattering quantity is acquired based on a difference between the first and second values. The subject entity is pictured, and the lengths pro_ex and pro_pt are calculated. The calculated data is used for compensating for scattering in an acquired image. © KIPO 2006 ...

X-RAY TOMOGRAPHY TYPE FORMING PRODUCT TEST SYSTEM

The present invention provides an X-ray tomography type forming product test system. According to the present invention, the X-ray tomography type forming product test system comprises: an X-ray generation device; a power supply device; a power supply control device; an X-ray detection device; an image treating device; and a system control device. Therefore, through an image of a forming product to be tested, which is calculated from the image treating device, existence of a defect, existence of a foreign substance, and a position of a foreign substance of the forming product to be test can be detected. COPYRIGHT KIPO 2016 (1) Forming product to be tested (10) X-ray generation device (11) X-ray tube (20) Power supply device (30) Power control device (40) X-ray detection device (41) Image multiplier (42) X-ray filming camera (50) Image treating device (60) System control device (70) Analysis device (80a) First monitor (80b) Second monitor (81) Memory (AA) X-ray (BB) Image output in real ...

X-RAY COMPUTED TOMOGRAPHY APPARATUS, SPECIALLY IN CONNECTION WITH REDUCING EXPOSURE OF HELICAL SCAN OF X-RAY APPARATUS

PURPOSE: An X-ray CT(Computed Tomography) apparatus is provided to prevent needless X-ray radiation by preventing the X-ray cone beam from being shielded. CONSTITUTION: An X-ray CT apparatus includes an X-ray area detector and a scanning gantry tilting device. As the X-ray area detector, an X-ray CT apparatus having a multi-row X-ray detector or a flat panel is used. To tilt a scanning gantry, the scanning gantry tilting device controls a surface of an X-ray cone beam on a front side of a moving direction of a helical scan to be parallel with a reconstruction area, and starts an X-ray irradiation operation. © KIPO 2006 ...

método para formação de imagem de campo escuro e sistema de formação de imagem

A radiation detector

Disclosed herein is a detector, comprising: a pixel comprising a first subpixel and a second subpixel, wherein the first subpixel is configured to generate a first electrical signal upon exposure to radiation, and wherein the second subpixel is configured to generate a second electrical signal upon exposure to the radiation; wherein the detector is configured to determine a number of particles of the radiation incident on the first subpixel over a first period of time, based on the first electrical signal; wherein the detector is configured to determine an intensity of the radiation by integrating the second electrical signal over a second period of time.

Space-based CT scan system toward an astronomical object

A CT scan system toward an astronomical object, including: a first satellite means for equipping a first satellite with an emitting means, said emitting means being for emitting super penetrating elementary particles; a second satellite means for equipping a second satellite with a detection means, said detection means being for detecting said super penetrating elementary particles; a super penetrating elementary particle measurement means for measuring the super penetrating elementary particles that are emitted from said emitting means, transmitted through said astronomical object, and detected by said detection means on said second satellite, said second satellite being, at the time of a measurement, opposite to said first satellite with respect to said astronomical object in between; and a CT reconstructing means for reconstructing a CT scan image regarding internal structure of said astronomical object based on the data obtained from said super penetrating elementary particle measurement means iterated.

Method and apparatus for assessing the threat status of luggage

A method and apparatus for assessing a threat status of a piece of luggage. The method comprises the steps of scanning the piece of luggage with penetrating radiation to generate image data and processing the image data with a computing device to identify one or more objects represented by the image data. The method also includes further processing the image data to compensate the image data for interaction between the object and the penetrating radiation to produce compensated image data and then determine the threat status of the piece of luggage.

Computer tomographic workpiece measuring device

A marine device has a floating buoy containing electronics, a submerged payload containing electrical devices and electronics, a power source and a mooring line. At least a part of the power source is submerged and electrically connected to at least one of the submerged payload and the floating buoy, and the mooring line extends between the buoy and at least one of the power source submerged part, the submerged payload and a submerged anchor having a mass allowing it to stay under the water surface.

Methods and apparatus for displaying images

In one aspect, a method of displaying data is provided. The method comprises obtaining projection data of an object by exposing an object to radiation at a plurality of view angles and detecting at least some of the radiation exiting the object to form the projection data, operating a computer to reconstruct the projection data at a reconstruction resolution to form image data comprising a plurality of voxels representing locations within the object, each of the plurality of voxels being assigned an associated intensity indicative of a density of the subject matter at the respective location, determining a maximum resolution for display, above which variation in intensity between adjacent voxels is not supported by information in the projection data, the maximum resolution being less than the reconstruction resolution, and displaying the image data at or below the maximum resolution.

Apparatus and a method of determining the proportions of different powders in a powder

A method of determining the proportions of different powders in a powder comprises obtaining a sample of a powder, adding and mixing the sample into a molten material and freezing the mixture of powder and molten material to form a block. Computed tomography is performed on the block to produce a three-dimensional image of the block, the three-dimensional image of the block comprises a first shade, a second and a third shade corresponding to the material, a first powder particle and a sec and powder particle. The three-dimensional image of the block is analysed to count the number of regions exhibiting the second shade and the third shade corresponding to the number of first powder particles and second powder particles respectively. The fraction of second particles in the powder is determined by dividing the number of second powder particles by the sum of the number of first powder particles and the number of second powder particles.

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.

System for non-destructive testing and method for processing data generated therein

Systems and methods are described that reduce the amount of data that is transferred among the components of the system. In one embodiment, the testing system comprises a scanner device such as a computed-tomography (CT) scanner that generates a volumetric representation of a part-under-inspection. The testing system is further configured to identify a region of interest in the volumetric representation, wherein the region of interest may correspond to an area of the part-under-inspection where a defect or flaw may form. The testing system may further format the data of the volumetric representation so the resulting formatted volumetric representation comprises less data than the original volumetric representation.

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.

X-ray imaging apparatus

To provide an X-ray imaging apparatus capable of easily adjusting the sensitivity or capable of easily extracting the amount of refraction of X-rays. An X-ray imaging apparatus irradiating an object to be measured with an X-ray beam from an X-ray source that generates X-rays of a first energy and X-rays of a second energy different from the first energy to measure an image of the object to be measured includes an attenuator and a detector. The attenuator attenuates the X-ray beam transmitted through the object to be measured and is configured so as to vary the amount of attenuation of the X-rays depending on a position on which the X-ray beam is incident. The detector detects the X-ray beam transmitted through the attenuator and is configured so as to detect the X-rays of the first energy and the second energy.

Method for core thermal conductivity determination

A method for core sample effective thermal conductivity provides for scanning a core sample by X-ray micro-computed tomography scanner and transferring a three dimensional scan image to an image analysis computer for processing. Then a layer thickness to be analyzed is set and a layer with maximum thermal resistance is defined within the image. The value of core effective thermal conductivity is defined by the allocated layer.

Apparatus and method for non-rotational computer tomography

A multi-dimensional representation of an object is obtained in that first and second pictures of the object illuminated using an X-ray source are created using a sensor that is located, in relation to the X-ray source, behind the object in a preferential direction defined by the relative positions of the object and of the sensor. A distance in the preferential direction between the X-ray source and the object is different in the first picture than in the second picture. The multi-dimensional representation of the object is obtained by combining the first and second pictures.

System and method for improved energy series of images using multi-energy ct

A method for creating an energy series of images acquired using a multi-energy computed tomography (CT) imaging system having a plurality of energy bins includes acquiring, with the multi-energy CT imaging system, a series of energy data sets, where each energy data set is associated with at least one of the energy bins. The method includes producing a conglomerate image using at least a plurality of the energy data sets and, using the conglomerate image, reconstructing an energy series of images, each image in the energy series of images corresponding to at least one of the energy data sets.

Component aperture location using computed tomography

An exemplary component measuring method includes determining a position of an aperture of a component using a computed tomography scan of a gage and a component. The gage is inserted into the aperture of the component during the computed tomography scan.

Radiographic phase-contrast imaging apparatus

A radiographic phase-contrast imaging apparatus obtains a phase-contrast image using two gratings including the first grating and the second grating. The first and second gratings are adapted to form a moire pattern when a periodic pattern image formed by the first grating is superimposed on the second grating. Based on the moire pattern detected by the radiographic image detector, image signals of the fringe images, which correspond to pixel groups located at different positions with respect to a predetermined direction, are obtained by obtaining image signals of pixels of each pixel group, which includes pixels arranged at predetermined intervals in the predetermined direction, as the image signal of each fringe image, where the predetermined direction is a direction parallel to or intersecting a period direction of the moire pattern other than a direction orthogonal to the period direction. Then, a phase-contrast image is generated based on the obtained fringe images.

System for measuring sample pore using computed tomography and standard sample and method thereof

The present invention relates to a system for measuring a sample pore using a computed tomography (CT) and a standard sample and to a method thereof, more particularly to a system for measuring a sample pore using a computed tomography (CT) and a standard sample and to a method thereof, wherein the number of pixels in the count range of a cross-sectional image of the measurement sample and the number of pixels corresponding to the gray level range of the pore are calculated with reference to the count range utilized in the cross-sectional image of the standard sample and the gray level range of the pore so as to accurately measure the porosity of the measurement sample after performing a CT scan of the standard sample and the measurement sample together using a CT scanner.

Efficient Method For Selecting Representative Elementary Volume In Digital Representations Of Porous Media

The present invention relates a method to estimate representative elementary volume (REV) in a sample of porous media wherein the sub-volume selected is a better approximation of the elementary volume than existing methods. REV in a sample of porous media such as rock can be defined wherein the REV is selected with respect to the expected direction of fluid flow through the porous media. The method can quantify how good is the digital representation of a rock and how accurate a description of a fluid flow through Darcy's law will be, and allows the evaluation of different length scales in different directions for the REV and an assessment of the anisotropy of the pores structures when the method is applied in different directions. The method also can determine a robust criteria to understand when a trend of porosity-permeability breaks down due to an insufficient size of the subsample.

Rotatable drum assembly for radiology imaging modalities

Among other things, a rotatable drum for a radiology imaging modality is provided herein. The rotatable drum comprises a bore, defined by an inner circumference of a sidewall of the rotatable drum. In one embodiment, the sidewall comprises one or more apertures through which radiation may pass. By way of example, a radiation source and a detector array may be mounted outside of the bore (e.g., on an outside surface of the sidewall) and apertures in the sidewall may permit radiation to pass from the radiation source to the detector array without being attenuated by the sidewall of the drum. In another embodiment, the detector array may be comprised of a plurality of detector modules that may be individually mounted/dismounted from the rotatable drum, and in one example, may provide structural support to the rotatable drum.

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.

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.

ANATOMICAL IMAGING SYSTEM WITH CENTIPEDE BELT DRIVE

An anatomical imaging system comprising: 1. An anatomical imaging system comprising:a CT machine; anda transport mechanism mounted to the base of the CT machine, wherein the transport mechanism comprises a fine movement mechanism for moving the CT machine precisely, relative to the patient, during scanning.2. A system according to wherein the fine movement mechanism is configured to move the CT machine relative to the patient using indexed movement in discrete steps claim 1 , whereby to enable slice scanning.3. A system according to wherein the fine movement mechanism is configured to move the CT machine relative to the patient using substantially continuous movement claim 1 , whereby to enable helical scanning.418.-. (canceled)19. A method for scanning a patient claim 1 , comprising:moving a CT machine across room distances to the patient; andscanning the patient while moving the CT machine precisely relative to the patient during scanning.20. A method for scanning an object claim 1 , comprising:moving a scanner across room distances to the the object; andscanning the object while moving the scanner precisely relative to the object during scanning. This patent application claims benefit of:(i) pending prior U.S. Provisional Patent Application Ser. No. 60/670,164, filed Apr. 11, 2005 by Andrew P. Tybinkowski et al. for ANATOMICAL IMAGING SYSTEM WITH CENTIPEDE DRIVE (Attorney's Docket No. NLOGICA-1 PROV); and(ii) pending prior U.S. Provisional Patent Application Ser. No. 60/593,001, filed Jul. 20, 2004 by Bernard Gordon et al. for ANATOMICAL SCANNING SYSTEM (Attorney's Docket No. NLOGICA-14 PROV).The two above-identified patent applications are hereby incorporated herein by reference.This invention relates to anatomical imaging systems in general, and more particularly to anatomical imaging systems of the sort utilizing Computerized Tomography (CT) systems and the like.Strokes are the third leading cause of death in the United States (causing approximately 177,000 ...

SYSTEMS AND METHODS FOR X-RAY COMPUTED TOMOGRAPHY

A system and method for X-ray computed tomography includes a robotic arm that moves an X-ray emitter around a subject in a curvilinear path and an X-ray detector that captures 2-dimensional views while the subject is scanned. Movements of the emitter and detector are coordinated such that the position and angle of the emitter relative to the detector remains substantially constant during scanning. A processor uses computed tomography to reconstruct an image of the subject from the captured 2-dimensional views. The robotic arm varies the pitch of the X-ray emitter during the scan to enhance the spatial resolution of the reconstructed image. The processor generates a projection transformation matrix based on movement of the robotic arm for each captured 2-dimensional view that is applied during reconstruction. 1. A method of performing X-ray computed tomography , comprising:rotating an X-ray emitter and an X-ray detector in a curvilinear path about a subject to be scanned;varying the pitch of the X-ray emitter and the X-ray detector while rotating in the curvilinear path;scanning the subject with the X-ray emitter while rotating in the curvilinear path and varying the pitch of the X-ray emitter and the X-ray detector;capturing a plurality of 2-dimensional views by the X-ray detector while scanning the subject; andreconstructing a high spatial resolution digital image of the subject from the captured plurality of 2-dimensional views,wherein movement of the X-ray emitter and the X-ray detector is coordinated such that the position and angle of the X-ray emitter relative to the X-ray detector remains substantially constant during the scanning.2. The method of claim 1 , further comprising:generating a projection transformation matrix associated with each captured 2-dimensional view based at least in part on the movement, andwherein the operation of reconstructing includes applying each generated projection transformation matrix to data associated with each captured 2- ...

MEASUREMENT PROCESSING DEVICE, X-RAY INSPECTION DEVICE, MEASUREMENT PROCESSING METHOD, MEASUREMENT PROCESSING PROGRAM, AND STRUCTURE MANUFACTURING METHOD

A measurement processing device used for an X-ray inspection device includes: a region information acquisition unit that acquires first region information based on X-rays passing through a first region that is a part of a first specimen; a storage unit that stores second region information related to a second region of a second specimen, the second region being larger than the first region; and a determination unit that determines whether or not a region corresponding to the first region is included in the second region, based on the first region information and the second region information. 127-. (canceled)28. A measurement processing device using an X-ray inspection device , comprising:a region information acquisition unit that detects X-rays passing through a partial region of a first specimen and acquires first region information related to a first region;an inclination detection unit that detects an inclination of the first specimen when acquiring the first region information; anda comparison unit that compares a standard inclination and the inclination of the first specimen detected by the inclination detection unit.29. The measurement processing device according to claim 28 , whereinthe region information acquisition unit detects X-rays passing through a partial region of a second specimen, and acquires second region information related to a second region,the inclination detection unit detects an inclination of the second specimen when acquiring the second region information, andthe comparison unit compares the inclination of the second specimen and the inclination of the first specimen detected by the inclination detection unit.30. The measurement processing device according to claim 28 , whereinthe inclination detection unit detects the inclination of the first specimen when acquiring the first region information, based on the first region information.31. The measurement processing device according to claim 28 , whereinthe inclination of the first specimen ...

COMPUTING DEVICE, COMPUTING PROGRAM, X-RAY MEASURING SYSTEM AND X-RAY MEASURING METHOD

A computing device configured to obtain information about a subject using a detection result detected by an X-ray detector which detects an X-ray passing through the subject, which device includes: a unit configured to obtain a detection result of the X-ray detector; a first obtaining unit configured to obtain a complex refractive index of the X-ray after passing through the subject using the detection result; and a second obtaining unit configured to obtain information about the subject in accordance with a correlation between the complex refractive index and a mass absorption coefficient. 1. A computing device configured to obtain information about a subject using a detection result detected by an X-ray detector which detects an X-ray transmitted through the subject irradiated with an X-ray in a certain wavelength , the device comprising:a unit configured to obtain detection results detected by the X-ray detector;a first obtaining unit configured to obtain information about a complex refractive index n of the subject for the X-ray; anda second obtaining unit configured to obtain information about a mass absorption coefficient (μ/ρ) of the subject in accordance with a correlation between a parametric ratio (β/δ) according to the complex refractive index n and the mass absorption coefficient (μ/ρ),where μ denotes a linear absorption coefficient of a subject for an X-ray in a certain wavelength, ρ denotes mass density, n denotes a complex refractive index of a subject for an X-ray in a certain wavelength, and 1-δ and -β respectively denote a real part and an imaginary part in the complex refractive index n.3. The computing device according to claim 1 , wherein the information about the subject is at least any one of mass density claim 1 , an average atomic number claim 1 , and an average mass number of the subject.4. The computing device according to claim 1 , wherein the second obtaining unit obtains the mass absorption coefficient on the basis of the complex ...

NON-INTRUSIVE MEASUREMENT OF THE VOLUME DENSITY OF A PHASE IN A PART

Method and system for non-intrusive measurement of volume density of a specific phase in a part, comprising: processor producing a volume image of the part, the image being formed by a three-dimensional grid of voxels, the values of which indicate the disposition of the specific phase in the part, processor associating a binary coefficient with each voxel of the volume image, thus constructing an initial three-dimensional matrix representation of binary coefficients representing a presence or absence of the specific phase in zones of the part corresponding to the voxels, processor convoluting the initial matrix representation with a convolution matrix kernel corresponding to a predetermined reference volume, the convolution performed by effecting a composition of three (successive) monodimensional convolutions in three independent directions, thus forming a resultant matrix representation, each resultant coefficient of which represents a volume ratio (the density) of the specific phase in the reference volume. 110-. (canceled)11. Method for the non-intrusive measurement of the volume density of a specific phase in a part , characterised in that it comprises the following steps:producing a volume (tomographic) image of said part, said image being formed by a three-dimensional grid of voxels, the values of which indicate the disposition of said specific phase in (corresponding zones of) said part,associating a binary coefficient with each voxel of said volume (tomographic) image, thus constructing an initial three-dimensional matrix representation of binary coefficients, said binary coefficients representing a presence or absence of said specific phase in zones of said part corresponding to the voxels,convoluting said initial matrix representation with a convolution matrix kernel corresponding to a predetermined reference volume, said convolution being performed by effecting a composition of three (successive) monodimensional convolutions in three independent ...

INTEGRATED MICROTOMOGRAPHY AND OPTICAL IMAGING SYSTEMS

An integrated microtomography and optical imaging system includes a rotating table that supports an imaging object, an optical stage, and separate optical and microtomography imaging systems. The table rotates the imaging object about a vertical axis running therethrough to a plurality of different rotational positions during a combined microtomography and optical imaging process. The optical stage can be a trans-illumination, epi-illumination or bioluminescent stage. The optical imaging system includes a camera positioned vertically above the imaging object. The microtomography system includes an x-ray source positioned horizontally with respect to the imaging object. Optical and x-ray images are both obtained while the imaging object remains in place on the rotating table. The stage and table are included within an imaging chamber, and all components are included within a portable cabinet. Multiple imaging objects can be imaged simultaneously, and side mirrors can provide side views of the object to the overhead camera. 1. An integrated microtomography and optical imaging system , comprising:an imaging chamber adapted to contain a separate imaging object therewithin;a rotating table located within the imaging chamber and adapted to support the separate imaging object thereupon, wherein the rotating table is further adapted to rotate the imaging object about a vertical axis running therethrough to a plurality of different rotational positions during a combined microtomography and optical imaging process;an optical imaging system located within or about the imaging chamber, said optical imaging system including a camera positioned substantially vertically above the imaging object and adapted to obtain optical images of the imaging object with respect to the vertical axis while the imaging object is on the rotating table; anda microtomography imaging system located within or about the imaging chamber and configured to obtain x-ray images of the imaging object while ...

Method and system for identifying a liquid product in luggage or other receptacle

A method, an apparatus and a system are provided for determining if a piece of luggage contains a liquid product comprised of a container holding a body of liquid. The piece of luggage is scanned with an X-ray scanner to generate X-ray image data conveying an image of the piece of luggage and contents thereof. The X-ray image data is processed with a computer to detect a liquid product signature in the X-ray image data and determine if a liquid product is present in the piece of luggage. A detection signal is released at an output of the computer conveying whether a liquid product was identified in the piece of luggage. The detection signal may, for example, be used in rendering a visual representation of the piece of luggage on a display device to convey information to an operator as to the presence of a liquid product in the piece of luggage.

SCANNING METHOD AND APPARATUS

The invention discloses a scanning method and apparatus suitable for scanning a pipeline or process vessel in which a beam of gamma radiation from a source is emitted through the vessel to be detected by an array of detectors which are each collimated to detect radiation over a narrow angle relative to the width of the emitted radiation beam. 1. A method of inspecting an underwater pipeline to determine wall thickness or information about the contents of the pipeline , the method comprising:interposing the pipeline between a gamma radiation source and an array of detector units, the source and the detector units being mounted in a fixed relationship with each other on a support so that the radiation emitted by the source passes along a plurality of paths through a portion of the pipeline and impinges upon the detector units;rotating the support, the source, and the detector units around a circumference of the pipeline and acquiring data at a plurality of radially offset positions around the pipeline to acquire density data at a variety of angles through the pipeline; andpresenting a representation of the pipeline or contents of the pipeline using the density data.2. The method according to claim 1 , wherein the support claim 1 , the source claim 1 , and the array of detector units are provided on an apparatus that comprises a buoyancy material.3. The method according to claim 2 , wherein the apparatus is hinged so that the apparatus is configured to be opened and closed around the pipeline.4. The method according to claim 1 , wherein the representation is a representation of the composition of the pipeline or its contents.5. The method according to claim 1 , wherein the representation is built using tomography algorithms.6. The method according to claim 1 , further comprising detecting a void in the pipeline.7. The method according to claim 1 , further comprising detecting a crack in the pipeline.8. The method according to claim 1 , further comprising detecting wall ...

LAMELLA-SHAPED TARGETS FOR X-RAY GENERATION

A method and system are disclosed for producing an x-ray image of a sample using a lamella-shaped target to improve the usual tradeoff between imaging resolution and image acquisition time. A beam of electrons impacts the lamella-shaped target normal to the narrower dimension of the lamella which then determines the virtual source size along that axis. For low-energy x-ray generation, the small electron penetration depth parallel to the wider dimension of the lamella determines the virtual source size along that axis. Conductive cooling of the target is improved over post targets with the same imaging resolution. The lamella-shaped target is long enough to ensure that the electron beam does not impact the support structure which would degrade the imaging resolution. Target materials may be selected from the same metals used for bulk or post targets, including tungsten, molybdenum, titanium, scandium, vanadium, silver, or a refractory metal. 1. A method for producing an x-ray image of a sample , the method comprising:directing a beam of electrons having landing energies of less than 2,000 eV along a first axis onto a first surface of a lamella-shaped target, the impact of the electrons in the beam onto the lamella-shaped target generating x-rays from within an interaction volume within the lamella-shaped target, wherein a portion of the x-rays are emitted towards an x-ray detector;positioning a sample along a second axis between the lamella-shaped target and the x-ray detector; andacquiring an x-ray image by collecting the x-rays which are not absorbed by the sample using the x-ray detector, the lamella-shaped target has a height in a direction along the first axis, a length in a direction along the second axis, and a width along a third axis that is different from the first and second axes;', 'the height and the length are at least twice the width; and', 'the electron beam interaction volume extends along the first axis from the first surface a distance of less than ...

Solid scintillator, radiation detector, and radiation examination device

A solid scintillator in an embodiment includes a polycrystal body of an oxide having a garnet structure. In the solid scintillator, a linear transmittance at a wavelength of 680 nm is 10% or more. The oxide constituting the solid scintillator has a composition represented by, for Example, General formula: (Gd 1−α−β−γ Tb α Lu β Ce γ ) 3 (Al 1−x Ga x ) a O b , wherein 0<α≦0.55, 0<β≦0.55, 0.0001≦γ≦0.1, α+β+γ<1, 0<x<1, 4.8≦a≦5.2, 11.6≦b≦12.4.

COMPUTER IMPLEMENTED METHODS FOR TRAINING OR USING A SOFTWARE INFRASTRUCTURE BASED ON MACHINE LEARNING TECHNIQUES

Computer implemented method for training a software infrastructure based on machine learning techniques and intended for analysis of data obtained from a three-dimensional tomographic inspection of objects of a predetermined type, such as logs, with the aim of determining information about internal characteristics of interest of the self-same objects, wherein, once a training set comprising a plurality of objects of the same predetermined type has been selected, for each object the software infrastructure is supplied with training input data and corresponding training output data, which are processed by the software infrastructure for setting internal processing parameters of the software infrastructure which correlate the training input data with the training output data; where the training input data comprise data obtained from a three-dimensional tomographic inspection of the object, and the training output data comprise information about internal characteristics of interest assessed at internal points of the object, and where the information about the internal characteristics of interest is at least partly assessed at real internal points of the object, previously made accessible by cutting or breaking the object. 2. The computer implemented method according to claim 1 , wherein claim 1 , for each piece of the object claim 1 , the labelling step comprises first a step of identifying the object from which the piece was obtained.3. The computer implemented method according to claim 2 , wherein the step of identifying the object from which the piece was obtained comprises either a recognition of the piece or a tracking of the objects and of the pieces inside the processing plant.4. The computer implemented method according to claim 2 , wherein claim 2 , for each piece of the object claim 2 , the labelling step also comprises a step of identifying the position of the piece inside the object from which it was obtained.5. The computer implemented method according to ...

INSPECTION METHOD AND DEVICE

An inspection method is provided herein. The inspection method is adapted for an inspection device. The inspection method includes: optically scanning an examining target for generating a scanned image; reconstructing the scanned image for a reconstructed volume; adjusting a slicing direction associated with the examining target for slicing the reconstructed volume into a sliced image; inspecting the sliced image for analyzing one or more features of the examining target; and outputting an inspection result of the examining target. 1. An inspection method , comprising:optically scanning an examining target for generating a scanned image;reconstructing the scanned image for a reconstructed volume;adjusting a slicing direction associated with the examining target for slicing the reconstructed volume into a sliced image, wherein the slicing direction comprises a non-horizontal slicing direction;inspecting the sliced image for analyzing one or more features of the examining target; andoutputting an inspection result of the examining target.2. The inspection method of claim 1 , wherein the step of inspecting the sliced image and outputting the inspection result of the examining target comprises:inspecting a symmetry of the sliced image; andoutputting an abnormal result when the symmetry of the sliced image is under a predetermined threshold value.3. The inspection method of claim 1 , wherein the step of inspecting the sliced image for analyzing the one or more features of the examining target comprises:inspecting the sliced image for detecting whether the examining target is abnormal in real time during the examining target on a drive mechanism, wherein the drive mechanism is configured to transfer the examining target.4. The inspection method of claim 1 , wherein the features of the examining target comprise gradient claim 1 , thickness claim 1 , curvature claim 1 , shape claim 1 , or geometric characteristic.5. The inspection method of claim 1 , wherein the non- ...

REAL-TIME ANALYSIS AND CONTROL OF ELECTRON BEAM MANUFACTURING PROCESS THROUGH X-RAY COMPUTED TOMOGRAPHY

Electron beam manufacturing processes, and systems that perform the processes, are described that utilize real-time analysis and control of the electron beam manufacturing processes by detecting secondary x-rays that are generated as a result of the electron beam contacting a workpiece. The detected secondary x-rays are used to generate, in real-time, a three-dimensional cross-sectional image of the portion or region of the workpiece surrounding the location contacted by the electron beam. In addition, real-time analysis of the three-dimensional cross-sectional image can be used to detect defects and real-time re-work or correction of defects can be performed by directing an electron beam back to an area with a defect. 1. A process comprising:detecting secondary x-rays resulting from an electron beam contacting a portion of a workpiece with sufficient energy to generate the secondary x-rays;in real-time, using the detected secondary x-rays to generate a three-dimensional cross-sectional image of the workpiece adjacent to the portion thereof contacted by the electron beam;in real-time, analyzing the generated three-dimensional cross-sectional image to detect a defect in the workpiece; andthereafter using a correction electron beam to correct a detected defect in the workpiece without conducting a separate inspection of the workpiece.2. The process of claim 1 , wherein the workpiece is a joint between two structures being welded together claim 1 , and the electron beam is used to weld the two structures to each other.3. The process of claim 1 , wherein the workpiece is a structure that is being built up by adding material to the structure in an additive manufacturing process claim 1 , and the electron beam is used in the additive manufacturing process.4. The process of claim 1 , comprising using the electron beam to modify the portion of the workpiece in a welding process or in an additive manufacturing process.5. The process of claim 1 , comprising generating the ...

METHOD FOR OPERATING AN X-RAY DEVICE AND ASSOCIATED X-RAY DEVICE

A method is disclosed for operating an x-ray device, in particular a computed tomograph, including a controller and a number of detector units coupled thereto for signaling purposes. Each of the detectors includes a functional unit and a number of detector elements coupled thereto. In an embodiment of the method, a synchronized clock signal for activating the detector elements is created from a control signal of the controller on the functional unit side. 1. A method for an x-ray device including a controller and a number of detector units coupled to the controller for signaling purposes , each of the detector units including a respective functional unit and a number of detector elements coupled to the respective functional unit , the method comprising:creating a synchronized clock signal, for activating the detector elements, from a control signal of the controller on a functional unit side of the controller.2. The method of claim 1 , wherein the synchronized clock signal is created by the plurality of the functional units claim 1 , through clock recovery claim 1 , from the control signal.3. The method of claim 1 , wherein signals are routed claim 1 , between the controller and a respective functional unit claim 1 , bidirectionally.4. The method of claim 3 , wherein the signals are transmitted by way of a multiplexing method claim 3 , between the functional units and the controller.5. An x-ray device claim 3 , comprising:a controller; anda number of detector units coupled to the controller for signaling purposes, each of the number of detector units including a respective functional unit and a number of detector elements coupled to the respective functional unit, wherein each of the respective functional units including a control unit to create a synchronized clock signal for activating the respective detector elements from a control signal of the controller.6. The x-ray device of claim 5 , wherein the controller is coupled via a serial signal line to each of the ...

Ct system and detection device for ct system

The present application discloses a CT system and a detection apparatus for the CT system. The detection apparatus includes: a high-energy detector assembly including a plurality of rows of high-energy detectors arranged along a predetermined trajectory; a low-energy detector assembly including a plurality of rows of low-energy detectors arranged at intervals along the predetermined trajectory, the low-energy detector assembly and the high-energy detector assembly being disposed in a stack; a number of rows of the low-energy detectors is smaller than a number or rows of the high-energy detectors; and each row of the low-energy detectors covers a row of high-energy detectors.

Estimating Background Radiation from Unknown Sources

Embodiments include a method, comprising: receiving measured radiation obtained from a radiation detector that received radiation through an object; simulating the measured radiation obtained from the radiation detector that received radiation through the object; generating an offset based on the measured radiation and the simulated measured radiation; estimating scatter radiation based on the offset; and estimating primary radiation based on the estimated scatter radiation 1. A method , comprising:receiving measured radiation obtained from a radiation detector that received radiation through an object;simulating the measured radiation obtained from the radiation detector that received radiation through the object;generating an offset based on the measured radiation and the simulated measured radiation;estimating scatter radiation based on the offset; andestimating primary radiation based on the estimated scatter radiation.2. The method of claim 1 , further comprising:generating a gain based on the measured radiation and the simulated measured radiation;wherein estimating the scatter radiation further comprises estimating the scatter radiation based on the gain and the offset.3. The method of claim 2 , further comprising:generating the estimated scatter radiation based on the gain, the offset, and a simulated scatter radiation component of the simulated measured radiation; andgenerating the estimated primary radiation based on the estimated scatter radiation and the measured radiation.4. The method of claim 2 , further comprising:fitting a polynomial to a first vector of pixel values of the measured radiation versus a second vector of pixel values of the simulated measured radiation; andgenerating the gain based on the polynomial.5. The method of claim 4 , wherein:the gain is a linear term of the polynomial.6. The method of claim 5 , wherein:the polynomial is at least a second order polynomial.7. The method of claim 2 , further comprising:fitting a first polynomial ...

Coordinate measuring apparatus and method for measuring an object

The invention relates to a coordinate measuring apparatus for measuring an object, having an x-ray sensory mechanism as a first sensory mechanism that is provided with an x-ray source and at least one x-ray sensor which detects the x-rays, and a second sensory mechanism such as a tactile and/or an optical sensory mechanism that can be placed in the x, y, and/or z direction of the coordinate measuring apparatus in relation to the object. In order to be able to easily measure also large-size test objects, the x-ray sensory mechanism can be positioned in the coordinate measuring apparatus according to the second sensory mechanism.

SHIFTING TURN TABLE FOR X-RAY IMAGING MANIPULATOR

A component imaging system having at least one x-ray tube and an x-ray detector comprises a rotatable platform positioned between the x-ray tube and the x-ray detector. The rotatable platform is rotatable about a first rotational axis. A turntable is mounted on top of the rotatable platform. The turntable comprises: a stage platform for holding a component having an area of interest, the area of interest having a rotational axis; and a mounting plate rotating with the rotatable platform about the first rotational axis. The stage platform is movable in at least a first direction from a starting position to an imaging position to align the rotational axis of the area of interest with the rotational axis of the rotatable platform. 1. A component imaging system , the system comprising:a frame, wherein a x-ray detector is mountable at a first end of the frame and a x-ray tube is mountable at a second end of the frame opposite the first end;a rotatable platform positioned between a first end of the frame and the second end of the frame, the rotatable platform being rotatable about a first rotational axis; and a stage platform for holding a component having an area of interest, the area of interest having a rotational axis; and', 'a mounting plate for engagement with the rotatable platform, the mounting plate rotating with the rotatable platform about the first rotational axis;', 'wherein the stage platform is moveable in a first direction from a starting position to an imaging position, the first direction being perpendicular to the first rotational axis., 'a turntable comprising2. The component imaging system of claim 1 , configured such that in the imaging position claim 1 , the rotational axis of the area of interest is aligned with the first rotational axis.3. The component imaging system of claim 1 , further comprising a controller for controlling movement of the stage platform from the starting position to the imaging position.4. The component imaging system of ...

X-RAY COMPUTED TOMOGRAPHY APPARATUS WITH SCANNER FUNCTION

An X-ray computed tomography apparatus with a scanner function includes a vertical frame, a patient support arm provided below the vertical frame, a horizontal support arm extending horizontally from a top portion of the vertical frame, a rotary arm drive unit provided at an end of the horizontal support arm, a horizontal rotation arm provided horizontally below the rotary arm drive unit to rotate 360 degrees, a general CT imaging X-ray source provided at one end of the horizontal rotation arm, and an X-ray detector provided at the other end of the horizontal rotation arm to face the general CT imaging X-ray source. A micro CT imaging X-ray source is provided on the vertical frame, a rotary table for seating and rotating an object to be imaged is provided above the patient support arm, and the X-ray detector is composed of a common X-ray detector. 1. An X-ray computed tomography apparatus with a scanner function , comprising:a vertical frame;a patient support arm provided below the vertical frame;a horizontal support arm extending horizontally from a top portion of the vertical frame;a rotary arm drive unit provided at an end of the horizontal support arm;a horizontal rotation arm provided horizontally below the rotary arm drive unit to rotate 360 degrees;a general CT imaging X-ray source provided at one end of the horizontal rotation arm; andan X-ray detector provided at the other end of the horizontal rotation arm to face the general CT imaging X-ray source,wherein a micro CT imaging X-ray source is further provided on the vertical frame, a rotary table for seating and rotating an object to be imaged is further provided above the patient support arm, and the X-ray detector is composed of a common X-ray detector capable of being rotated by an X-ray detector drive unit, so that the apparatus can perform both a micro CT imaging operation and a general CT imaging operation.2. The apparatus according to claim 1 , wherein a rotary table drive unit for rotating the ...

Digital Core Model Construction

A method and system for analysis of a digital core image obtained from a sample are disclosed. The method includes performing segmentations on the digital core image using multiple approaches to obtain multiple segmented images which are statistically analyzed to select the most suitable approach of the multiple approaches. Thereafter, a digital core model is generated using the segmented image corresponding to the most suitable approach. A simulation test may be performed on the digital core model to obtain a model test result and an oilfield operation may be performed based on the model test result. The system includes measurement and testing equipment to obtain the digital core image and a computing system including a data repository for storing a digital core image and a digital core model, and a digital core modeling tool. The digital core modeling tool performs the segmentations, statistical analysis, and generates the digital core model.

Structured detectors and detector systems for radiation imaging

Detector module designs for radiographic imaging include first and second layers of scintillator rods or pixel arrays oriented in first and second directions. The first and second directions are transversely oriented to define a light sharing region between the first and second layers. Encoding features may be disposed in, on or between the first and second layers, and configured to modulate propagation of optical signals therealong or therebetween.

Scanning Method And Apparatus Comprising A Buoyancy Material For Scanning An Underwater Pipeline Or A Process Vessel

The invention discloses a scanning method and apparatus suitable for scanning a pipeline or process vessel in which a beam of gamma radiation from a source is emitted through the vessel to be detected by an array of detectors which are each collimated to detect radiation over a narrow angle relative to the width of the emitted radiation beam. 1. An apparatus for inspecting an underwater pipeline to determine wall thickness or information about contents of the pipeline , the apparatus comprising:a gamma radiation source;an array of detector units; anda data acquisition unit,wherein the gamma radiation source and the array of detector units are mounted to enable an underwater pipeline to be interposed between the gamma radiation source and the array of detector units so that gamma radiation emitted by the gamma radiation source passes along a plurality of paths through a portion of the pipeline and impinges upon the array of detector units,wherein the data acquisition unit is configured to acquire data at a plurality of radially offset positions around the pipeline to acquire density data at a variety of angles through the pipeline when the underwater pipeline is interposed between the gamma radiation source and the array of detector units in order to produce a representation of the pipeline or contents of the pipeline using the density data, andwherein the apparatus further comprises a buoyancy material.2. The apparatus according to claim 1 , wherein at least one of the source and detector units are rotatable around a circumference of the pipeline when acquiring data.3. The apparatus according to claim 1 , wherein the apparatus is hinged so that the apparatus is configured to be opened and closed around the pipeline.4. The apparatus according to claim 1 , wherein the representation is a representation of the composition of the pipeline or its contents.5. The apparatus according to claim 1 , wherein the apparatus comprises a tomography algorithm for building the ...

X-ray Tomographic Inspection System for the Identification of Specific Target Items

The present invention provides for an improved scanning process with a stationary X-ray source arranged to generate X-rays from a plurality of X-ray source positions around a scanning region, a first set of detectors arranged to detect X-rays transmitted through the scanning region, and at least one processor arranged to process outputs from the first set of detectors to generate tomographic image data. The X-ray screening system is used in combination with other screening technologies, such as NQR-based screening, X-ray diffraction based screening, X-ray back-scatter based screening, or Trace Detection based screening. 1. A method for identifying objects in a container , comprising:performing a first stage screening, comprising: arranging a stationary X-ray source to generate X-rays from a plurality of X-ray source positions around a scanning region, arranging a first set of detectors to detect X-rays transmitted through the scanning region, and arranging a second set of detectors to detect X-rays scattered within the scanning region;processing data output from the first set of detectors using at least one processor to generate at least one tomographic image;processing data output from the second set of detectors to generate scatter image data; and,performing a second stage screening comprising at least one of a NQR-based screening process, X-ray diffraction based screening process, X-ray backscatter based screening process, or trace detection based screening process.2. The method of wherein the at least one processor outputs data indicative of a suspect object in the container.3. The method of wherein the at least one processor outputs a signal indicating said container should be subject to the second stage screening only if the first stage screening identifies a suspect object in the container.4. The method of wherein the at least one processor outputs a signal indicating said container should not be subject to the second stage screening only if the first stage ...

METHOD FOR CONTROLLING X-RAY EXPOSURE

The present invention pertains to a system and method for X-ray imaging wherein a targeted fluence at the detector for projection images can be achieved at a plurality of projection angles around the imaging subject by control of exposure times implemented during image acquisition. Exposure time for a second projection image may be determined by the fluence in a first projection image, and in a third projection image by the fluence in a second projection image, where projection images are acquired within two degrees of one another. An acquisition parameter calculation can be configured to calculate acquisition parameters, such as said exposure times, to achieve the targeted fluence in projection images and can be coupled to a rotation controller that implements the acquisition parameters by controlling a relative angle between the imaging subject and X-ray image acquisition device. 1. A method of acquiring an X-ray image of an object comprising:positioning said object in field of view of an X-ray image acquisition device;selecting a set of a plurality of unique projection angles between said X-ray image acquisition device and an axis through said object, wherein said set spans at least 45 degrees around said object;selecting a targeted X-ray exposure at a detector region for each of said projection angles;determining a targeted total exposure time for each of said projection angles corresponding to said targeted X-ray exposure;implementing said plurality of targeted total exposure times in said X-ray image acquisition device over said set of projection angles to acquire an image data set; andreconstructing an X-ray image from said image data set.2. The method of further comprising:increasing said targeted exposure time with at least one of said projection angles based on increase of attenuation at said projection angle.3. The method of further comprising:reducing saturation of said detector by reducing said targeted exposure time with at least one of said projection ...

Detector implementations for x-ray detectors

There is provided an x-ray detector including a number of adjacent detector modules arranged in a configuration having central parts and peripheral parts. The x-ray detector is configured to have higher dose efficiency in the central parts and lower dose efficiency in the peripheral parts.

COMPUTER-IMPLEMENTED METHOD FOR ANALYSING MEASUREMENT DATA FROM A MEASUREMENT OF AN OBJECT

A computer-implemented method for analysing measurement data from a measurement of an object to assess whether the object corresponds to a target condition, by the following steps: determining measurement data of a plurality of objects; determining analysis data records from the measurement data, an analysis data record being assigned to one of the objects and having at least one analysis result about the conformity of the assigned object to the target condition; checking, by a user, some of the analysis results; adapting an analysis result if the checking results in a different analysis result about the conformity; and transmitting the adapted analysis data records to a learning algorithm that modifies itself on the basis of the adapted analysis data records, in order to determine analysis data records from additional measurement data of objects; and the steps are carried out one after another or with an at least partial temporal overlap. 1. A computer-implemented method for analyzing measurement data from a measurement of an object , wherein the analysis assesses whether the object corresponds to a target state , wherein the method comprises the following steps:determining measurement data of a plurality of objects;determining analysis data sets from the measurement data for the objects, wherein an analysis data set is assigned to one of the objects and has at least one analysis result about the conformity of the assigned object to the target state;checking, by a user, the analysis results of at least some of the analysis data sets;adapting an analysis result of a checked analysis data set if the checking by the user yields a deviating analysis result about the conformity of the assigned object to the target state; andcommunicating at least the adapted analysis data sets to an adaptive algorithm, wherein the adaptive algorithm modifies itself on the basis of the adapted analysis data sets in order to determine analysis data sets from further measurement data of ...

Systems and methods for measuring relative permeability from unsteady state saturation profiles

An example system for obtaining relative permeability from unsteady state saturation profiles is described herein. The system can include a pressure source configured to inject a first fluid into a core, and a nondestructive test (NDT) device configured to measure a saturation profile of a second fluid along the core. The saturation profile of the second fluid can be measured at each of a plurality of times. The system can also include a processor and a memory in operative communication with the processor. The processor can be configured to estimate one or more parameters related to conditions of the core directly from the respective saturation profiles, and calculate the relative permeability using the one or more parameters.

NOVEL DATA PROCESSING IN A TOMOGRAPHIC IMAGING APPARATUS

A method of investigating a specimen using a tomographic imaging apparatus comprising: 2. A method according to claim 1 , wherein said mathematical filtering operation serves to manipulate a frequency spectrum of said initial tomogram in Fourier space.3. A method according to claim 1 , wherein said mathematical filtering operation employs a space-invariant filter.4. A method according to claim 1 , wherein claim 1 , for at least one iteration:the initial tomogram has a first resolution;the adjusted tomogram has a second resolution, different to said first resolution.5. A method according to claim 4 , wherein said first resolution is lower than said second resolution.6. A method according to claim 4 , wherein said first resolution is higher than said second resolution.7. A method according to claim 1 , comprising the following additional steps:comparing given calculated images to corresponding initial images, and calculating a set of transformations necessary to map the former onto the latter; andusing said set of transformations to modify the initial images used in the production of an initial tomogram of a subsequent iteration.8. A method according to claim 1 , wherein said relative motion of the source with respect to the specimen traces out a locus selected from the group comprising a substantially circular curve claim 1 , a substantially helical curve claim 1 , and combinations hereof.9. A method according to claim 1 , comprising:considering a virtual reference surface that surrounds the specimen and is substantially centered thereon;considering an incoming point of intersection of each of said viewing axes with this reference surface, thereby generating a set of such intersection points corresponding to said series of viewing axes; andchoosing discrete viewing axes in said series so as to cause said set to comprise a two-dimensional lattice of points located areally on said reference surface in a substantially uniform distribution.11. A charged-particle ...

CORE ANALYSIS SYSTEM AND RELATED METHODS

Embodiments include systems and methods for determining properties of a formation including disposing a core sample of the formation within a core holder assembly, applying pressures to the core sample, rotating the core sample about a center longitudinal axis of the core holder assembly, obtaining a series of computed tomography images of the core sample at different rotation increments of the core sample, generating, based at least partially on the obtained series of computed tomography images of the core sample, a 3D representation of the core sample utilizing a radon transform, measuring a displacement of at least one characteristic of the core sample due to the applied pressures, and based at least partially on the measured displacement, determining at least one property of the formation as a function of the applied pressures. 1. A method of determining properties of a core sample , the method comprising:disposing a core sample of a formation within a core holder assembly;applying one or more pressures to the core sample;obtaining at least one computed tomography image of the core sample; andbased on the at least one computed tomography image of the core sample, determining at least one property of the core sample as a function of the applied one or more pressures.2. The method of claim 1 , wherein applying one or more of pressures to the core sample comprises applying at least one of an axial pressure claim 1 , a radial pressure claim 1 , or a pore fluid pressure to the core sample.3. The method of claim 1 , wherein obtaining at least one computed tomography image of the core sample comprises:rotating the core sample about a longitudinal axis of the core holder assembly; andobtaining a series of computed tomography images of the core sample, wherein the series of computed tomography images includes an image for at least every degree of rotation of the core sample.4. The method of claim 3 , wherein the series of computed tomography images includes an image for ...

SYSTEM AND METHOD FOR IMAGING A PATIENT

A system for imaging a subject is provided. The system includes a radiation source, a radiation detector, and a controller. The radiation source is operative to transmit electromagnetic rays through the subject. The radiation detector is operative to receive the electromagnetic rays after having passed through the subject so as to generate a plurality of projections of the subject. The controller is operative to display one or more selectively adjustable markers that define an image stack. The controller is further operative to reconstruct one or more images within the image stack based at least in part on the plurality of projections. Reconstruction of the one or more images is on demand. 1. A system for imaging a subject comprising:a radiation source operative to transmit electromagnetic rays through the subject;a radiation detector operative to receive the electromagnetic rays after having passed through the subject so as to generate a plurality of projections of the subject; and display one or more selectively adjustable markers that define an image stack;', 'reconstruct one or more images within the image stack based at least in part on the plurality of projections; and, 'a controller operative towherein reconstruction of the one or more images is on demand.2. The system of claim 1 , wherein the controller is further operative to:display a reference image that depicts at least one of an orientation and a size of the image stack.3. The system of claim 2 , wherein the reference image is at least one of an optical image of the subject claim 2 , a depth image of the subject; a scout image of the subject claim 2 , and an image of the system.4. The system of claim 1 , wherein the controller reconstructs the one or more images on demand after at least one of the one or more selectively adjustable markers has been selectively adjusted.5. The system of claim 1 , wherein a first marker of the one or more selectively adjustable markers corresponds to a first end of the ...

METHOD AND SYSTEM FOR DETERMINING ENERGY-BASED BRITTLENESS

A method may include determining an energy factor based on scratch test data and ultrasonic wave data regarding a geological region of interest. The method may further include determining an amount of inelastic energy regarding the geological region of interest using triaxial compression data and rock property data. The method may further include determining a tensile strength regarding the geological region of interest using Brazilian test data. The method may further include generating a geomechanical model regarding the geological region of interest using the energy factor and the amount of inelastic energy. The geomechanical model may include various brittleness values for the geological region of interest. The method may further include determining an injection fluid pressure to induce a hydraulic fracture at a predetermined location in the geological region of interest using the geomechanical model, the tensile strength, and fracture plane roughness data. 1. A method , comprising:determining, by an computer processor, an energy factor based on scratch test data and ultrasonic wave data regarding a geological region of interest;determining, by the computer processor, an amount of inelastic energy regarding the geological region of interest using triaxial compression data and rock property data;determining, by the computer processor, one or more tensile strengths regarding the geological region of interest using Brazilian test data;generating, by the computer processor, a geomechanical model regarding the geological region of interest using the energy factor and the amount of inelastic energy, wherein the geomechanical model comprises a plurality of brittleness values for the geological region of interest; anddetermining, by the computer processor, an injection fluid pressure to induce a hydraulic fracture at a predetermined location in the geological region of interest using the geomechanical model, the one or more tensile strengths, and fracture plane ...

SYSTEMS AND METHODS FOR IMAGING AND PROCESSING TISSUE

In accordance with preferred embodiments of the present invention, a method for imaging tissue, for example, includes the steps of mounting the tissue on a computer controlled stage of a microscope, determining volumetric imaging parameters, directing at least two photons into a region of interest, scanning the region of interest across a portion of the tissue, imaging a plurality of layers of the tissue in a plurality of volumes of the tissue in the region of interest, sectioning the portion of the tissue, capturing the sectioned tissue, and imaging a second plurality of layers of the tissue in a second plurality of volumes of the tissue in the region of interest, and capturing each sectioned tissue, detecting a fluorescence image of the tissue due to said excitation light; and processing three-dimensional data that is collected to create a three-dimensional image of the region of interest. Further, captured tissue sections can be processed, re-imaged, and indexed to their original location in the three dimensional image. 1. A method for automated imaging and storage of tissue samples comprising:illuminating a first region of tissue with light using a multiphoton imaging microscope;detecting light from the tissue in response to the illuminating light to form an image of the first region of tissue;sectioning a portion of the imaged tissue to expose a second region of tissue;transporting the first portion of tissue;illuminating the second region of tissue;detecting light from the second region of tissue to form an image of the second region of tissue;sectioning a second portion from the second region of tissue;transporting the second portion of tissue;andfurther processing at least one sectioned tissue sample to generate processed tissue data;analyzing the processed tissue data in combination with the images of the first region of tissue and the second region of tissue.2. The method of wherein the analyzing step further comprises indexing the processed tissue images ...

Contact pressure measuring apparatus, method of manufacturing the same and method of measuring contact pressure

An apparatus and method for measuring a contact pressure and a method of manufacturing the apparatus. The apparatus includes: a material layer configured to provide a light path along which incident light travels to a subject being in contact with the material layer; a spectrum analyzer configured to detect light emitted from the material layer and perform a light absorption spectrum analysis on the detected light to determine an intensity of the detected light; and a pressure calculator configured to determine the contact pressure of the subject based on the determined intensity.

SPECIMEN RADIOGRAPHY WITH TOMOSYNTHESIS IN A CABINET WITH GEOMETRIC MAGNIFICATION

The aspects of the present disclosure are directed to a method and system for producing tomosynthesis images of a breast specimen with the capability of attaining images with geometric magnification. In one embodiment, an x-ray source delivers x-rays through a specimen of excised tissue and forms an image at a digital x-ray detector with the resultant image enlarging as the specimen is moved closer to the x-ray source. Multiple x-ray images are taken as the x-ray source moves relative to the stationary breast specimen. In the preferred embodiment, the x-ray source moves in a range from about 350° to and including about 10°. The source may travel substantially along a path that generally defines an arc, or linearly, while the detector remains stationary throughout and the source remains substantially equidistant from the specimen platform. The set of x-ray image data taken at the different points are combined to form a tomosynthesis image that can be viewed in different formats, alone or as an adjunct to conventional specimen radiography. In one embodiment, the system is enclosed or housed within a cabinet X-ray structure. 1. A cabinet x-ray system for of obtaining geometric magnifying specimen x-ray images , projection x-ray images , and reconstructed tomosynthetic x-ray images of the specimen , the system comprising:a moveable cabinet defining a walled enclosure surrounding an interior chamber and a door configured to cover the interior chamber;an x-ray source, a flat panel digital x-ray detector, a specimen platform including a magnification tray that is positioned at a distance above the flat panel digital x-ray detector to facilitate geometric magnification imaging of the specimen in the cabinet and a motion control mechanism configured for moving the x-ray source to or along a plurality of positions within the interior chamber relative to the specimen disposed on the specimen platform; a) selectively energize the x-ray source to emit x-rays through the specimen ...

SINOGRAM-BASED SCATTERED RAY CORRECTION IN COMPUTER TOMOGRAPHY

A method is for scattered ray correction of projection measurement data recorded by a computer tomography system. In an embodiment, the method includes recording, localizing, identifying and correcting. In the recording, projection measurement data is recorded from a plurality of projection angles and the projection measurement data is captured in a sinogram. In the localizing, features in the projection measurement data of the sinogram are localized in a defined angle range about a projection angle. In the identifying, a scatter distribution for the projection angle is identified from the localized features by way of a trained identification algorithm. In the correcting, the projection measurement data of the projection angle is corrected on the basis of the scatter distribution. 1. A method for correction of projection measurement data recorded by a computer tomography system , comprising:recording projection measurement data from a plurality of projection angles and capturing the projection measurement data in a sinogram;localizing features in the projection measurement data of the sinogram in an angle range about a projection angle;identifying a scatter distribution for the projection angle from the localized features by way of a trained identification algorithm; andcorrecting the projection measurement data of the projection angle on the basis of the identified scatter distribution.2. The method of claim 1 , wherein the trained identification algorithm is based on a machine learning process claim 1 , a statistical method claim 1 , a mapping rule claim 1 , mathematical functions or an artificial neural network.3. The method of claim 1 , wherein the features include at least one of width claim 1 , position claim 1 , intensity claim 1 , shape and morphology of the attenuation in the projection measurement data.4. The method of claim 1 , wherein the scatter distribution includes at least one of intensity entries claim 1 , count entries and energy entries of ...

METHOD FOR DIGITALLY CHARACTERIZING THE PERMEABILITY OF ROCK

The present invention provides a method for estimating the permeability of rock from a digital image of the rock. A three-dimensional image of a rock is obtained and segmented, and an image permeability is determined from the segmented image of the rock. Permeability correction factors are obtained from the segmented image and from a non-wetting liquid capillary pressure curve derived from the segmented image, and the permeability correction parameters are applied to the image permeability to obtain a corrected image permeability of the rock. 1. A method for estimating the permeability of rock , comprising:obtaining a three-dimensional image of a rock wherein the image is comprised of a plurality of voxels and the image has a resolution;processing the three-dimensional image of the rock to segment the image by selecting each voxel of the image to represent either pore space in the rock or solid material in the rock;estimating an image permeability of the rock from the segmented three-dimensional image of the rock;deriving a non-wetting liquid capillary pressure curve from the segmented three-dimensional image of the rock;determining one or more permeability correction factors from the segmented three-dimensional image and the non-wetting liquid capillary pressure curve; andapplying the one or more permeability correction factors to the image permeability of the rock to obtain a corrected permeability of the rock.2. The method of claim 1 , wherein the three-dimensional image of the rock is obtained by x-ray computer tomography.3. The method of claim 1 , wherein the rock is obtained from a hydrocarbon-bearing formation comprised of sandstone claim 1 , carbonate claim 1 , shale and combinations thereof.4. The method of claim 1 , wherein the non-wetting liquid is mercury or Wood's metal.5. The method of claim 1 , wherein the image permeability of the rock is estimated by computation in a permeability simulation method utilizing the segmented three-dimensional image of ...

DYNAMIC RADIATION COLLIMATION FOR NON-DESTRUCTIVE ANALYSIS OF TEST OBJECTS

For each respective first-phase rotational position of a set of first-phase rotational positions, an imaging system may generate a respective first-phase image. The imaging system may determine, based on an identified region of interest in the respective first-phase image, collimator blade positions for the respective first-phase rotational position. For each respective second-phase rotational position of a set of second-phase rotational positions, the imaging system may determine, based on the collimator blade positions for the first-phase rotational positions, collimator blade positions for the respective second-phase rotational position. The imaging system may generate a respective second-phase image in a second series of images while the test object is at the respective second-phase rotational position and while the collimator blades are at the collimator blade positions for the respective second-phase rotational position. The imaging system may compute, based on the second series of images, tomographic data for the portion of the test object. 1. A method for generating tomographic data of a test object , the method comprising: generating, by an imaging system, a respective first-phase image in a first series of images, the respective first-phase image being generated while the test object is at the respective first-phase rotational position;', 'identifying, by the imaging system, a region of interest (ROI) in the respective first-phase image, the ROI corresponding to a portion of the test object being evaluated; and', 'determining, by the imaging system, based on the identified ROI in the respective first-phase image, collimator blade positions for the respective first-phase rotational position, wherein radiation is emitted by a radiation generator and passes through an aperture of a collimator, the collimator is positioned between the radiation generator and a radiation detector, the test object is positioned between the radiation generator and the radiation ...

METHOD FOR MEASURING MICRO-SCALE STRENGTH AND RESIDUAL STRENGTH OF BRITTLE ROCK

A method for measuring micro-scale strength and residual strength of brittle rocks, including: performing micro-CT scanning on a target area; obtaining loading and unloading curves and an elastic modulus of the rock via micro indentation experiment; performing dimensionless analysis based on Buckinham's π-theorem to obtain relation between the loading and unloading curves and elastic modulus, indentation depth, initial and residual strengths; reconstructing a grid model of micro rock matrix at the target area and indenter; performing micro indentation numerical simulation based on Mohr-Coulomb criterion to obtain loading and unloading curves under different strengths and residual strengths; fitting a formula between simulated work of the indenter and initial and residual strengths at h/R of 0.1 and 0.15; and substituting experimental values of the work into the formula to plotting curves of initial and residual strengths under two indentation depths, where coordinates of an intersection point represent micro-scale initial and residual strengths. 1. A method for measuring micro-scale strength and residual strength of brittle rocks , comprising:(1) performing a dimensionless analysis of a work of the indenter during a loading process before a micro indentation experiment;(2) selecting and preparing a rock sample, obtaining the microstructure characteristics via CT scanning and reconstructing a finite element grid model of the rock matrix and the indenter in combination with a digital rock modeling technique;(3) carrying out the micro indentation experiment on the rock sample to obtain micro elastic modulus of the rock sample according to an indentation experiment specification; and calculating the work of the indenter at different feature depths h/R;(4) performing a micro indentation numerical simulation for the rock sample under different strengths and residual strengths based on the micro elastic modulus obtained in the micro indentation experiment to obtain loading ...

DETECTOR ARRAY FOR IMAGING MODALITY

A detector array is provided for detecting radiation photons. The detector array includes a phosphor screen that converts radiation photons into light energy. The detector array includes a photodiode array having a plurality of photodiodes that convert the light energy into electrical charge. A first photodiode of the plurality of photodiodes is spaced apart from a second photodiode of the plurality of photodiodes to define a non-detection region. The phosphor screen overlies the first photodiode, the second photodiode, and the non-detection region between the first photodiode and the second photodiode. 1. A computed tomography (CT) imaging modality comprising:a stator;a rotor configured to rotate relative to the stator; and a phosphor screen configured to convert the radiation photons into light energy; and', a first photodiode of the plurality of photodiodes is spaced apart from a second photodiode of the plurality of photodiodes to define a non-detection region; and', 'the phosphor screen overlies the first photodiode, the second photodiode, and the non-detection region between the first photodiode and the second photodiode., 'a photodiode array comprising a plurality of photodiodes configured to convert the light energy into electrical charge, wherein], 'a detector array coupled to one of the stator or the rotor and configured to detect radiation photons, the detector array comprising2. The CT imaging modality of claim 1 , wherein the phosphor screen comprises GdOS:Pr.3. The CT imaging modality of claim 1 , wherein the phosphor screen comprises GdOS:Tb.4. The CT imaging modality of claim 1 , wherein there is no reflective material between a first portion of the phosphor screen over the first photodiode and a second portion of the phosphor screen over the second photodiode.5. The CT imaging modality of claim 1 , wherein a third photodiode of the plurality of photodiodes is spaced apart from the first photodiode of the plurality of photodiodes to define a second ...

X-ray detection method and x-ray detector

An X-ray detection method and an X-ray detector are provided. The X-ray detection method according to embodiments of the present disclosure includes: dividing an energy range of photons emitted by an X-ray source into a number N of energy windows, where N is an integer greater than 0; obtaining a weighting factor for each of the number N of energy windows based on linear attenuation coefficients of a substance of interest and a background substance of an imaging target; obtaining a weighting factor matrix for M output channels of an X-ray detector based on the weighting factor for each of the number N of energy windows, where M is an integer greater than 0; and obtaining output results of the M output channels based on the weighting factor matrix and numbers of photons having an energy range falling into individual energy windows of the number N of energy windows.

Image display device, image display method and image display program

When at least one of a two-dimensional radiological image and a plurality of tomographic images of the same subject is displayed on a monitor, a depth map creation unit creates a depth map in which each position on the pseudo two-dimensional image is associated with depth information indicating the position of a tomographic plane corresponding to each position in a depth direction. A display control unit specifies the depth information of a predetermined position in the two-dimensional radiological image, with reference to the depth map, and displays the tomographic image of the tomographic plane indicated by the specified depth information on the monitor.

INSPECTION METHOD FOR ELECTRODE STRUCTURAL BODY

The disclosure provides an inspection method determining whether there is a defect in an electrode structural body including a cathode electrode layer, an electrolyte layer and an anode electrode layer electrode by an image processor. The inspection method includes a step of scanning the electrode structural body along a scanning direction to obtain a continuous transmission image, a step of digitizing a shade of each pixel of the transmission image, a step of calculating a difference value between a grayscale of a specific pixel and a median value of grayscales of comparison pixels located in front or rear of the specific pixel along the scanning direction, and a step of determining presence or absence of the defect according to the difference value and a predetermined threshold value. 1. An inspection method for an electrode structural body , the inspection method determining by a computer whether there is a defect in the electrode structural body comprising a cathode electrode layer , an electrolyte layer and an anode electrode layer , the inspection method comprising:a first step comprising scanning the electrode structural body along a scanning direction to obtain a continuous transmission image of the electrode structural body;a second step comprising digitizing a shade of each pixel of the transmission image;a third step comprising calculating a difference value between a value calculated according to a grayscale of a specific pixel and a value calculated according to a plurality of grayscales of a plurality of comparison pixels located in front or rear of the specific pixel along the scanning direction; anda fourth step comprising determining presence or absence of the defect according to a comparison performed between the difference value and a predetermined threshold value.2. The inspection method of claim 1 , wherein in an edge region located on two sides of the electrode structural body with respect to the scanning direction claim 1 , neither of the ...

Photon-counting ct-system with reduced detector counting-rate requirements

Various of the disclosed embodiments contemplate systems and methods that compensate for the limited dynamic range of certain X-Ray detector systems, such as CAT-Scan detector systems. In some embodiments, the system alternates between different photon emission flux values and then gives more consideration to an attenuation value associated with a more favorable detection flux. In this manner, different object densities may be accounted for and may be more properly imaged despite the particular characteristics of the X-Ray system.

ARRANGEMENT FOR X-RAY TOMOGRAPHY

A method of investigating a specimen using X-ray tomography, comprising (a) mounting the specimen to a specimen holder, (b) irradiating the specimen with a beam of X-rays along a first line of sight through the specimen, and (c) detecting a flux of X-rays transmitted through the specimen and forming a first image. Then (d) repeating the steps (b) and (c) for a series of different lines of sight through the specimen, thereby producing a corresponding series of images. The method further comprises (e) performing a mathematical reconstruction on said series of images, so as produce a tomogram of at least part of the specimen, wherein the specimen is disposed within a substantially cylindrical metallic shell with an associated cylindrical axis, the beam of X-rays is produced by directing a beam of charged particles onto a zone of said metallic shell, so as to produce a confined X-ray source at said zone, and the series of different lines of sight is achieved by rotating said shell about said cylindrical axis, thereby causing relative motion of said zone relative to the specimen. 1. A method of investigating a specimen using X-ray tomography , comprising:(a) mounting a specimen to a specimen holder;(b) irradiating the specimen with a beam of X-rays along a first line of sight through the specimen;(c) detecting a flux of X-rays transmitted through the specimen and forming a first image;(d) repeating steps (b) and (c) for a series of different lines of sight through the specimen, thereby producing a corresponding series of images; and(e) performing a mathematical reconstruction on the series of images, so as produce a tomogram of at least part of the specimen;wherein the specimen is disposed within a substantially cylindrical metallic shell with an associated cylindrical axis and the beam of X-rays is produced by directing a beam of charged particles onto a zone of the metallic shell so as to produce a confined X-ray source at the zone; andwherein the series of different ...

Stationary ct apparatus

A stationary CT apparatus and a method of controlling the same. The stationary CT apparatus includes: a scanning passage; a stationary carbon nanotube X-ray source arranged around the scanning passage and comprising a plurality of ray emission focal spots; and a plurality of stationary detector modules arranged around the scanning passage and disposed opposite the X-ray source. At least some of the plurality of detector modules are arranged in a substantially L shape or a substantially Π shape when viewed in a plane intersecting the scanning passage. Reconstruction of the CT apparatus without a rotary gantry is achieved and special substances in an object under inspection is identified by optimizing design of the carbon nanotube X-ray source and the detector device. The invention ensures that the stationary gantry type CT system has a small size and a high accuracy and is particularly suitable for safety inspection of baggage.

X-RAY CT APPARATUS AND CONTROL METHOD FOR THE X-RAY CT APPARATUS

In order to appropriately reduce time until scanning can be started after preparation in both an operation console and a scan room is completed, art X-ray CT apparatus includes an X-ray tube, an X-ray detector, a rotation disk, an image calculation device, a display device, a system control device, an operation console instruction device that, instructs the system control device to prepare, start, and stop scanning in an operation console, and a scan gantry instruction device that instructs the system control device to prepare, start, and stop scanning in a scan room, in which the system control device includes a scanning preparation control unit that, performs some scanning preparation processes among a plurality of scanning preparation processes on the basis of an instruction for scanning preparation from the operation console instruction device or the scan gantry instruction device. 1. An X-ray CT apparatus comprising:an X-ray source that, irradiates an object with X-rays;an X-ray detector that is disposed to oppose the X-ray source and detects X-rays having been transmitted through the object;a rotation disk that is mounted with the X-ray source and the X-ray detector, and is rotated around the object;an image reconstruction device that reconstructs a tomographic image of the object on the basis of a transmitted X-ray dose detected by the X-ray detector;an image display device that displays the tomographic image reconstructed by the image reconstruction device;a system control device that controls the respective devices so as to perform scanning;an operation console instruction device that instructs the system control device to prepare, start, and stop scanning in an operation console; anda scan gantry instruction device that instructs the system control device to prepare, start, and stop scanning in a scan room,wherein the system control device includes a scanning preparation control unit that performs some scanning preparation processes among a plurality of ...

METHOD FOR GENERATING X-RAY IMAGE DATA, X-RAY SYSTEM AND DATA PROCESSING UNIT

A mathematical scattered radiation model with a number of parameters is specified. A test object is scanned with an X-ray system to generate a first raw dataset. The test object is scanned again to generate a second raw dataset, this time with an intermediary X-ray mask having at least one X-ray transparent region and at least one X-ray non-transparent region between the X-ray source and the test object. Parameter values are determined based on the first raw dataset and on the second raw dataset, and the scattered radiation model is calibrated with the parameter values. An examination object is scanned with the X-ray system to generate a third raw dataset and the third raw dataset is processed with the calibrated scattered radiation model to generate a corrected third raw dataset. A set of X-ray image data is generated from the examination object based on the corrected third raw dataset. 1. A method of generating X-ray image data by way of an X-ray system having an X-ray source and an X-ray detector with a number of regularly arranged pixels , the method comprising:specifying a mathematical scattered radiation model with a plurality of parameters;scanning a test object by way of the X-ray system to generate a first raw dataset;inserting an X-ray mask with at least one region that is transparent to X-rays and with at least one region that is non-transparent to X-rays between the X-ray source and the test object, and scanning the test object by way of the X-ray system with the X-ray mask inserted to generate a second raw dataset;using the first raw dataset and the second raw dataset as a basis for determining parameter values for the parameters of the scattered radiation model, and calibrating the scattered radiation model with the parameters;scanning an examination object by way of the X-ray system to generate a third raw dataset;processing the third raw dataset with the calibrated scattered radiation model to generate a corrected third raw dataset; andusing the ...

SYSTEMS AND METHODS FOR IMAGE RECONSTRUCTION AT HIGH COMPUTED TOMOGRAPHY PITCH

Methodologies, systems, apparatus, and non-transitory computer-readable media are described herein to facilitate acquisition of volumetric data and volumetric image reconstruction. An imaging system can be configured to transport an object at a speed relative to the scan path of an X-ray source such that insufficient measurement data is collected for classically complete geometrical coverage. Iterative image reconstruction techniques may be used to generate volumetric images based on measured volumetric data of at least a portion of the object. 1. An imaging device comprising:a transport system to transport an object;an X-ray source to emit a conical beam of X-ray radiation at a plurality of points along a trajectory of at least 180° about a direction of transport of the object to irradiate at least a portion of the object;a detector array to detect measurement data indicative of an interaction of the X-ray radiation with at least the portion of the object, the detector array disposed relative to the X-ray source to detect the measurement data along a scan path about the object; [ the first mode controlling a speed of the transport system relative to the scan path to cause the detector array to detect measurement data that is sufficient for complete pi-line coverage;', 'the second mode controlling the speed of the transport system relative to the scan path to cause the detector array to detect measurement data that is insufficient for complete pi-line coverage; and, 'operate the imaging device in one of a first mode or a second mode, 'compute reconstructed volumetric data representative of a volume of the object in the first mode or the second mode by applying at least one iteration of an iterative reconstruction to the measurement data to derive the reconstructed volumetric data., 'a processing unit having a central processing unit programmable to2. The imaging device of wherein the processing unit is further programmable to derive a volumetric image of the volume ...

IMAGE GENERATION USING MACHINE LEARNING

The present approach relates to the training of a machine learning algorithm for image generation and use of such a trained algorithm for image generation. Training the machine learning algorithm may involve using multiple images produced from a single set of tomographic projection or image data (such as a simple reconstruction and a computationally intensive reconstruction), where one image is the target image that exhibits the desired characteristics for the final result. The trained machine learning algorithm may be used to generate a final image corresponding to a computationally intensive algorithm from an input image generated using a less computationally intensive algorithm. 1. A method for training a machine learning algorithm , comprising:accessing projection data or image data acquired using a tomographic system or systems;generating a plurality of image pairs, wherein each image pair comprises a first image generated using a first algorithm and a second image generated using a second algorithm, wherein for each respective image pair the first algorithm and the second algorithm are applied to the same projection or image data; andtraining the machine learning algorithm to emulate the characteristics of the second algorithm using the plurality of image pairs.2. The method of claim 1 , wherein the second algorithm comprises a target algorithm that is more computationally intensive than the first algorithm.3. The method of claim 1 , further comprising:using the trained machine learning algorithm to process images generated using the first algorithm to generate output images having superior quality characteristics similar to images generated using the second algorithm.4. The method of claim 1 , wherein the projection data or image data comprises computed tomography (CT) projection data claim 1 , the first algorithm is a first CT reconstruction algorithm claim 1 , and the second algorithm is a second CT reconstruction algorithm.5. The method of claim 1 , ...

AUTOMATED QUALITY CONTROL AND SELECTION

A non-destructive inspection method for inline inspection of an object comprises moving an object in between a radiation source and an image detector and through a three-dimensional scanner field of view, imaging the object using the image detector to obtain a projection radiograph of an internal structure of the object, scanning an exterior surface of the object using the 3D scanner, fitting a shape model of the object to a point cloud provided by the 3D scanner to obtain a surface model of the exterior surface, creating a solid model of the surface model by taking a grey value distribution of a reference object into account, simulating a reference radiograph from the solid model and comparing the reference and projection radiographs to detect internal deviations of the object. 120.-. (canceled)21. A non-destructive inspection method for inline inspection of an object , the non-destructive inspection method comprising:moving, using an inline transport system, an object, that is at least partially transparent to radiation of a predetermined radiation quality, along a predetermined path in between a radiation source, for emitting radiation of said predetermined radiation quality, and an image detector, and through a field of view of a three-dimensional scanner;imaging said object using the image detector by detecting said radiation emitted by the radiation source and transmitted through said object to obtain a projection radiograph of an internal structure of said object;scanning an exterior surface of said object using the three-dimensional scanner to obtain three-dimensional scanning data of said object in the form of a point cloud representative of at least part of said exterior surface;fitting, using a processor, a shape model of said object to said point cloud to obtain a surface model of said exterior surface;creating, using said processor, a solid model of said surface model by taking a grey value distribution of a reference object into account;simulating, ...

MULTIPLEXED COMPUTED TOMOGRAPHY X-RAY IMAGING

Methods, system and devices for multiplexed x-ray detection systems are described. The x-ray detection systems are designed using a multiplexed array of x-ray sources that are turned on simultaneously in groups of two or more x-ray sources to form multiple exposures that are detected by a plurality of detectors. The number of exposures, as well as x-ray source characteristics and parameters, such as the number and output energy level associated with each x-ray source are determined to optimize the quality of reconstrued images or maximize the detection/classification accuracy of object(s) and/or material(s) based on a total photon energy budget. The disclosed detection methods and devices improve both the quality and acquisition speed of x-ray images and x-ray measurement data for detection/classification of object(s) and/or material(s). 1. An x-ray detection system , comprising:a plurality of x-ray sources configured to illuminate an area designated for placement of an object from a plurality of different angles; anda plurality of detectors positioned in periphery of the area, each detector configured to receive x-ray radiation associated with one or more of the x-ray sources upon passage through the object, wherein:the x-ray sources are configured to selectively emit x-ray radiation toward the object in groups of two or more x-ray sources that are turned on simultaneously to provide a single exposure,each of the plurality of the x-ray sources is configured to turn on at a particular energy level above zero and below a predetermined maximum output energy level, andthe x-ray sources are configured to provide a plurality of exposures by selectively turning on a first group of two or more x-ray sources simultaneously to provide a first exposure and by selectively turning on one or more additional groups of two or more x-ray sources to provide additional exposures.2. The x-ray detection system of claim 1 , wherein each exposure is limited by a particular total energy ...

COORDINATE ALIGNMENT TOOL FOR COORDINATE MEASURING DEVICE AND MEASURING X-RAY CT APPARATUS

A coordinate alignment tool includes a base having at least two ground faces to hold an attitude suitable for measurement by a coordinate measuring device and an attitude suitable for measurement by a measuring X-ray CT apparatus, and a fixer to fixate a measured object to the base; and at least three master balls arranged on the base. 1. A coordinate alignment tool for a measuring X-ray CT apparatus and a coordinate measuring device , comprising: an attitude for measurement by the coordinate measuring device, and', 'an attitude for measurement by the measuring X-ray CT apparatus; and, 'a base having at least two ground faces to hold the base ata fixer configured to fix a measured object to the base.2. The coordinate alignment tool for the measuring X-ray CT apparatus and the coordinate measuring device according to claim 1 , wherein the attitude for measurement by the coordinate measuring device is an attitude which matches a reference plane of the coordinate measuring device and a reference plane of the measured object.3. The coordinate alignment tool for the measuring X-ray CT apparatus and the coordinate measuring device according to claim 1 , wherein the attitude for measurement by the measuring X-ray CT apparatus is an inclined attitude which facilitates obtaining an X-ray transmission image.4. The coordinate alignment tool for the measuring X-ray CT apparatus and the coordinate measuring device according to claim 1 , further comprising at least three master balls arranged on the base.5. The coordinate alignment tool for the measuring X-ray CT apparatus and the coordinate measuring device according to claim 2 , further comprising at least three master balls arranged on the base.6. The coordinate alignment tool for the measuring X-ray CT apparatus and the coordinate measuring device according to claim 3 , further comprising at least three master balls arranged on the base.7. The coordinate alignment tool for the measuring X-ray CT apparatus and the coordinate ...

SAMPLING OF SCANNING DEVICE

The present disclosure provides a sampling method and sampling apparatus of a scanning device. In at least one example, the sampling method comprises acquiring a ray attenuation variation at each of a plurality of scanning angles of the scanning device, determining a corrected sampling interval at each of the scanning angles of the scanning device by adjusting an initial sampling interval at each of the scanning angles of the scanning device according to the ray attenuation variation at each of scanning angles, and performing actual sampling according to the corrected sampling interval at each of the scanning angles of the scanning device. 1. A sampling method of a scanning device , comprising:acquiring a ray attenuation variation at each of a plurality of scanning angles of the scanning device;determining a corrected sampling interval at each of the scanning angles of the scanning device by adjusting an initial sampling interval at each of the scanning angles of the scanning device according to the ray attenuation variation at each of the scanning angles; andperforming actual sampling on a subject according to the corrected sampling interval at each of the scanning angles of the scanning device.2. The method according to claim 1 , wherein acquiring the ray attenuation variation at each of the plurality of scanning angles of the scanning device comprises:determining an attenuation value of scanning ray at each of the scanning angles; anddetermining a ray attenuation variation at each of the scanning angles according to the attenuation value of scanning ray at each of the scanning angles.3. The method according to claim 2 , wherein determining the ray attenuation variation at each of the scanning angles according to the attenuation value of scanning ray at each of the scanning angles comprises:taking each of the scanning angles as an interested scanning angle;taking an attenuation value of scanning ray at the interested scanning angle as a first attenuation value; ...

Tomography System and Method for Large-volume Recordings

A tomography system includes a first radiation source and a first detector that is assigned to the first radiation source. The tomography system also includes a second radiation source and a second detector that is assigned to the second radiation source. The tomography system is prepared to perform a scan. In a first plane of rotation, the first detector is guided along a first circular segment-shaped path. In a second plane of rotation, the second detector is guided in synchrony along a second circular segment-shaped path. The tomography system is configured to obtain a first data record with the first detector and a second data record with the second detector. The first plane of rotation and the second plane of rotation are arranged at a distance from one another. 1. A tomography system comprising:a first radiation source and a first detector that is assigned to the first radiation source;a second radiation source and a second detector that is assigned to the second radiation source,wherein the tomography system is configured to perform a scan,wherein in a first plane of rotation, the first detector is guided along a first circular segment-shaped path, while in a second plane of rotation, the second detector is guided in synchrony along a second circular segment-shaped path,wherein the tomography system is configured to obtain a first data record with the first detector and a second data record with the second detector, andwherein the first plane of rotation and the second plane of rotation are arranged at a distance from one another.2. The tomography system of claim 1 , wherein the tomography system is configured to generate a comprehensive two- claim 1 , three- or four-dimensional data record from the first data record and the second data record prior to an image reconstruction.3. The tomography system of claim 1 , wherein the tomography system is configured to generate a first two- claim 1 , three- or four-dimensional image from the first data record using a ...

SYSTEMS AND METHODS OF COMPARATIVE COMPUTED TOMOGRAPHY (CT) FOR QUALIFICATION OF COMMERCIAL GRADE ITEMS

A method of qualifying physical components using computed tomography (CT) includes obtaining qualified CT data from a CT scanner for at least one qualified physical component. Qualification data is generated based on the qualified CT data, where the qualification data defines a qualification envelope. Candidate CT data is obtained from the CT scanner for a candidate physical component. Comparison data is then generated based on the candidate CT data and the qualification data, where the comparison data indicates whether the candidate CT data is within the qualification envelope defined by the qualification data. An acceptance signal is generated if the comparison data meets acceptance criteria 1. A method of qualifying physical components using computed tomography (CT) , the method comprising the steps of:obtaining, via the processor, candidate CT data from the CT scanner for a candidate physical component;generating, via the processor, comparison data based on the candidate CT data and qualification data, where the qualification data defines a qualification envelope and where the comparison data indicates whether the candidate CT data is within the qualification envelope defined by the qualification data; andgenerating, via the processor, an acceptance signal if the comparison data meets acceptance criteria.2. The method of claim 1 , where the acceptance criteria requires that the entirety of the candidate CT data is within the qualification envelope defined by the qualification data.3. The method of claim 1 , where:the qualification data comprises a plurality of volumetric pixels (voxels);candidate CT data comprises a plurality of voxels; andthe comparison data comprises a plurality of voxels.4. The method of claim 3 , where each voxel comprises a three-dimensional (3D) location and material information.5. The method of claim 4 , where the material information comprises density information.6. The method of claim 5 , where a feature of the CT scanner comprises ...

Core Sample Analysis

A method and system for analyzing a core sample from a wellbore, where the analysis takes place in the field and proximate the wellbore. The system includes trailers adjacent one another. One of the trailers can include a unit for scanning the core sample and obtaining information within the sample. Other trailers can include units that further analyze the core, such as by grinding, laser spectroscopy, and Raman spectroscopy. The core sample scanning involves a computerized tomography (CT) scan, where a length of core is analyzed in the scanning unit. The unit includes a manipulator system for moving the core sample through a rotating scan source in the scanning unit. 1. A system for assessing a core sample comprising:a mobile enclosure;an analysis system within the mobile enclosure; anda loading assembly coupled to the analysis system and that selectively receives the core sample.2. The system of claim 1 , wherein the mobile enclosure comprises a first mobile enclosure claim 1 , the system further comprising a second mobile enclosure adjacent the first mobile enclosure;wherein the loading assembly projects into the second mobile enclosure.3. The system of claim 2 , further comprising a hatch assembly mounted between the first and second mobile enclosures and circumscribing the loading assembly.4. The system of claim 1 , wherein the analysis system comprises one of a scanning system and a spectroscopy system.5. The system of claim 1 , further comprising stations where sections of the core sample are removed for further analysis.6. The system of claim 1 , further comprising a manipulator in the first mobile enclosure having a core carrier on which the core sample is selectively disposed claim 1 , and that selectively reciprocates the core sample within the analysis system.7. The system of claim 6 , wherein the manipulator further comprises a manipulator base in the first mobile enclosure claim 6 , and a manipulator arm that is selectively and telescopingly urged ...

RADIATION DETECTOR

Disclosed herein is a detector, comprising: a pixel comprising a first subpixel and a second subpixel, wherein the first subpixel is configured to generate a first electrical signal upon exposure to radiation, and wherein the second subpixel is configured to generate a second electrical signal upon exposure to the radiation; wherein the detector is configured to determine a number of particles of the radiation incident on the first subpixel over a first period of time, based on the first electrical signal; wherein the detector is configured to determine an intensity of the radiation by integrating the second electrical signal over a second period of time. 1. A detector comprising:a pixel comprising a first subpixel and a second subpixel, wherein the first subpixel is configured to generate a first electrical signal upon exposure to radiation, and wherein the second subpixel is configured to generate a second electrical signal upon exposure to the radiation;wherein the detector is configured to determine a number of particles of the radiation incident on the first subpixel over a first period of time, based on the first electrical signal;wherein the detector is configured to determine an intensity of the radiation by integrating the second electrical signal over a second period of time.2. The detector of claim 1 , wherein the first period of time and the second period of time are the same.3. The detector of claim 1 , wherein the first subpixel abuts the second subpixel.4. The detector of claim 1 , wherein the detector is configured to measure energies of the particles of the radiation incident on the first subpixel claim 1 , based on the first electrical signal.5. The detector of claim 1 , wherein the pixel further comprises a third subpixel configured to generate a third electrical signal upon exposure to the radiation; and wherein the detector is configured to determine a number of particles of the radiation incident on the third subpixel over the first period of ...

SCANNING SYSTEMS AND RELATED METHODS

Scanning systems and related methods are provided. The scanning systems and methods may be computed tomography (CT) based scanning systems and methods. According to some aspects, the scanning systems have a reduced size compared to conventional scanning systems and may have similar throughput to some conventional scanning systems. According to some aspects, the scanning systems are reconfigurable into at least two scanning arrangements. Reduced size and/or reconfigurable scanning systems can allow an operator to dispose a scanning system in an environment that would not accommodate a conventional scanning system. Accordingly, the scanning systems described herein can provide enhanced security in some environments. 1. A scanning system comprising:a conveyor assembly;a scanner; and control the conveyor assembly to move at least one article at least one of into or out of the scanner; and', 'control the scanner to suspend radiation emission while the conveyor assembly is moving the at least one article at least one of into or out of the scanner., 'at least one processor configured to2. The scanning system of claim 1 , wherein:the scanner comprises at least one X-ray emitter;the at least one processor is configured to control the scanner to turn off the at least one X-ray emitter to suspend radiation emission.3. The scanning system of claim 2 , wherein:the scanner further comprises at least one shield curtain;the at least one article displaces the at least one shield curtain when the conveyor assembly moves the at least one article into or out of the scanner; andthe at least one processor is configured to control the scanner to turn off the at least one X-ray emitter while the at least one article displaces the at least one shield curtain.4. The scanning system of claim 1 , further comprising a sensor claim 1 , wherein the at least one processor is configured to determine a position of the at least one article using the sensor.5. The scanning system of claim 4 , wherein ...

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.

STRUCTURED DETECTORS AND DETECTOR SYSTEMS FOR RADIATION IMAGING

Detector module designs for radiographic imaging include first and second layers of scintillator rods or pixel arrays oriented in first and second directions. The first and second directions are transversely oriented to define a light sharing region between the first and second layers. Encoding features may be disposed in, on or between the first and second layers, and configured to modulate propagation of optical signals therealong or therebetween. 142-. (canceled)43. A detector module comprising:a first layer of scintillator elements, each extending in a first direction along the first layer;a second layer of scintillator elements, each extending in a second direction along the second layer, wherein the second direction is oriented transverse to the first direction such that the scintillator elements in the first and second layers are crossed;an intermediate layer disposed between the first and second layers; anda plurality of photodetectors including at least one of strip photodetectors with readout at both ends or continuous area photodetectors with readout at four corners, the photodetectors configured to convert optical signals generated by the scintillator elements into output characterizing radiation interacting in at least one of the first, second and intermediate layers.44. A detector module comprising:a first layer of scintillator elements, each extending in a first direction along the first layer;a plurality of photodetectors including at least one of strip photodetectors with readout at both ends or continuous area photodetectors with readout at four corners, the photodetectors configured to convert optical signals generated by the scintillator elements into output characterizing radiation interacting therein;a second layer of one or more semiconductor detector elements oriented edge on or face on with respect to the radiation; andan intermediate layer between the first and second layers.45. The detector module of claim 43 , wherein the intermediate ...

Image reconstruction based on parametric models

Systems and methods for modeling are provided. The method can include acquiring scan data associated with a plurality of x-ray projections of an item. The method can further include determining at least one closed boundary curve associated with the item. For example, the method can determine a first maximum area based on the scan data and determine at least one edge of the first maximum area. The method can further generate a model of the item using the closed boundary curve and a first material specific parameter for a material within the closed boundary curve. The method can utilize the model to generate computed scan data, compare the computed scan data to the scan data, and determine a goodness of fit. The method can further adjust the model of the item by altering at least one of the closed boundary curve and the material specific parameter.

RADIATION DETECTOR WITH AUTOMATIC EXPOSURE CONTROL AND A METHOD OF AUTOMATIC EXPOSURE CONTROL

Disclosed herein is a method comprising: determining doses of radiation received by a first set of pixels of a radiation detector; determining that the doses satisfy a criterion; adjusting exposure of the radiation detector to the radiation in response to the doses satisfying the criterion; and forming an image based on radiation received by a second set of pixels of the radiation detector. 1. A method comprising:determining doses of radiation received by a first set of pixels of a radiation detector;determining that the doses satisfy a criterion;adjusting exposure of the radiation detector to the radiation in response to the doses satisfying the criterion; andforming an image based on radiation received by a second set of pixels of the radiation detector;wherein the first set is a subset of the second set.2. (canceled)3. (canceled)4. The method of claim 1 , wherein the first set of pixels are in a same row or a same column of an array.5. The method of claim 1 , wherein determining the doses is based on electrical signals generated from the radiation received by the first set of pixels.6. The method of claim 1 , wherein the criterion is that a statistical characteristic of the doses is above a threshold.7. The method of claim 6 , wherein the statistical characteristic is a median of the doses.8. The method of claim 6 , wherein the statistical characteristic is a mean of the doses.9. The method of claim 6 , wherein the statistical characteristic is a ratio of doses exceeding a limit to the doses received by the first set of pixels.10. The method of claim 1 , wherein adjusting exposure of the radiation detector to the radiation in response to the doses satisfying the criterion comprises preventing the radiation from reaching the radiation detector.11. The method of claim 1 , wherein adjusting exposure of the radiation detector to the radiation in response to the doses satisfying the criterion comprises stopping producing the radiation.12. The method of claim 1 , ...

METHOD OF ANALYZING STRUCTURE OF RESIN MATERIAL

A structure analysis method includes impregnating a resin material with a radiosensitizer. The resin material contains thermoplastic resin. The radiosensitizer contains a solvent and a radiosensitizing molecule that contains, as a heavy element, an element with an atomic number equal to or greater than that of fluorine. A relative energy difference (RED) represented by R/Ris 1.8 or less in a case where Ris the interaction radius of the thermoplastic resin in a Hansen space and Ris a distance between the Hansen solubility parameters of the thermoplastic resin and the solvent. 1. A method of analyzing a structure of a resin material using radiation , the method comprising:impregnating the resin material with a radiosensitizer,the resin material containing thermoplastic resin, andthe radiosensitizer containing a solvent and a radiosensitizing molecule that contains, as a heavy element, an element with an atomic number equal to or greater than that of fluorine, and{'sub': 1', 'a1', '01', '01', 'a1, 'a relative energy difference (RED) represented by R/Rbeing 1.8 or less in a case where Ris an interaction radius of the thermoplastic resin in a Hansen space and Ris a distance between Hansen solubility parameters of the thermoplastic resin and the solvent.'}2. The method of claim 1 , wherein{'sub': '1', 'the relative energy difference (RED) between the thermoplastic resin and the solvent is 0.4 or less.'}3. The method of claim 1 , wherein{'sub': 2', 'a2', '02', '02', 'a2, 'a relative energy difference (RED) represented by R/Ris 1.0 or less in a case where Ris an interaction radius of the radiosensitizing molecule in the Hansen space and Ris a distance between the Hansen solubility parameters of the radiosensitizing molecule and the solvent.'}4. The method of claim 1 , whereinthe resin material is impregnated with the radiosensitizer set to a temperature equal to or higher than a glass transition point of the resin material.5. The method of claim 1 , whereinthe heavy element ...

X-RAY APPARATUS

An equipment mount for an x-ray apparatus is disclosed. The mount includes a main shield element, a peripheral shield element and a secondary shield element arranged to permit a mounting element to pass through the main shield element in a shielded manner. A support apparatus for an x-ray apparatus is also disclosed. The support apparatus comprises a separable bearing for translating a support part between a first position and a second position and an elevator mechanism for translating the support part from the second position to a third position, thereby separating the bearing. 1. An equipment mount for an x-ray apparatus , the mount comprising:a main shield element having at least one aperture penetrating the shield element from one side of the shield element to the other side of the shield element;a mounting element arranged to extend through the aperture of the main shield element and having an equipment-supporting surface on the one side of the aperture and having a base surface on the other side of the aperture;a peripheral shield element extending from a region of the main shield element surrounding the aperture to at least partly surround at least part of the mounting element; anda secondary shield element arranged at one of the base surface and the equipment-supporting surface of the mounting element and extending towards the main shield element to at least partly surround an outer periphery of at least part of the peripheral shield element.2. The equipment mount according to claim 1 , wherein the aperture defines an axis normal thereto claim 1 , and the main shield element claim 1 , the peripheral shield element and the secondary shield element are together configured and arranged such that x-ray radiation incident at an angle greater than 45 degrees from at least one direction about the axis will impinge on at least one of the plate shield element claim 1 , secondary shield element and peripheral shield element claim 1 , preferably 30 degrees claim 1 , ...

X-RAY APPARATUS

An equipment mount for an x-ray apparatus is disclosed. The mount includes a main shield element, a peripheral shield element and a secondary shield element arranged to permit a mounting element to pass through the main shield element in a shielded manner. A support apparatus for an x-ray apparatus is also disclosed. The support apparatus comprises a separable bearing for translating a support part between a first position and a second position and an elevator mechanism for translating the support part from the second position to a third position, thereby separating the bearing. 1. A manipulator stage for an x-ray apparatus , the stage comprising:a sample stage for holding a sample undergoing x-ray exposure;a first support structure arranged to support the sample stage at a first position on the first support structure;a second support structure arranged to support the first support structure at a second position on the first support structure displaced in a horizontal direction from the first position and configured such that that the first support structure may be translated in a vertical direction while remaining supported by the second support structure; anda third support structure arranged to support the first support structure at a third position on the first support structure displaced in a horizontal direction from the first position such that the first position is between the second position and the third position in a horizontal direction,wherein the third support structure comprises a drive mechanism for translating the first support structure in a vertical direction.2. The manipulator stage according to claim 1 , further comprising a reference member to which the second and third support structures are provided and relative to which the first support structure is able to be translated by the drive mechanism.3. The manipulator stage according to claim 1 , wherein the sample stage comprises a rotational stage for adjusting the position of the sample ...

System and method for phase-contrast x-ray imaging

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

Object information acquisition method and object information acquisition apparatus

Provided is a method for acquiring information relating to a composition of a detected object from results of a measurement, using radiation, this method including: a step for acquiring by a computer a result of measuring the detected object using radiation; a step for estimating by a computer a chemical composition ratio of the detected object, using an equation that contains a value derived from the measurement result as a constant and contains a value derived from the chemical composition ratio of the detected object as a variable, and then solving the equation; and a step for outputting the estimated chemical composition ratio or a physical property value acquired based on the estimated chemical composition ratio as information relating to the composition of the detected object.

SYSTEMS AND METHODS OF COMPARATIVE COMPUTED TOMOGRAPHY (CT) FOR QUALIFICATION OF COMMERCIAL GRADE ITEMS

A method of qualifying physical components using computed tomography (CT) includes obtaining qualified CT data from a CT scanner for at least one qualified physical component. Qualification data is generated based on the qualified CT data, where the qualification data defines a qualification envelope. Candidate CT data is obtained from the CT scanner for a candidate physical component. Comparison data is then generated based on the candidate CT data and the qualification data, where the comparison data indicates whether the candidate CT data is within the qualification envelope defined by the qualification data. An acceptance signal is generated if the comparison data meets acceptance criteria. 1. A method of qualifying physical components using computed tomography (CT) , the method comprising the steps of:obtaining, via a processor, qualified CT data from a CT scanner for at least one qualified physical component;generating, via the processor, qualification data based on the qualified CT data, where the qualification data defines a qualification envelope;obtaining, via the processor, candidate CT data from the CT scanner for a candidate physical component;generating, via the processor, comparison data based on the candidate CT data and the qualification data, where the comparison data indicates whether the candidate CT data is within the qualification envelope defined by the qualification data; andgenerating, via the processor, an acceptance signal if the comparison data meets acceptance criteria.2. The method of claim 1 , where the acceptance criteria requires that the entirety of the candidate CT data is within the qualification envelope defined by the qualification data.3. The method of claim 1 , where:the qualified CT data comprises a plurality of volumetric pixels (voxels);the qualification data comprises a plurality of voxels;candidate CT data comprises a plurality of voxels; andthe comparison data comprises a plurality of voxels.4. The method of claim 3 , ...

Dimensional x-ray computed tomography system and ct reconstruction method using same

A dimensional X-ray computed tomography system configured to obtain projection images by irradiating an object to be measured disposed between an X-ray source and an X-ray detector with X-rays for CT scan, and generate a three-dimensional image of the object to be measured by performing CT reconstruction on the projection images, includes a fixed table on which the object to be measured is placed, and a movable X-ray source and a movable X-ray detector that are capable of moving around the fixed table with the fixed table therebetween.

STRUCTURED DETECTORS AND DETECTOR SYSTEMS FOR RADIATION IMAGING

A radiation detector module including a scintillator element configured to generate optical signals in response to incident radiation. A photodetector is coupled to at least a first surface of the scintillator element, the photodetector configured to convert the optical signals into output characterizing the radiation. An acoustic array is coupled to at least a second surface of the scintillator element, the acoustic array configured to convert acoustic signals generated in the scintillator element into output characterizing acoustic energy deposited therein. 1. A radiation detector module comprising:a detector element configured to generate optical and/or electronic signals in response to incident radiation;a readout coupled to at least a first surface of the detector element, the readout configured to convert the optical and/or electronic signals into output characterizing the radiation; andan acoustic array or acoustic sensor element coupled to at least a second surface of the detector element, the acoustic array or sensor element configured to convert acoustic signals generated in the detector element into output characterizing acoustic energy deposited therein.2. The detector module of claim 1 , wherein the radiation is incident face-on to the detector element claim 1 , along a major surface thereof.3. The detector module of claim 1 , wherein the radiation is incident edge-on to the detector element claim 1 , along an edge defined transverse to first and second major opposing surfaces thereof.4. The detector module of claim 1 , wherein the readout and the acoustic array or element are disposed on opposing surfaces of the detector element.5. The detector module of claim 1 , wherein the readout and the acoustic array or element are disposed on a same surface or side of the detector element.6. The detector module of claim 1 , wherein the readout and the acoustic array or element are disposed on non-parallel surfaces of the detector element.7. The detector module ...

NORMALIZATION OF A POSITRON EMISSION TOMOGRAPHY SCANNER

A method for normalization of a positron emission tomography (PET) scanner. The PET scanner includes a plurality of blocks. Each of the plurality of blocks includes a plurality of rows. Each of the plurality of rows includes a plurality of actual detectors and an unused area. The method includes acquiring a plurality of lines of response (LORs) by scanning a normalization phantom, obtaining a plurality of actual counts by extracting a plurality of LORs subsets from the plurality of LORs and counting a number of elements in each LORs subset, generating a plurality of virtual detectors in each of the plurality of rows by assigning the unused area to the plurality of virtual detectors, generating a count profile for the plurality of actual detectors, estimating a plurality of virtual counts based on the count profile, and applying a normalization process on the plurality of blocks. 1. A method for normalization of a positron emission tomography (PET) scanner comprising a plurality of blocks , each of the plurality of blocks comprising a plurality of rows , each of the plurality of rows comprising a plurality of actual detectors and an unused area comprising a respective region in each of the plurality of rows , the respective region excluding the plurality of actual detectors , the method comprising:acquiring a plurality of lines of response (LORs) by scanning a normalization phantom utilizing the PET scanner, each respective LOR of the plurality of LORs associated with an actual detector of the plurality of actual detectors; extracting a plurality of LORs subsets from the plurality of LORs, each of the plurality of LORs subsets associated with a respective actual detector of the plurality of actual detectors; and', 'counting a number of elements in each LORs subset of the plurality of LORs sub sets;, 'obtaining, utilizing one or more processors, a plurality of actual counts bygenerating, utilizing the one or more processors, a plurality of virtual detectors in each of ...

INSPECTION DEVICES AND INSPECTION METHODS

Inspection devices and inspection methods are disclosed. The inspection method includes: performing X-ray scanning on an object being inspected so as to generate an image of the object being inspected; dividing the image of the object being inspected to determine at least one region of interest; detecting interaction between a cosmic ray and the region of interest to obtain a detection value; calculating a scattering characteristic value and/or an absorption characteristic value of the cosmic ray in the region of interest based on size information of the region of interest and the detection value; and discriminating a material attribute of the region of interest by means of the scattering characteristic value and/or the absorption characteristic value. With the above technical solutions, inspection accuracy and inspection efficiency may be improved. 1. An inspection method comprising:performing X-ray scanning on an object being inspected to generate an image of the object being inspected;dividing the image of the object being inspected to determine at least one region of interest;detecting interaction between a cosmic ray and the region of interest to obtain a detection value;calculating a scattering characteristic value and/or an absorption characteristic value of the cosmic ray in the region of interest based on size information of the region of interest and the detection value; anddiscriminating a material attribute of the region of interest by means of the scattering characteristic value and/or the absorption characteristic value.2. The inspection method according to claim 1 , wherein the image of the object being inspected includes at least one of following images:a single-energy transmission image, an attenuation coefficient image, a CT value image, an electron density image, and an atomic number image.3. The inspection method according to claim 1 , wherein the material attribute of one region of interest is discriminated by means of the scattering ...

METHOD FOR PRODUCING SILVER NANOWIRES, SILVER NANOWIRES, AND INK USING SAME

A method for producing silver nanowires, containing reduction-precipitating silver in the form of wire in an alcohol solvent having dissolved therein a silver compound, the deposition being performed in the alcohol solvent having dissolved therein a chloride, a bromide, an alkali metal hydroxide, an aluminum salt, and an organic protective agent, the molar ratio Al/OH of the total Al amount of the aluminum salt dissolved in the solvent and the total hydroxide ion amount of the alkali metal hydroxide dissolved therein being from 0.01 to 0.40, the molar ratio OH/Ag of the total hydroxide ion amount of the alkali metal hydroxide dissolved in the solvent and the total Ag amount of the silver compound dissolved therein being from 0.005 to 0.50. 114-. (canceled)15. Silver nanowires having an average diameter of 50 nm or less and an average length of 10 μm or more having coated thereon a copolymer of vinylpyrrolidone and an another monomer.16. Silver nanowires having an average diameter of 50 nm or less and an average length of 10 μm or more and having coated thereon a cationic organic protective agent.17. Silver nanowires having an average diameter of 50 nm or less and an average length of 10 μm or more having coated thereon a copolymer of vinylpyrrolidone and an additional cationic monomer.18. Silver nanowires having an average diameter of 50 nm or less and an average length of 10 μm or more having coated thereon a copolymer of vinylpyrrolidone and a diallyldimethylammonium salt monomer.19. The silver nanowires according to claim 15 , wherein assuming that a ratio of the average length (nm) and the average diameter (nm) is referred to as an average aspect ratio claim 15 , the average aspect ratio is 250 or more.20. The silver nanowires according to claim 15 , comprising Al in an amount of from 100 to 1 claim 15 ,000 ppm in the metal components.21. A silver nanowires ink comprising the silver nanowires according to in a liquid medium in a content of from 0.05 to 5.0% by ...

SYSTEM AND METHOD FOR COMPUTED TOMOGRAPHY

The present disclosure provides a system and method for CT image reconstruction. The method may include combining an analytic image reconstruction technique with an iterative reconstruction algorithm of CT images. The image reconstruction may be performed on or near a region of interest. 1. A method implemented on a computing device having at least one processor and at least one computer-readable storage medium , the method comprising:receiving a first set of raw data relating to a subject generated by an imaging device;determining a first ROI in a field of view (FOV) of the imaging device;determining a second ROI including the first ROI;reconstructing the first set of raw data to obtain a first image on the second ROI;obtaining a second image by zero padding the first ROI of the first image;performing forward projection on the first image to obtain a first sinogram;performing forward projection on the second image to obtain a second sinogram;applying a first filter on the first sinogram to obtain a third sinogram;subtracting the second sinogram from the third sinogram to obtain a fourth sinogram;applying a second filter on the first set of raw data to obtain a fifth sinogram; andperforming, based on the fourth sinogram and the fifth sinogram, iterative reconstruction to generate a third image.2. The method of claim 1 , wherein the first set of raw data comprises sinogram data.3. The method of claim 1 , wherein the reconstructing the first set of raw data comprises applying filtered back projection (FBP) on the first set of raw data.4. The method of claim 1 , wherein the first ROI is rectangular claim 1 , and the first ROI has a first width and a first height.5. The method of claim 4 , wherein the second ROI is rectangular claim 4 , and the second ROI has a second width and a second height.6. The method of claim 5 , wherein the ratio of the first width to the first height is the same as the second width to the second height.7. The method of claim 1 , wherein the ...

Imaging, Data Acquisition, Data Transmission, and Data Distribution Methods and Systems for High Data Rate Tomographic X-Ray Scanners

The present invention is an X-ray system having a source-detector module, which includes X-ray sources and detectors, for scanning an object being inspected, a scan engine coupled to the source-detector module for collecting scan data from the source detector module, an image reconstruction engine coupled to the scan engine for converting the collected scan data into one or more X-ray images, and a scan controller coupled with at least one of the source detector module, the scan engine, and the image reconstruction engine optimize operations of the X-ray system. 1. An image transmission system for generating at least one three-dimensional image , comprising:a plurality of X-ray systems for inspecting one or more objects, wherein each of said plurality of X-ray systems generates X-rays;a plurality of scan engines, each scan engine being coupled with at least one of said plurality of X-ray systems for generating one or more two dimensional images of said one or more objects, each of the two dimensional images being projections of the at least one three dimensional image;at least one network scheduler coupled to each of said plurality of scan engines via a network link for rendering the one or more two dimensional images to one or more operators for manual inspection, wherein the at least one network scheduler renders the at least one three dimensional image, corresponding to the one or more two dimensional images, to the one or more operators for inspection upon receiving a request for the at least one three dimensional image; andat least one storage array coupled with each of the plurality of X-ray systems via a high speed dedicated network link for storing one or more of the three dimensional images and the two dimensional images.2. The image transmission system of further comprising a plurality of scan controllers claim 1 , each scan controller coupled with at least one of said plurality of X-ray systems for optimizing at least one of said plurality of scan engines ...

PRECISION AND RESOLUTION OF QUANTITATIVE IMAGING BY COMBINING SPECTRAL AND NON-SPECTRAL MATERIAL DECOMPOSITION

The invention proposes to combine spectral image data with non-spectral image data in order to overcome limitations of the different data taking methods. Results from the methods are preferably combined as functions of spatial frequency so that spectral image data provide high accuracy at low frequencies, whereas the non-spectral image data helps reducing the noise at high frequencies. The invention enables a range of applications in different fields of X-ray imaging such as improved tissue contrast and tissue characterization. 1. A calculation unit for processing quantitative image data ,wherein the calculation unit comprises,a receiving unit; anda processing unit,wherein the receiving unit is configured for receiving spectral image data of an object of interest;wherein the receiving unit is configured for receiving non-spectral image data of the object of interest,wherein the processing unit is configured for calculating material properties as a function of position from the spectral image data;wherein the processing unit is configured for calculating material properties as a function of position from the non-spectral image data;wherein the processing unit is configured for combining the material properties calculated from the spectral and from the non-spectral image data as a function of spatial frequency by weighting the spectral and the non-spectral image data depending on the spatial frequencies in the image.2. The calculation unit according to claim 1 ,wherein the processing unit is configured to give stronger weight to the low-spatial-frequency parts of the spectral image data as compared to the low-spatial-frequency parts of the non-spectral image data; andwherein the processing unit is configured to give stronger weight to the high-spatial-frequency parts of the non-spectral image data as compared to the high-spatial-frequency parts of the spectral image data.3. The X-ray imaging system claim 1 , comprising{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, ...

Creation of electron density datasets from spectral ct datasets

A method for converting spectral CT datasets into electron density datasets with applications in the fields of medical image formation or radiation treatment planning. The method comprises a preparation method that fits free parameters of a generalized electron density prediction model based on obtained electron density values such as data on tissue substitutes, and a conversion method using the fitted parameter prediction model and spectrally decomposed CT data as first and second inputs, respectively. The method is particularly useful in dual-energy CT and more specifically in dual layer detector CT systems.

TOMOGRAPHIC IMAGE-CAPTURING TECHNIQUE

A tomographic image-capturing technique is described. According to one device aspect () of the technique, a radiation source () is embodied to emit a beam. The radiation source () has a first transverse dimension () across the beam and a second transverse dimension () substantially perpendicular to the first transverse dimension (). The second transverse dimension () is larger than the first transverse dimension (). A detector () is embodied to capture the beam. A sample holder () arranged between radiation source () and detector () is embodied to rotate a sample in the beam about a first axis () and about a second axis () which differs from the first axis (). 1100. Device () for tomographic image capturing , comprising:{'b': 102', '102', '108', '110', '108', '110', '108, 'a radiation source (), which is embodied to emit a beam, wherein the radiation source () has a first transverse dimension () across the beam and a second transverse dimension () substantially perpendicular to the first transverse dimension (), wherein the second transverse dimension () is greater than the first transverse dimension ();'}{'b': '106', 'a detector (), which is embodied to detect the beam; and'}{'b': 104', '102', '106', '112', '114', '112, 'a sample holder () arranged between radiation source () and detector () which is embodied to rotate a sample in the beam about a first axis () and about a second axis () which differs from the first axis ().'}2110108. Device according to claim 1 , wherein the second transverse dimension () is more than twice as great as the first transverse dimension ().3112114. Device according to or claim 1 , wherein the first axis () is substantially perpendicular to the second axis () and/or substantially parallel to the beam.4110. Device according to any one of to claim 1 , wherein the second axis () is substantially perpendicular to the beam.5104112114. Device according to any one of to claim 1 , further comprising a controller claim 1 , which is embodied to ...

NON-DESTRUCTIVE ASSESSMENT OF CORN ROOTWORM DAMAGE

The present embodiments generally relate to methods of non-destructively imaging plant root damage by insect root herbivores and evaluating the efficacy of insecticidal materials associated with the roots of plants against the insect root herbivores, useful for automated high throughput bioassays. 1. A method of non-destructively determining the resistance of candidate plant roots to insect herbivory , comprising subjecting root tissue of the candidate plant comprising at least one insecticidal material associated with said root tissue to at least one insect root herbivore , obtaining a non-destructive image of roots of said candidate plant , wherein the candidate plant roots are substantially embedded in the soil , and determining the resistance of the candidate plant roots to insect herbivory based on injury to the root tissue.2. The method of claim 1 , comprising obtaining the non-destructive image using X-ray computed tomography.3. The method of claim 1 , comprising obtaining the root images of at least two candidate plants simultaneously or sequentially.4. The method of claim 1 , wherein the injury to the root tissue results in a determination of a root nodal injury score.5. The method of claim 1 , comprising determining the injury to the root tissue by measuring root volume claim 1 , root length claim 1 , root growth rate claim 1 , root branching morphology claim 1 , or root depth distribution.6. The method of claim 1 , comprising generating the root nodal injury score by a processor claim 1 , wherein said processor receives a digital image and generates a root nodal injury score.7Diabrotica. The method of claim 1 , wherein the insect root herbivore is a species.8DiabroticaDiabrotica virgifera, Diabrotica undecimpunctata howardiDiabrotica barberi.. The method of claim 7 , wherein said species is selected from the group consisting of claim 7 , and9. The method of claim 1 , wherein the insecticidal material is selected from the group consisting of an ...

TOLERANCE ERROR ESTIMATING APPARATUS, METHOD, PROGRAM, RECONSTRUCTION APPARATUS AND CONTROL APPARATUS

A tolerance error estimating apparatus, method, program, reconstruction apparatus and control apparatus capable of estimating a deviation of a drive axis from a reference position with respect to driving time are provided. A tolerance error estimating apparatus (processing apparatus ) X-ray analysis apparatus comprises a specific position calculating section for obtaining a specific position of a reference sample at each rotation driving time from X-ray detection images and a deviation amount calculating section for calculating the deviation amount Δx in the x direction and Δy in the y direction of the center position of a rotation drive shaft as the rotation drive axis at each rotation driving time from the reference position based on the specific position, when the z direction of the orthogonal coordinate system fixed to the sample is set the direction parallel to the rotation drive axis. 1. A tolerance error estimating apparatus for estimating a tolerance error of a rotation drive axis of an X-ray analysis apparatus , comprising:a specific position calculating section for obtaining a specific position of a reference sample at each rotation driving time from X-ray detection images, anda deviation amount calculating section for calculating the deviation amount Δx in the x direction and Δy in the y direction of the center position of a rotation drive shaft as the rotation drive axis at each rotation driving time from the reference position based on the specific position, when z direction of an orthogonal coordinate system fixed to a sample is set the direction parallel to the rotation drive axis.2. The tolerance error estimating apparatus according to claim 1 ,wherein the amount calculating section assumes respective functional forms of Δx and Δy for each rotation driving time, determines the function Δx(t) used for the calculation of Δx and the function Δy(t) used for the calculation of Δy by optimizing parameters of the assumed functional forms, and uses the ...