Abstract: An electronic x-ray imaging sensor that flexibly fits within a patient's mouth includes a flexible portion and a rigid portion. The flexible portion includes an array of detection devices, and the rigid portion includes complementary circuitry for controlling and/or obtaining image data from the array. The flexible portion may be detachable from the rigid portion, which allows the flexible portion to be disposable while the detachable portion is reusable.

Abstract: In a device and associated method for monitoring solid-state detectors, image segments of a test image (such as, for example, a dark current image) from solid-state detectors are evaluated and further usability of the solid-state detector is indicated using assessment criteria.

Abstract: A method and system for detecting the potential of an x-ray imaging system to create images with scintillator hysteresis artifacts includes examining an x-ray image to measure two signal levels for two areas of interest, then determining a difference between the two signal levels and comparing the difference to a threshold. The signal levels can be measured by determining an amount of electrical charge discharged in photodiodes of the detector. If the difference in signals is greater than the threshold amount, then the possibility exists that scintillator hysteresis artifacts may be produced in images. In addition, the present invention also provides for the elimination or reduction in magnitude of scintillator hysteresis artifacts in images produced by an x-ray imaging system. After the possibility of scintillator hysteresis artifacts is detected, the detector can be irradiated with an x-ray flux to eliminate or reduce the magnitude of the artifacts in images produced by the x-ray imaging system.

Abstract: For performing imaging with a high-frame rate, a control apparatus determines the time where at least one electrical charge of a sensor is read based on information about the position of an irradiation area of the sensor, the irradiation area being irradiated with a radiation, so that the time period where at least one electrical charge of a non-irradiation area of the sensor is read, the non-irradiation area being irradiated with no radiation, overlaps the time period where irradiation with the radiation is performed and the time period where at least one electrical charge of the irradiation area of the sensor is read does not overlap the radiation-irradiation-time period.

Abstract: In a method for calibration of an image-generating x-ray system with a digital x-ray receiver and an x-ray system operating with this calibration method, a number of first offset-corrected bright images are determined at a first constant reference temperature of the x-ray receiver respective at a number first dose settings. A second offset-corrected bright image are subsequently determined at a number of second reference temperatures and at second dose settings that correspond to respective first dose settings. A quotient image is calculated from the second bright image and the first bright image for each of these reference temperatures and is stored. A multi-point calibration at various reference temperatures is implemented with low time expenditure in this manner.

Abstract: A system may include a body defining a plurality of apertures, a plurality of conductive elements, each of the plurality of conductive elements disposed within a respective one of the plurality of apertures, an ionizable material disposed within each of the plurality of apertures, and a device coupled to each of plurality of conductive elements and to associate charge received from each of plurality of conductive elements with one or more respective image pixels.

Abstract: A CT detector cell is constructed to have diagonally oriented perimeter walls. With such a construction, the resulting CT detector comprised of such detector cells has improved spatial coverage (spatial density). The number of detector channels is also not increased despite the increase in spatial coverage. Moreover, the detector cells can be constructed without much variance from conventional fabrication techniques.

Abstract: To provide a radiation imaging apparatus which is capable of both connecting state radiographing for radiographing with a C arm connected and non-connecting state radiographing for radiographing with the C arm disconnected, and is convenient and obtains high quality images, the apparatus includes: a flat panel detector; a holding unit for holding at least the flat panel detector; and a control unit for controlling the flat panel detector.

Abstract: A CMOS-based sensor apparatus comprises an array of sensor cells that are interconnected by a first set of vertical driver lines to a selective driver facility and by a second set of horizontal sensing lines to a sensing facility for sensing respectively sensed amounts of radiation. In particular, the sensor cells through being appropriately spaced in at least either row or column direction, comprise a redundancy facility that is selectively activatable for isolating an interconnect short on the basis of externally applied control actuation.

Abstract: According to at least one embodiment of the invention, the measurement of an image dose is performed in the flat X-ray detector itself. The flat X-ray detector, in at least one embodiment, has a scintillator that converts the incident X-rays into light. The actual image signals are then generated in a light converting layer. A portion of the light generated by the scintillator is branched off, with the use of fiber optic elements, to at least one photocounter. The fraction of the branched off light is fixed, that is to say a measured value determined by the photocounter is proportional to the image dose. It is thereby possible to determine the image dose provisionally during image recording, and to intervene for control purposes by, if appropriate, changing the image recording period (beam time on X-ray tube) and the operating voltage of an X-ray tube during the image recording.

Abstract: A radiation image capturing system detects the position of a radiation detecting cassette disposed below a patient and the position of a radiation source for emitting a radiation, based on the differences between the propagation times of radio waves emitted from an antenna device to an image capturing apparatus and the radiation detecting cassette. Based on the detected positions, the relative positions of the image capturing apparatus and the radiation detecting cassette are calculated, and then compared with each other by a position determining unit to judge how the image capturing apparatus is positioned with respect to the radiation detecting cassette. If the image capturing apparatus is not positioned in head-on facing relation to the radiation detecting cassette, then a warning is issued, and an actuating mechanism moves the image capturing apparatus to an appropriate position.

Abstract: A system is provided for rotating a detector of an imaging system about an axis of rotation. The system includes a shaft extending a length between a pair of opposite end portions. The shaft is threaded on an exterior surface thereof. A carriage is mounted on the shaft. The carriage is threadably connected to the shaft such that rotation of the shaft moves the carriage along the length of the shaft. A connection member has a first portion mounted on the carriage, and a second portion configured to be connected to the detector such that movement of the carriage along the shaft rotates the detector about the axis of rotation.

Abstract: A radiographic apparatus includes a detection section including photoelectric conversion elements that detect radiation that has been transmitted through a subject. The apparatus has a substantially rectangular detection surface; and a housing that contains the detection section. The housing has a handle in an area along a longer side of the detection surface when viewed along a direction normal to the detection surface.

Abstract: A diagnostic imaging system includes a high frequency electromagnetic energy source that emits a beam of high frequency electromagnetic energy toward an object to be imaged. An energy discriminating (ED) detector receives high frequency electromagnetic energy emitted by the high frequency electromagnetic energy source. The ED detector includes a direct conversion layer dynamically operable in a photon counting mode in one view and in an integrating mode in another view and an indirect conversion layer. A data acquisition system (DAS) is operably connected to the ED detector and a computer operably connected to the DAS.

Abstract: The present invention refers to a radiation system (1) comprising an excentric gantry (100) arranged in connection with multiple treatment rooms (61-68) separated by radiation-shielding separating members (71-78). A movable rotation head (120) is connected to the gantry (100) and is able to move between, and direct a radiation beam (110) into, the treatment rooms (61-68). A simulator head (200-1 to 200-8) is preferably arranged together with the radiation system so it can be used in each respective treatment room (61-68). In such a case, while a first subject (40-1) is being irradiated in a first room (61), a treatment set-up procedure, including correct positioning of subjects (40-2 to 40-8) and irradiation simulation, can simultaneously take place for the other subjects (40-2 to 40-8) in the other treatment rooms (62 to 68).

Abstract: A high frame rate X-ray system has an X-ray generator and detector for detecting the X-ray radiation from the X-ray generator, wherein the X-ray generator continuously generates X-rays while X-ray images are captured with a high frame rate by the detector.

Abstract: A data acquisition device, which has an X-ray detector including a plurality of channel widths at which channels at its central portion are fine and channels at its peripheral portions are coarse or rough, and a plurality of data acquisition ranges including a data acquisition range wide in a channel direction and a data acquisition range narrow in the channel direction, and which is capable of performing switching among the data acquisition ranges for each data acquisition, is used to perform data acquisition on the channels fine at the central portion in the data acquisition range narrow in the channel direction, whereby an X-ray CT apparatus is provided which is capable of performing high-resolution imaging and brings about more satisfactory image quality.

Abstract: A focus/detector system of an X-ray apparatus is disclosed, for generating projective or tomographic phase contrast recordings. The system, in at least one embodiment, includes at least of a beam source, having a focus and a focus-side source grating, arranged in the beam path and to generate a field of ray-wise coherent X-rays, and a detector arrangement having a multiplicity of grating/detector modules arranged next to one another. The detector arrangement, in at least one embodiment, which respectively include, arranged successively in the beam direction, at least one phase grating for generating a first interference pattern, an analysis grating for generating a further interference pattern, and detector elements arranged flat. The individual grating lines of all gratings are aligned mutually parallel.

Abstract: A detector holder for a flat panel x-ray detector has a mechanical plug interface that allows flat panel x-ray detectors of respectively different types to be connected to and held by the detector holder. An x-ray system equipped with such a detector holder can be used flexibly for different applications respectively requiring different types of flat panel x-ray detectors. The type of the flat panel x-ray detector currently retained by the detector holder can be automatically detected and used by the data processor that processed output signals from the currently-employed flat panel x-ray detector.

Abstract: A method and apparatus for analyzing fluids by means of x-ray fluorescence. The method and apparatus are applicable to any fluid, including liquids and gases, having at least one component that emits x-ray fluorescence when exposed to x-rays. The apparatus includes an x-ray source (82) including an x-ray tube (64) having improved heat dissipating properties due to the thermal coupling of the x-ray tube with a thermally-conductive, dielectric material (70, 1150). The x-ray tube also includes means for aligning (100, 2150, 2715) the x-ray tube with the x-ray source housing whereby the orientation of the x-ray beam produced by the x-ray source can be optimized, and stabilized various over operating conditions. The method and apparatus may also include an x-ray detector having a small-area, for example, a PIN-diode type semiconductor x-ray detector (120), that can provide effective x-ray detection at room temperature.

Abstract: A radiography apparatus includes a conversion unit having conversion elements arranged in a row-column pattern. In an object-image reading operation, the conversion unit detects an object image based on illuminated radiations, and a drive circuit drives the conversion unit so as to allow the conversion unit to output a signal based on the object image. In an offset-data reading operation, the conversion unit detects offset data in a period when the radiations are not illuminating, and the drive circuit drives so as to allow the conversion unit to output a signal based on the offset data. When the numbers of lines driven concurrently in the object-image reading operation is represented by n (equal to 1 or greater) and the numbers of lines driven concurrently in offset-data reading operation is represented by m, the drive circuit controls the conversion unit so as to satisfy the expression: n<m.

Abstract: Disclosed is a multi-array detector module structure pertaining to the technical field of radiation detecting. The multi-array detector module structure comprises a casing, a bottom plate to which a bottom end of the casing is fixedly connected, and a multi-array detector composed of a plurality of detectors, wherein a mounting frame is disposed on the bottom plate, and the mounting frame includes an upper plate and a lower plate. The multi-array detector comprises two rows of peripheral detector arrays fixed to the upper plate and the lower plate of the mounting frame, respectively, and at least one row of middle detector array disposed between the two rows of peripheral detector arrays and fixed to the same. Heavy metal sheets are provided between respective detector arrays in respective rows of detector arrays, for reducing cross talk.

Abstract: A method includes thermally stabilizing a Computed Tomography (CT) detector module.

Abstract: A radiographing system wherein, in the “Receiving” state of having received the radiographing order from one control terminal apparatus, an FPD does not receive other radiographing reservation, or in the “Receiving” state of having received the radiographing order from one control terminal apparatus, a management server does not receive any other radiographing order.

Abstract: A radiology device includes an X-ray source for exposing a subject to the radiation of said source, a converter for converting the X-rays into optical images so as to form primary optical images, a transformer for transforming the primary optical images into secondary optical images, and a display for displaying the secondary images to a user. The transformer includes an optical chain including, in succession, from the output of the converter to the output of the device, an image enlargement assembly exposed directly to the primary images from the converter, an assembly for optical intensification of the enlarged images, and a photosensitive matrix sensor for making the secondary images.

Abstract: A mount for an image receiver is provided. The mount includes at least two opposite edges that include a section with a curved contour. At least one of the sections of the mount is curved concavely. The concave curvature enables the use of a mount for x-ray lung radiographs or mammographs. The section may also be embodied as a concave-convex section.

Abstract: A conversion apparatus of the present invention includes a pixel region in which a plurality of pixels are arranged. The pixels are including the switching elements and the conversion elements. The pixel region includes a switching element region in which the plurality of switching elements are arranged in row and column directions, and a conversion element region in which the plurality of conversion elements are arranged in row and column directions. A plurality of signal wirings are including a second metal layer, and connected to the plurality of switching elements of the column direction. Bias wirings are including a fourth metal layer, and connected to the plurality of conversion elements. An external signal wiring is including the first metal layer outside the pixel region, and connected to the signal wirings. The external signal wiring and the bias wiring intersect each other.

Abstract: An X-RAY CONVERTER having a light-proof housing with an X-ray-transparent wall behind which there are fastened an X-ray-to-optical converter, a filter of residual X-radiation, an objective lenses unit, and a photodetector containing at least two optoelectronic converters with partly overlapping fields of view and separated electrical outputs for connection to a system for processing of fragmentary video signals and generating an integral output video signal.

Abstract: A CT detector includes a scintillator module including at least one scintillator configured to be impinged with radiographic energy from a radiographic energy source, at least one indexing pin connected to the scintillator module, and a collimator assembly having at least one comb, wherein the collimator assembly defines a relative position of the at least one comb, and wherein the at least one comb has a plurality of teeth configured to engage the at least one indexing pin.

Abstract: In flat-panel X-ray detectors which have a multiplicity of detector elements which are in each case associated with one pixel of an X-ray image, the individual detectors generate offset signals. These offset signals are detected by recording offset images in which there is no X-ray irradiation (dark images). The offset images are recorded after the X-ray images to be corrected in time. If for each X-ray image record, an associated offset image record is generated by using a single offset image or of two, the offset images can be recorded closely in time. Ghosting effects are then not disturbing because the offset images are only used for correcting the X-ray images which cause the ghosting.

Abstract: The invention relates to a detector and a method for the production of consecutive X-ray images. This involves the generation in the detector by X-radiation during an exposure interval (Texp) of a current flow (I(t)) which is integrated (Qdk*, Qsig*, Qac*) in a memory capacity and read out in a subsequent readout phase (Trd). In order to minimize the influence of slowly decaying residual currents (Iac), the current (I(t)) is integrated only during the exposure interval (Texp). By this means, disturbing artifacts due to residual signals from earlier photographs are minimized.

Abstract: A method and apparatus for generating a digital X-ray image is disclosed. The method comprises starting an exposure period wherein an array of X-ray receptors are exposed to X-ray radiation, varying the energy of the X-ray radiation during the exposure period and generating a data value for each receptor in the array of X-ray receptors. Each data value corresponds to the time elapsed between the start of the exposure period and the time at which the magnitude of the X-ray radiation incident upon the corresponding receptor passes a reference value. The data values are processed to generate an image. The apparatus includes an X-ray generator, a clock, an array of X-ray receptors, a comparator, a storage medium, and a processor.

Abstract: A method for inspection of a sample includes irradiating the sample with a beam of X-rays and measuring a distribution of the X-rays that are emitted from the sample responsively to the beam, thereby generating an X-ray spectrum. An assessment is made of an effect on the spectrum of a non-uniformity of the beam, and the spectrum is corrected responsively to the effect.

Abstract: To prevent an imaging of an antiscatter grid particularly effectively, even in the case of dynamic applications, an antiscatter grid is disclosed for an X-ray detector which exhibits an active pixel matrix. The antiscatter grid, in at least one embodiment, includes absorbing laminas, aligned substantially parallel to the direction of an X-radiation, for reducing a scattered radiation in an X-ray machine. The absorbing laminas are movable in a fashion perpendicular to the direction of the X-radiation at a minimum frequency value of 10 Hz, and at a maximum travel value of two pixel sizes of the X-ray detector that can be assigned to the antiscatter grid.

Abstract: To guarantee a largely uncorrupted x-ray image for a solid-state detector with a pixel matrix featuring pixel elements comprising at least two plate elements arranged in one plane, whereby a first and a second plate element exhibit a displacement in relation to one another, a correction method is provided, whereby a digital raw x-ray image is read out from the pixel matrix and a discontinuity generated in the digital raw x-ray image by the displacement of the plate elements in relation to each other is removed at least partly from the image by an image processing correction. In accordance with an embodiment of the invention the second plate element has a displacement from the first plate element and the discontinuity generated is removed at least partly by an image processing correction from the section of the digital x-ray image which is formed by the pixel elements of the displaced second plate element.

Abstract: The present invention provides a digital topography imaging system for determining the crystalline structure of a biological macromolecule, wherein the system employs a charge coupled device (CCD) camera with antiblooming circuitry to directly convert x-ray signals to electrical signals without the use of phosphor and measures reflection profiles from the x-ray emitting source after x-rays are passed through a sample. Methods for using said system are also provided.

Abstract: A system for spectroscopic imaging of bodily tissue in which a scintillation screen and a charged coupled device (CCD) are used to accurately image selected tissue. Applications include the imaging of radionuclide distributions within the human body or the use of a dual energy source to provide a dual photon bone densitometry apparatus that uses stationary or scanning acquisition techniques. An x-ray source generates x-rays which pass through a region of a subject's body, forming an x-ray image which reaches the scintillation screen. The scintillation screen reradiates a spatial intensity pattern corresponding to the image, the pattern being detected by a CCD sensor. The image is digitized by the sensor and processed by a controller before being stored as an electronic image. A dual energy x-ray source that delivers two different energy levels provides quantitative information regarding the object being imaged using dual photon absorptiometry techniques.

Abstract: A radiation damage resistant linear X-ray detector array system based on a unique focusing principle reduces or eliminates the X-ray radiation damage on the electrical components of the detector system. The system includes a layer of scintillating material, a rod lens array, and an array of image sensors. The layer of scintillating material, such as Gd2O2S:Tb (GOS or GADOX), CsI(TI), or CdWO4, is placed on an image plane and used to convert the impinging X-ray energies into visible light which can be detected efficiently by the image sensor array. The rod lens array is used to focus the visible light after the X-ray flux has been converted. The photon energy of the visible light is collected with a scanning image sensor array that converts the photon energy proportionally into electrical video signals and enables the signals to be processed using standard signal and image processing software and equipment.

Abstract: A radiation damage resistant linear X-ray detector array system based on a unique focusing principle reduces or eliminates the X-ray radiation damage on the electrical components of the detector system. The system includes a layer of scintillating material, a rod lens array, and an array of image sensors. The layer of scintillating material, such as Gd2O2S:Tb (GOS or GADOX), CsI(TI), or CdWO4, is placed on an image plane and used to convert the impinging X-ray energies into visible light which can be detected efficiently by the image sensor array. The rod lens array is used to focus the visible light after the X-ray flux has been converted. The photon energy of the visible light is collected with a scanning image sensor array that converts the photon energy proportionally into electrical video signals and enables the signals to be processed using standard signal and image processing software and equipment.

Abstract: An X-ray detector for drive timing setting is provided outside an image taking region of a sensor unit. Thus, an X-ray image taking device is constructed such that a case structure is simple and a preferable image which is not affected by back-scattering can be captured.

Abstract: Corrected X-ray detection signals are obtained by removing lag-behind parts through a recursive computation based on initial values determined from lag signal value (step T2). Thus, the lag-behind parts can be removed by taking into consideration lag signal values remaining at a starting point of the recursive computation. The lag signal values are dependent on the characteristic of an FPD (flat panel X-ray detector). By removing the lag-behind parts, with the lag signal values taken into consideration, the lag-behind parts are removed from X-ray detection signals with increased accuracy, without being influenced by the characteristic of the FPD.

Abstract: To guarantee a largely uncorrupted x-ray image for a solid-state detector with a pixel matrix featuring pixel elements comprising at least two plate elements arranged in one plane, whereby a first and a second plate element exhibit a displacement in relation to one another, a correction method is provided, whereby a digital raw x-ray image is read out from the pixel matrix and a discontinuity generated in the digital raw x-ray image by the displacement of the plate elements in relation to each other is removed at least partly from the image by an image processing correction. In accordance with an embodiment of the invention the second plate element has a displacement from the first plate element and the discontinuity generated is removed at least partly by an image processing correction from the section of the digital x-ray image which is formed by the pixel elements of the displaced second plate element.

Abstract: A variable-resolution x-ray (VRX) scanner apparatus forms Computed Tomographic (CT) x-ray images of a subject. The detector array comprises a plurality of detector cells that detect the x-ray radiation at a spatial resolution that is dependent at least in part on cell-to-cell spacing in the array and the orientation of the array with respect to the X-axis and Z-axis. The detector array is operable to be tilted with respect to the Z-axis. The tilt angle of the array, which is preferably 45 degrees, defines an angular relationship between the Z-axis and a pivot axis of the array, where the pivot axis passes through the origin of the XYZ coordinate system. The detector array is operable to be pivoted about the pivot axis and positioned at a pivot angle with respect to the X-axis. The pivot angle defines an angular relationship between the detector array and the X-axis.

Abstract: Variable-Resolution X-ray (VRX) techniques boost spatial resolution of a Computed Tomographic (CT) scanner in the scan plane by two or more orders of magnitude by reducing the angle of incidence of the x-ray beam with respect to the detector surface. A multi-arm multi-angle VRX detector for targeted CT scanning allows for “target imaging” in which an area of interest is scanned at higher resolution than the remainder of the subject, yielding even higher resolution for the target area than that obtained from prior VRX techniques. In one embodiment, the VRX-CT detector comprises four quasi-identical arms, each containing six 24-cell modules made of individual custom CdWO4 scintillators optically-coupled to custom photodiode arrays. The maximum scan field is 40 cm for a magnification of 1.4. A significant advantage of the four-arm geometry is that it can transform quickly to a two-arm or single-arm geometry for comparison studies and other applications.

Abstract: A digital dental image apparatus comprising: (A) an intra-oral image sensor configured to output a raw analog video signal; (B) a processing raw analog video signal (PRAVS) means for processing the raw analog video signal for optimum detection; (B) a digitizing, over sampling, and averaging (DOSA) means for digitizing, over sampling, and averaging the optimized analog video signal; and (C) a programmable control and signal processing (PCSP) means configured to generate a control signal to control an over sampling rate of the (DOSA) means. The PCSP means is configured to process the DOSA video signal, and configured to output the processed DOSA video signal to an output network interface.

Abstract: A detector assembly is presented. The detector assembly includes a first detector layer having a top side and a bottom side, where the first detector layer includes a plurality of first coupling gaps. Additionally, the detector assembly includes a first interconnect structure operationally coupled to the first detector layer and configured to facilitate transfer of a first set of image data from the first detector layer to backplane electronics. The detector assembly also includes a second detector layer having a top side and a bottom side and disposed adjacent the bottom side of the first detector layer, where the second detector layer includes a plurality of second coupling gaps configured to facilitate passage of the first interconnect structure from the first detector layer to the backplane electronics.

Abstract: The invention refers to a medical imaging device (1) comprising an X-ray source (2) for irradiating an object to be imaged. Detector means (3) having an adjustable orientation detect the X-rays after passage through the object. Conversion means convert the detected X-rays into image data. Processing means (4) process the image data, that are displayed on display means (5) having an adjustable orientation. Means (8) are provided for rendering the orientation of the detector means and the orientation of the display means essentially equal, thus enhancing the efficiency of use of the display area.

Abstract: A method for obtaining an X-ray image for an X-ray diagnosis apparatus including plurality of imaging systems, including: collecting first scatter data using a first X-ray detector after an X-ray is irradiated from a first X-ray tube in a first imaging system; collecting second scatter data using a second X-ray detector after an X-ray is irradiated from a second X-ray tube in a second imaging system; collecting first image data including a scatter component using X-ray detectors after an X-ray is irradiated from a third X-ray tube in the first imaging system; collecting second image data including a scatter component using X-ray detectors after an X-ray is irradiated from a fourth X-ray tube in the second imaging system; and obtaining X-ray images for the first and second imaging systems by subtracting the first and second scatter data from the first and second image data including a scatter component, respectively.

Abstract: A method of measuring in real time a dose of radiological radiation absorbed by a region under inspection subjected to a flux of radiological radiation, the method comprising the steps consisting in: a) detecting the incident radiation at at least one point of the region under inspection using at least a first bundle of measurement optical fibers (2) containing at least one fiber placed in said region under inspection and adapted to generate a light signal on receiving radiological radiation; b) measuring said light signal away from the region under inspection after it has been transmitted along the measurement optical fiber; and c) determining the dose of radiological radiation received by said measurement optical fiber on the basis of said light signal.

Abstract: The present invention is a directed to a cover assembly for an x-ray detector that incorporates impact-absorbing material designed to absorb the shock, vibration, stress, and strain placed on the detector when dropped or subjected to a load. The cover assembly may include a layer or inserts of impact-absorbing material. Bumpers of impact-absorbing material may also be secured to the x-ray detector cover. Viscoelastic foam or other plastics may be used as the impact-absorbing material.