Abstract: A mammography system using a tissue exposure control relying on estimates of the thickness of the compressed and immobilized breast and of breast density to automatically derive one or more technic factors. The system further uses a tomosynthesis arrangement that maintains the focus of an anti-scatter grid on the x-ray source and also maintains the field of view of the x-ray receptor. Finally, the system finds an outline that forms a reduced field of view that still encompasses the breast in the image, and uses for further processing, transmission or archival storage the data within said reduced field of view.

Abstract: A detector arrangement is disclosed for performing phase-contrast measurements, including at least two transducer layers arranged one behind the other, wherein at least the first transducer layer arranged in the radiation direction includes alternate sensitive areas having a high absorptance for the conversion of incident radiation quanta into signals and less sensitive areas having a lower absorptance in comparison thereto. Further, a corresponding X-ray tomography device and a method for performing phase-contrast measurements are also enclosed.

Abstract: Disclosed is a tomosynthesis system in which the maintenance is easily performed. The tomosynthesis system of the present disclosure includes a vacuum chamber, a plurality of X-ray sources configured to be coupled to the vacuum chamber so as to protrude from the vacuum chamber to generate X-rays in a direction of a subject, and an image sensor configured to detect an X-ray projection image that passes through the subject.

Abstract: Tomosynthesis data may be acquired from an ionizing radiation source that substantially continuously emits radiation while its position is varied relative to a photon counting detector. The detector detects photons comprised within the radiation and photon data indicative of the detected photons is generated. The photon data may comprise data related to a detected photon's detection time, detection location on the detector, energy level, and/or trajectory from the radiation source, for example. The photon data of various photons may be compiled into a plurality of bins and, through reconstruction and tomosynthesis techniques, produce synthesized images of various tomography planes of an object under examination. In this way, the tomosynthesis techniques rely on counting photons rather than measuring their energy to create synthesized images.

Abstract: A multiradiation generation apparatus according to the present invention includes a plurality of radiation sources arranged in a row. Each of the radiation sources includes an electron source configured to emit electrons and a target unit configured to generate radiation upon receiving electrons emitted from the electron source. At least one of the radiation sources is a dual-purpose radiation source used for both tomosynthesis imaging and non-tomosynthesis imaging, and the other radiation sources are single-purpose radiation sources used only for tomosynthesis imaging.

Abstract: One object of this invention is to provide radiography apparatus with suppressed exposure to a subject in tomography mode. An FPD provided in X-ray apparatus according to this invention converts X-rays into electric signals, and thereafter amplifies the signals to output them to an image generation section. According to this invention, an amplification factor is higher in a tomography mode than in a spot radiography mode. A tomographic image is obtained through superimposing two or more fluoroscopic image. In comparison of the fluoroscopic images, they differ from one another in appearance of the false image. Accordingly, superimposing the images may achieve cancel of the false images. In this way, the tomographic image finally obtained has no false image.

Abstract: A tetrahedron beam computed tomography system including an x ray source array that sequentially emits a plurality of x ray beams at different positions along a scanning direction and a collimator that intercepts the plurality of x-ray beams so that a plurality of fan-shaped x-ray beams emanate from the collimator towards an object. The system includes a first detector receiving a first set of fan-shaped x ray beams after they pass through the object, the first detector generating a first imaging signal for each of the received first set of fan-shaped x-ray beams and a second detector receiving a second set of fan-shaped x ray beams after they pass through the object, the second detector generating a second imaging signal for each of the received second set of fan-shaped x-ray beams. Each detector and source pair form a tetrahedral volume. In other embodiments, the system may also have more than two detectors arrays and/or more than one source array.

Abstract: A technique for directly reconstructing three-dimensional images acquired in tomosynthesis imaging is provided. The method allows for pre-processing a set of projection images based upon the acquisition geometry prior to direct reconstruction of the projection images. Furthermore, the technique allows for post-processing the reconstructed image data as desired to improve image quality. If desired the direct reconstruction process may be iterated a set number of times or until a desired threshold criteria is met, such as regarding image quality.

Abstract: In a tomosynthesis system a static focal spot is moved in a direction opposite to and generally synchronized with the directional movement of an x-ray source and X-ray collimator blades are moved during each exposure in synchronization with the shifting of the static focal spot. The synchronized movement of the static focal spot, x-ray tube and collimator blades helps keep the effective focal spot fixed in space relative to the breast, detector or both during the entire duration of the exposure and keeps the x-ray field on the detector and breast static. The shifting collimator blades follow an oscillating pattern over the multiple x-ray exposures of a tomosynthesis scan.

Abstract: When a subject is irradiated with radiation, and the radiation that has passed through the subject is detected, body thickness information about the subject is obtained. Further, a slice image obtainment condition representing a range in which a slice image is obtained in the subject is set based on the body thickness information. Further, the slice image is obtained based on the slice image obtainment condition.

Abstract: A system and method for acquiring x-ray imaging data from a subject is disclosed. The x-ray imaging system includes a first support structure oriented in a vertical fashion and a second support structure oriented in a vertical fashion and spaced apart from the first support structure to define a scanning area configured to receive a subject to be scanned. A linear x-ray source is affixed to the first support structure on one side of the scanning area and is oriented in a vertical fashion, with the linear x-ray source configured to emit x-rays towards the subject. A linear detector arrangement is affixed to the second support structure on another side of the scanning area and is generally opposite the linear x-ray source. The linear detector arrangement is configured to receive x-rays after passing through the subject.

Abstract: An imaging method, more particularly a mammography method, includes rotating a tissue region in the virtual domain. Projection recordings of a tissue region are generated by way of radiation emitted by an emitter, which radiation is captured by a detector after passing through the tissue region. Slice images are generated from the projection recordings. A slice image region corresponding to a partial tissue region is rotated virtually. The virtually rotating partial tissue region can be displayed as a set of virtual projections.

Abstract: In an imaging method and a tomosynthesis apparatus, a two-dimensional low-energy image of the predetermined volume segment is obtained after administration of a contrast agent, followed by a two-dimensional high-energy image and then a high-energy tomosynthesis of the predetermined volume segment is obtained with a high total radiation dose that is significantly higher than the low radiation dose. The two-dimensional low-energy image is subtracted from the two-dimensional high-energy image to generate a result with which the concentration of the contrast agent is visible. Additionally, in a time interval in which an enrichment or a washing-out of the contrast agent occurs within the predetermined volume segment, a tomosynthesis of the predetermined volume segment is automatically implemented to show the concentration of the contrast agent in the predetermined volume segment.

Abstract: Tomosynthesis data may be acquired from an ionizing radiation source that substantially continuously emits radiation while its position is varied relative to a photon counting detector. The detector detects photons comprised within the radiation and photon data indicative of the detected photons is generated. The photon data may comprise data related to a detected photon's detection time, detection location on the detector, energy level, and/or trajectory from the radiation source, for example. The photon data of various photons may be compiled into a plurality of bins and, through reconstruction and tomosynthesis techniques, produce synthesized images of various tomography planes of an object under examination. In this way, the tomosynthesis techniques rely on counting photons rather than measuring their energy to create synthesized images.

Abstract: A radiation source and a detection means are moved relative to each other, thereby moving the radiation source to a plurality of positions. A subject is irradiated with radiation from the plurality of positions to obtain a plurality of radiographic images of the subject. A slice image of the subject is reconstructed from the plurality of radiographic images. At this time, a first mode for moving only the radiation source or a second mode for moving both of the radiation source and the detection means is selected based on the condition of radiography, and the plurality of radiographic images are obtained in the selected mode.

Abstract: A method to show a predetermined volume segment of an examination subject by means of a tomosynthesis apparatus, and a correspondingly designed tomosynthesis apparatus, operate as follows. A radioscopy test is implemented in which x-rays with a defined radiation dose are generated by an x-ray source, the x-rays traversing the predetermined volume segment and strike a detector, and an intensity of the x-rays striking the detector is determined. A first radiation dose of x-rays is calculated to create a two-dimensional exposure depending on the determined radiation dose and the intensity. A second radiation doses of x-rays is calculated to implement a tomosynthesis depending on the determined radiation dose and the intensity. A tomosynthesis of the predetermined volume segment is implemented with x-rays that traverse the predetermined volume segment and strike the detector, the x-rays being generated by an x-ray source with the second radiation doses.

Abstract: One object of this invention is to provide a radiation tomography apparatus for acquiring a tomographic image from a plurality of fluoroscopic images. The radiation tomography apparatus can acquire the tomographic image having superior visibility without being influenced by a shadow of a collimator appearing in the fluoroscopic image when radiation is applied only to a portion of an FPD through control a the collimator. In this invention, a boundary between a shadow area where the shadow of the collimator appears in the fluoroscopic image and a non-shadow area is identified, and the shadow area in the fluoroscopic image is complemented by the non-shadow area, etc., whereby a complement image is generated. Then the complement image is used for generating the tomographic image. According to this invention, an extremely dark area where the shadow of the collimator appears is removed and thereafter the tomographic image is generated.

Abstract: Tomosynthesis data may be acquired from a radiation source that substantially continuously emits radiation while its position is varied relative to a photon counting x-ray detector. The detector detects photons comprised within the radiation and photon data indicative of the detected photons is generated. The photon data may comprise data related to a detected photon's detection time, detection location on the detector, energy level, and/or trajectory from the radiation source, for example. The photon data of various photons may be compiled into a plurality of bins and, through reconstruction and tomosynthesis techniques, produce synthesized images of various tomography planes of an object under examination. In this way, the tomosynthesis techniques rely on counting photons rather than measuring their energy to create synthesized images.

Abstract: Provided is a radiation tomography apparatus that performs radiography for a series of fluoroscopic images while moving a radiation source and a radiation detecting device synchronously in opposite directions to each other and obtains a tomographic image of a subject based on the fluoroscopic images. The radiation tomography apparatus allows to preview the tomographic image obtained through the radiography immediately after completion of the radiography. A preview image for previewing a sectional image of a subject is generated besides a tomographic image for diagnosis. The preview image can be obtained through simpler computing processing. Consequently, an operator sees once the preview image displayed on a display unit prior to the tomographic image for diagnosis, thereby determining to conduct radiography again quickly.

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

Abstract: A shadow area in a lung-field area of a subject is detected from tomographic images constituting a three-dimensional image representing the subject. A hilum-of-lung area in the lung-field area of the subject is detected from the tomographic images. Further, a slice image that passes through a first point that is a predetermined point in the detected shadow area, a second point that is a predetermined point in the detected hilum-of-lung area, and an arbitrary point that has been set in advance is generated. The generated slice image is displayed.

Abstract: In a method and device for generating a tomosynthetic 3D x-ray image, a number of digital x-ray images of an examination subject are acquired at respectively different projection angles, within a limited angle range, using an x-ray source and a digital x-ray detector. At an initial position for a selected projection angle, a spatially-fixed reference point is projected onto a partial region of the acquisition surface of the x-ray detector. For each further projection angle, a corresponding partial region on the acquisition surface is automatically determined. The tomosynthetic 3D image is reconstruction exclusively using image data from the respective partial regions.

Abstract: The position of the sample is measured and used to correct for any off-axis motion during tomography using x-ray projection microscope system with a rotation stage system. The position is sensed using a precision-machined, low-CTE gold-coated cylinder or disc and three to five capacitive distance sensors. The correction can then be performed purely as image processing in software, by applying an appropriate shift in X and Y of the captured x-ray projections. A calibration is often necessary for each system (gold disc plus sensors plus sample stage) to account for any machining errors of the gold disc or positioning errors of the capacitive sensors. This calibration should also be repeated whenever any maintenance is performed on the metrology setup.

Abstract: A distributed X-ray source (3) and an imaging system (1) comprising such an X-ray source (3) are proposed. The X-ray source (3) comprises an electron beam source arrangement (19) and an anode arrangement (17). The electron beam source arrangement (19) is adapted to emit electron beams (24) towards at least two locally distinct focal spots (27) on the anode arrangement (17). Therein, the X-ray source is adapted for displacing the anode arrangement (17) with respect to the electron beam source arrangement (19). While the provision of a plurality of focal spots allows acquisition of projection images under different projection angles thereby allowing reconstruction of three-dimensional X-ray images e.g. in tomosynthesis application, a displacement motion of the anode arrangement (17) with respect to the electron beam source arrangement (19) may allow for distributed heat flux to the anode arrangement thereby possibly reducing cooling requirements.

Abstract: A radiation imaging device includes plural individual detectors defining an irregular rectangular active area responsive to x-rays and with different widths along a length of the active area. The individual detectors may be of different rectangular shapes and mounted on a motherboard. The motherboard may be formed of a first module mounting a first of two individual detectors and a second module detachable connected to the first module and mounting a second of two individual detectors.

Abstract: The present invention generally refers to computed tomography (CT) based imaging systems and, more particularly, to a fast 3D tomosynthesis scanner apparatus and CT-based method without focal spot motion during continuous tube movement around an object of interest (O) or tissue region (M) to be examined (herein also referred to as “object”), which may advantageously be used in cone-beam volume CT mammography imaging so as to avoid motion artifacts and blurring effects.

Abstract: An apparatus for performing tomosynthesis and mammography of a breast of a patient, comprises: an X-ray detector device, designed to receive and detect X-rays in a first, detection plane; a plurality of X-ray sources, stably positioned in a second plane which is substantially at a right angle to the first, detection plane in a plurality of predetermined positions relative to the detector device, each of the sources being individually activatable for emitting a corresponding X-ray beam towards the first, detection plane; a region for positioning the breast; a processing and control unit, connected to the X-ray sources for activating them individually and connected to the detector device for receiving a signal relating to the X-rays which passed through the breast and were detected by the detector device, the unit being designed to derive from the signal at least one radiographic image representative of the internal structure of the patient's breast.

Abstract: Some aspects include acquisition of a first plurality of projection images of a volume using a megavoltage x-ray source, each of the first plurality of projection images associated with a respective one of a first plurality of locations of the megavoltage x-ray source, acquisition of a second plurality of projection images of the volume using a kilovoltage x-ray source, each of the second plurality of projection images associated with a respective one of a second plurality of locations of the kilovoltage x-ray source, and performance of digital tomosynthesis reconstruction to generate a three-dimensional image of the volume based on the first plurality of projection images and the second plurality of projection images. The first axis may be perpendicular to the second axis.

Abstract: An X-ray inspection apparatus includes a scanning X-ray source for emitting an X-ray, an X-ray detector drive unit having a plurality of X-ray detectors mounted thereon and being capable of independently driving the plurality of X-ray detectors, and an image acquisition control mechanism for controlling the X-ray detector drive unit and acquisition of image data from the X-ray detectors. The scanning X-ray source emits an X-ray by moving an X-ray focal point position of the X-ray source to each of originating point positions of X-ray emission, which are set for the X-ray detectors such that X-rays are transmitted through a plurality of prescribed inspection areas of an inspection object and enter the X-ray detectors. Image pickup by the X-ray detector and movement of another X-ray detector are concurrently performed in an alternate manner. The image acquisition control mechanism acquires image data, and an operation unit reconstructs an image.

Abstract: The invention relates to an X-ray device comprising an x-ray sensitive camera for creating tomograms, especially panoramic tomograms. Means for creating 3D shots of a partial volume of the mandibular arch are also provided, said 3D shots being created especially by a second image receiver for creating a 2D shot and means for taking a plurality of 2D shots from different directions and creating a 3D shot therefrom, preferably according to conebeam technology with the associated reconstruction algorithms. The x-ray sensitive camera comprises a first x-ray sensitive image receiver for creating a tomogram, and a second x-ray sensitive image receiver for creating plane shots.

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

Abstract: A method for imaging a series of medical images by tomosynthesis with blur reduction with an imaging system comprising a radiation source configured to emit a total radiation dose, a detector, and a control unit configured to control the source is provided. The method comprises positioning, with the control unit, the source in at least two positions relative to the detector. The method also comprises emitting an individual radiation dose at least partially detected by the detector in each of the at least two positions. The method further comprises distributing, with the control unit, the total radiation dose among the individual radiation doses such that the strongest individual radiation doses are emitted by the source in positions corresponding to the beginning of an imaging session of the series of medical images.

Abstract: In an imaging method and a tomosynthesis apparatus, a two-dimensional low-energy image of the predetermined volume segment is obtained after administration of a contrast agent, followed by a two-dimensional high-energy image and then a high-energy tomosynthesis of the predetermined volume segment is obtained with a high total radiation dose that is significantly higher than the low radiation dose. The two-dimensional low-energy image is subtracted from the two-dimensional high-energy image to generate a result with which the concentration of the contrast agent is visible. Additionally, in a time interval in which an enrichment or a washing-out of the contrast agent occurs within the predetermined volume segment, a tomosynthesis of the predetermined volume segment is automatically implemented to show the concentration of the contrast agent in the predetermined volume segment.

Abstract: A system and method for acquiring x-ray imaging data from a subject is disclosed. The x-ray imaging system includes a first support structure oriented in a vertical fashion and a second support structure oriented in a vertical fashion and spaced apart from the first support structure to define a scanning area configured to receive a subject to be scanned. A linear x-ray source is affixed to the first support structure on one side of the scanning area and is oriented in a vertical fashion, with the linear x-ray source configured to emit x-rays towards the subject. A linear detector arrangement is affixed to the second support structure on another side of the scanning area and is generally opposite the linear x-ray source. The linear detector arrangement is configured to receive x-rays after passing through the subject.

Abstract: Systems, methods and apparatus are provided through which in some embodiments a time series is generated from a plurality of X-ray projections of an object that were acquired under limited angular conditions with a flat-panel X-ray detector, and thereafter the plurality of X-ray projections in the time series are displayed in reference to a pivot point.

Abstract: A method to show a predetermined volume segment of an examination subject by means of a tomosynthesis apparatus, and a correspondingly designed tomosynthesis apparatus, operate as follows. A radioscopy test is implemented in which x-rays with a defined radiation dose are generated by an x-ray source, the x-rays traversing the predetermined volume segment and strike a detector, and an intensity of the x-rays striking the detector is determined. A first radiation dose of x-rays is calculated to create a two-dimensional exposure depending on the determined radiation dose and the intensity. A second radiation doses of x-rays is calculated to implement a tomosynthesis depending on the determined radiation dose and the intensity. A tomosynthesis of the predetermined volume segment is implemented with x-rays that traverse the predetermined volume segment and strike the detector, the x-rays being generated by an x-ray source with the second radiation doses.

Abstract: Systems, methods, and related computer program products for medical imaging and image-guided radiation treatment (IGRT) are described. In one preferred embodiment, an IGRT system provides intrafraction target tracking based on a comparison of intrafraction x-ray tomosynthesis image data with initial x-ray tomosynthesis image data acquired with the patient in an initial treatment position, the initial x-ray tomosynthesis image data having an inherent registration with co-acquired image data from a setup imaging system integral with, or having known geometry relative to, the tomosynthesis imaging system. Repeated registration of intrafraction x-ray tomosynthesis image data with pre-acquired reference image data from a different frame of reference is not required during intrafraction radiation delivery. Advantages include streamlined intrafraction computation and/or reduced treatment delivery margins.

Abstract: Imaging systems including a multiple focal spot x-ray source adapted to irradiate an object with a series of angularly displaced x-ray beams, one at a time, without substantial rotation or translation of the multiple focal spot x-ray source are provided. Such systems also includes a detector adapted to receive at least a fraction of the angularly displaced x-ray beams after being attenuated by the object to produce at least two x-ray projection images of the object. The imaging systems also include a processor adapted to shift and add the at least two x-ray projection images to bring at least two planes of the object into focus, one at a time.

Abstract: This invention has one object to provide radiation tomography apparatus that allows suppression of arithmetic load of detection data with a wider detector ring. In order to achieve this purpose, the radiation tomography apparatus according to this invention performs coincidence only when two scintillation counter crystals that detect gamma rays coincidentally (A) belong to the same ring unit, or (B) belong to each of the ring units adjacent to each other. Accordingly, a distance in the central axis direction between the radiation detecting elements is limited to be equal to or less than a thickness of the ring unit in the central axis direction. Accordingly, radiation tomography apparatus may be provided that allows generation of the sectional image suitable for diagnosis while arithmetic load is suppressed.

Abstract: An X-ray inspection apparatus includes an X-ray source, an X-ray detector, an X-ray detector drive unit, an image acquisition control mechanism for controlling driving of the X-ray detector by the X-ray detector drive unit and acquisition of image data from the X-ray detector, an inspection object drive mechanism for moving an inspection object, an X-ray source control mechanism, and an operation unit. The X-ray source control mechanism causes the X-ray source to output an X-ray based on an instruction from the operation unit. The image acquisition control mechanism moves the X-ray detector to a plurality of image pickup positions aligned in the Y direction based on an instruction from the operation unit. The inspection object drive mechanism moves the inspection object in the Y direction such that the X-ray detector can detect an X-ray transmitted through the inspection object at each image pickup position based on an instruction from the operation unit.

Abstract: In a method for the 3D viewing of tomosynthesis images in mammography, an algorithm is proposed for the viewing of radiology signs in series of 3D data. When the digital volume is being viewed by a practitioner, the disclosed algorithm is used to provide a dynamic indication of the position of the radiology signs on the 3D image by means of markers. The use of dynamic viewing draws the practitioner's attention to the zones of clinical interest. The disclosed algorithm thus highlights all the radiology signs in the 3D image of the breast.

Abstract: A method of imaging a breast comprising (i) having a patient lie prone on a computer-controlled couch, which comprises a channel or left and right openings, and position the left or right breast of the patient in the channel or the left or right opening, respectively, and (ii) repeatedly imaging the breast using a scanning x-ray source while moving the couch down and up, such that the breast moves down and up in the field between the source of radiation and the detector, which method can further comprise constructing a three-dimensional image of the breast in its natural shape and analyzing the three-dimensional image of the breast; and a system for use in such a method.

Abstract: A tomosynthesis apparatus has an x-ray source that generates an x-ray beam emanating from a focus, which is received by a flat panel detector. To set a tomosynthesis angle, the position of the central axis of the x-ray beam of the x-ray source is variable. A collimator diaphragm has a diaphragm aperture that limits the expansion of the x-ray beam at the location of the flat panel detector. The collimator diaphragm is arranged in the beam path between the focus and the flat panel detector. The shape and size of the diaphragm aperture are dynamically varied (adjusted) dependent on the changing tomosynthesis angle, such that the expansion of the x-ray beam at the location of the flat panel detector always essentially corresponds to the detector dimensions.

Abstract: Tomosynthesis data may be acquired from a radiation source that substantially continuously emits radiation while its position is varied relative to a photon counting x-ray detector. The detector detects photons comprised within the radiation and photon data indicative of the detected photons is generated. The photon data may comprise data related to a detected photon's detection time, detection location on the detector, energy level, and/or trajectory from the radiation source, for example. The photon data of various photons may be compiled into a plurality of bins and, through reconstruction and tomosynthesis techniques, produce synthesized images of various tomography planes of an object under examination. In this way, the tomosynthesis techniques rely on counting photons rather than measuring their energy to create synthesized images.

Abstract: A mammography system using a tissue exposure control relying on estimates of the thickness of the compressed and immobilized breast and of breast density to automatically derive one or more technic factors. The system further uses a tomosynthesis arrangement that maintains the focus of an anti-scatter grid on the x-ray source and also maintains the field of view of the x-ray receptor. Finally, the system finds an outline that forms a reduced field of view that still encompasses the breast in the image, and uses for further processing, transmission or archival storage the data within said reduced field of view.

Abstract: A method and apparatus are provided to improve CT image acquisition using a displaced acquisition geometry. A CT apparatus may be used having a source (102) and a detector (104) transversely displaced from a center (114) of a field of view (118) during acquisition of the projection data. The amount of transverse displacement may be determined based on the size of the object (108). The source and the detector may be adjusted to vary the size of the transverse field of view. The first data set acquired by the detector may be reconstructed and used to simulate missing projection data that could not be acquired by the detector at each projection angle. The measured projection data and the simulated projection data may be used to obtain a second data set. The second data set may be compared to the first data set to produce a corrected data set.

Abstract: An x-ray laminography device includes at least one x-ray detector and at least one x-ray source coupled in coordinated traversal with the at least one x-ray detector. The at least one x-ray source is configured to generate and transmit x-rays. The at least one x-ray detector and the at least one x-ray source traverse an at least partially radial travel path in unison about an object such that the object is illuminated with x-rays from a plurality of oblique radial angles defined between the at least one x-ray source and the object.

Abstract: A system for carrying out or monitoring irradiation of a moving object using a particle beam is provided. A particle beam may be directed onto the moving object from a beam outlet. X-ray images from different directions are recorded by an imaging unit. The imaging unit may include an x-ray detector and an x-ray emitter opposite the x-ray detector. The imaging unit may be positioned around the object independently of the position of the beam outlet, for example, during application of the particle beam. The X-ray images may be used to reconstruct a series of digital tomosynthesis images of the moving object online. The reconstructed digital tomosynthesis images are evaluated so that movement of the moving object is captured and the irradiation profile is controlled.

Abstract: A method for processing tomosynthesis images of an object of interest, using an imaging system, the imaging system comprising an X-ray source positioned facing a detector on which the object of interest is positioned. With the method of an embodiment of the invention, it is possible to obtain a representation of the contents of an organ.

Abstract: A system and method for tomosynthesis, the method including emitting a respective imaging x-ray from each of a plurality of imaging x-ray sources disposed in a fixed relation with respect to one another, acquiring x-ray absorption projections of an object, each of the x-ray absorption projections associated with an imaging x-ray emitted by a respective one of the plurality of imaging x-ray sources, and performing digital tomosynthesis using the x-ray absorption projections to generate a cross-sectional image of the object.