Abstract: A radiographic system is provided, which is capable of displaying brightness of laterally corresponding points with equivalent brightness, when an object having equivalent texture structures or micro areas of equivalent X-ray transmittance at laterally symmetric positions. The radiographic system includes an exposure time deriving section that obtains a period during which the object has been exposed to X-rays in a process of generating each charge signal output from an X-ray image detecting section based on vertical transfer information held at the vertical transfer information holding section, a correction coefficient deriving section that obtains a correction coefficient for correcting the value of an image signal obtained by being converted from each charge signal, based on the exposure time, and an image generating section that generates an image signal from the charge signal output from the X-ray image detecting section and the correction coefficient.

Abstract: The present invention aims to provide an X-ray detecting apparatus having excellent stability of the support of an X-ray detector, and an X-ray imaging apparatus provided with this X-ray detecting apparatus. The X-ray imaging apparatus has an X-ray irradiating device and an X-ray detecting apparatus opposing to the X-ray irradiating device, wherein the X-ray detecting apparatus has a vertical first column; a second column that is telescopically engaged with the first column; a first raising/lowering mechanism that moves up/down the second column along the first column; a carriage attached to the second column; a second raising/lowering mechanism that moves up/down the carriage along the column; and an X-ray detector held by an arm extending horizontally from the carriage.

Abstract: An imaging apparatus has an examination space in which a region of an examination subject to be examined can be positioned as well as an optical image acquisition sensor, which is provided to acquire a surface of the examination subject in the examination space and which is linked with an evaluation unit such that acquired surface data are provided as control information for controlling an image acquisition unit, in particular an x-ray device.

Abstract: A method and system is presented in radiography for optimizing image quality of an object (e.g. an anatomical region of a patient), while minimizing the radiation dose to the patient. X-ray exposure parameters, such as operating voltage (kVp), operating current (mA), focal spot size, and soft x-ray filter combination, are dynamically controlled during the x-ray exposure. During at least two different sampling intervals and at two different kVp levels, x-rays are passed through the object, and detected by sensors located between the object and the image plane. After the last sampling interval, the sensor output signals and the measured thickness of the object are used to evaluate the optimal settings for the x-ray exposure parameters. The x-ray exposure parameters are set to these optimal settings for the remainder of the exposure period.

Abstract: A conversion apparatus includes pixels including switching elements provided on an insulating substrate and conversion elements disposed over the switching elements and connected to the switching elements. Conductive lines are coupled to the pixels and have terminal elements for providing a connection to an external circuit. The terminal elements are disposed in a metal layer that is formed over the conversion elements. The conversion apparatus further includes a transparent conductive layer covering surfaces of the terminal elements, and a protective layer covering edges of the terminal elements and having openings.

Abstract: The invention relates to a method for correcting butting zone artifacts with an x-ray detector, which comprises a number of laminar detector modules arranged next to one another by forming a butting zone. To improve a known algorithm, it is proposed to determine a necessary correction width for measuring fields on the basis of a correction image.

Abstract: To speed up the availability of imaging data after the recording of an X-ray image, a method is disclosed. In the method, X-ray radiation emitted for an X-ray pulse duration is detected in an X-ray time window by an X-ray detector, and an X-ray image is recorded from it. Further, the width of the X-ray time window is continuously variably adjusted as a function of the X-ray pulse duration.

Abstract: A digital radiography system, having: a pixilated optical detector; and a mask positioned adjacent to the pixilated optical detector, the mask comprising a repeating pattern of first and second portions configured to pass different wavelengths of electromagnetic radiation therethrough such that a polychromic X-ray image can be taken using only a single X-ray exposure with a single imaging detector.

Abstract: An X-ray system includes a radiation source, a central control device, a mobile solid object detector, and a wireless communication link between the solid object detector and the control device. For an examination to run correctly, the mobile solid object detector includes a signaling unit for indicating an existing association with the central control unit.

Abstract: An imaging system that removes an electrical charge from a sensor. The system includes a generator that generates x-rays, a sensor that stores an electrical charge, a plate positioned above the sensor and a light source. A controller determines whether the electrical charge should be removed from the sensor. If it is determined that the electrical charge should be removed, the controller controls the light source to illuminate the plate to distribute the light on a top surface of the sensor. A method includes arranging a plate above the sensor and a light source next to the plate, generating x-rays towards the sensor, and storing an electrical charge in the sensor. If it is determined that the electrical charge should be removed, the light source is controlled to illuminate the plate so that the light from the light source is distributed on a top surface of the sensor.

Abstract: An industrial or medical radiation detector and a radiation imaging device equipped with the radiation detector are presented. The device improves the detection properties and production efficiency of the radiation detectors. The device includes a conductive support substrate; a semiconductor sensitivity film stacked onto the support substrate and generating a carrier (electron, positive hole) in response to an item to be detected; and means for reading equipped with an element for accumulating and reading the carrier generated by the semiconductor sensitivity film.

Abstract: A radiation imaging apparatus is capable of taking a moving picture by acquisition by a reading circuit of a plurality of radiation image signals on the basis of a plurality of successive times of irradiation of a radiation detector with radiation rays. The radiation detector has a two-dimensional array of pixels. In a period between a start of an n-th time of irradiation with radiation rays and a start of an (n+1)-th time of irradiation with radiation rays, where n is a natural number, a controller switches an operation status of an analog-to-digital converter that converts electric signals read by the reading circuit into digital signals so that power consumption of the analog-to-digital converter is reduced.

Abstract: A support and radiation therapy system is provided. The support includes an elongated support arm that is longitudinally adjustable. A first arm is rotatable in the support arm about a first axis that is perpendicular to the support arm. A flat detector is rotatable in the first arm about a second axis that is parallel to the first axis. The detector is essentially parallel to the support arm. A motor is operative to drive the rotation of the first arm. A first gear is operative to rotate the first arm and is connected to the motor. A second gear is operative to rotate the detector and is connected to the motor. The second gear is operative to rotate contrary to the first gear.

Abstract: A medical imaging equipment is described, including a radiation source for emitting measuring radiation, a receiver for receiving the measuring radiation, and a measuring region in which an object to be measured is placed, and which is situated in the beam path of the measuring radiation The receiver comprises a support which can be pivoted about a rotational axis and is adapted to mount at least two receiving devices. The receiving surfaces may be disposed alternately into a measuring position. A surface of the receiving device is parallel to the rotational axis of the support, and the rotational axis of the support is substantially perpendicular to the beam path of the measuring radiation.

Abstract: It is proposed according to the invention to record, in an image recording device for recording X-ray images, offset frames for different operating modes of said device according to a current sequence, wherein said current sequence can, by taking into account a new sequence in a comparison procedure, be changed into an updated sequence. The new sequence is based on the frequency with which the individual operating modes are used.

Abstract: A hand-held, self-contained x-ray fluorescence (XRF) analyzer produces a small x-ray spot on a sample to interrogate the elemental composition of a sample region of millimeter-size characteristic dimension. The analyzer includes a collimator for aiming an x-ray beam toward a desired location on the sample and for determining the size of the spot produced on the sample. The analyzer may include a digital camera oriented toward the portion of the sample that is, or would be, interrogated by the x-ray spot to facilitate aiming the analyzer. The analyzer may generate a reticule in a displayed image to indicate the portion of the sample that is, or would be, illuminated by the x-ray beam. The analyzer may automatically annotate the image of the sample with text or graphics that contain information about the analyzed sample. The image may be stored in the hand-held analyzer or provided for external storage or display.

Abstract: The present invention relates systems and methods for phase-contrast x-ray imaging of an object. In one embodiment, the system includes an x-ray source, a detector, and an object-map generator. The x-ray source transmits x-rays, and the detector is positioned so as to receive at least a portion of the x-rays transmitted by the x-ray source and output an image signal indicative of an intensity measurement of the x-rays received. The object is positioned between the x-ray source and the detector. The detector is then used to acquire intensity measurements at two different positions and output the same to the object-map generator. The object-map generator then utilizes the image signals of the detector, along with algorithms, including phase-retrieval algorithms to generate an attenuation-map and a phase-map for the object. The present invention also include systems and methods utilizing a dual-detector arrangement, a multi-source arrangement, and a mosaic source-detector arrangement.

Abstract: A detector module for a CT imaging system includes a scintillator to convert x-rays to optical photons. The scintillator is optically coupled to a solid-state photomultiplier with internal gain to receive the optical photons and convert them into a corresponding electrical signal output.

Abstract: A lamp emits pulse-shaped visible light when a wait period begins. If a radiation emission switch is not pressed in the wait period, X-ray radiation is not emitted from an X-ray source, and no charges are accumulated in photoelectric conversion elements of an X-ray imaging apparatus. In a non-read period, although signals are sequentially read from the photoelectric conversion elements, an output signal does not change. When the radiation emission switch is pressed in synchronization with a radiation-induced signal in a certain wait period, the X-ray source emits X-rays. After irradiation of X-rays, a photoelectric conversion period transitions to an actual read period. In the photoelectric conversion period, X-rays are emitted and transmitted X-ray information of a patient are accumulated in the photoelectric conversion elements of the X-ray imaging apparatus. In the actual read period, the accumulated information is read.

Abstract: A CT detector includes a pixel having a single photodiode and multiple charge storage devices that are alternately stored and read out. The photodiode is a frontlit diode with a pair of capacitors that alternately store charge generated during data acquisition. Multiple pixels are connected to a single readout amplifier. Charge is continuously acquired from each photodiode and stored on the charge storage devices, but such readout is from a single charge storage device at a time. As such, each charge storage device is read out independently, but the charge storage devices are connected to a common readout channel or port.

Abstract: An x-ray inspection system (198) arranged to inspect at least one object and comprising: a source of radiation (200) a detector (216), in use, capable of detecting the radiation passing through an irradiation zone (214) and generating a periodic output of data therefrom; processing circuitry arranged to process the output generated by the detector (216); a speed determination means (228) arranged, in use, to determine and output to the processing circuitry the speed at which an object passes the detector (216); wherein the processing circuitry is arranged to vary the period of the output of the detector (216) according to the output from the speed determination means (228).

Abstract: It is an object of the present invention to provide a transmission imager which can produce a transmission image from two or more different view points with the use of a simpler arrangement. The transmission imager according to the present invention is provided having a radiation source 2 for radiating radioactive rays from its target 2a, a radiation detector, and a specimen table provided between the target 2 and the radiation detector for having a specimen to be examined placed thereon, wherein the radiation detector is arranged with its detecting surface at the center P extending substantially at a right angle to a reference axis L1 or L2 which extends from the center P to the target 2a. In particular, the transmission imager is characterized in that the radiation detector is a combination of two, first and second, radiation detectors 3 and 4.

Abstract: An X-ray CT apparatus includes an X-ray tube configured to emit X-rays, a detector faced against the X-ray tube, the detector having a detector element with a plurality of slots and a plurality of a collimator boards inserted into the slots, a data acquisition system configured to receive data detected by the detector, a computer unit configured to reconstitute the data from the data acquisition system and a display configured to show images by the data.

Abstract: A mobile flat X-ray detector is for an X-ray diagnostic device. The detector includes an X-ray detector, a detector housing and a carry grip attached on a longitudinal side of the detector housing. The detector housing is provided on at least one further side with a receptacle for a carry grip and/or handle.

Abstract: The invention is related to the systems of so-called “security entrance” and, in particular, to the systems for preventing the entry of forbidden articles and/or substances from an unprotected area to a protected one. The simplicity, efficiency and secrecy of examination in a security system for preventing the entry of forbidden articles and/or substances from a surrounding area to a protected one, said system comprised of a partitioning separating a protected area from an unprotected one, at least, one walk-gate made in said partitioning, an information control-and-processing device and a detector of forbidden articles and/or substances is achieved due to said detector of forbidden articles and/or substances made an X-ray kind to provide secret examination of every person passing through said walk-gate.

Abstract: A guard-ring electrode can be used at a suitable position for each of a plurality of imaging regions. Improvement in image quality and reduction in unnecessary radiation exposure, such as reduction in artifacts or noise, improvement in SNR, and expansion in dynamic range, are realized by reducing the cross-talk or the inflow of electrical charges from ineffective regions. Based on a radiation detector having a plurality of pixel electrodes 117 and a common electrode that sandwich a photoelectric conversion layer, an interelement guard-ring electrode 111 is adjacently disposed between the pixel electrodes 117 of the radiation detecting element, and the interelement guard-ring electrode 111 is switched between an electrically open-circuit state and a ground-potential connection state, so as to change the area in which the radiation detecting element detects radiation.

Abstract: A method and an X-ray apparatus for imaging anatomical parts of the human anatomy, in particular for imaging the human spine. In order to improve the quality and the diagnostic value of projection images of the anatomical parts the invention acquires at least one initial projection image of at least the region of interest of the anatomy, to determine the positions and/or orientations of the anatomical parts in the region of interest from the at least one initial projection image and/or from other sources of information, to determine the optimum imaging parameters for the anatomical parts from their positions and/or orientations, and to acquire images of the anatomical parts while using the optimum imaging parameters. The complexity of the scene and the mixture of over-projecting structures limiting the diagnostic reliability of the projection images are thus taken into account.

Abstract: A novel image capture device, system and method are disclosed for use in capturing dental images. A novel collimator tube includes one or more devices integrated within its wall, such as a radio frequency transmitter, a camera, a frame grabber, or a transilluminator light. The integrated devices are used instead of or in addition to an x-ray generator, which is coupled to the collimator tube. The camera is used to capture digital images. The camera is either a camera port for plugging in an external camera, such as an intra-oral camera, or is wholly contained within the collimator tube. The radio frequency transmitter transmits digital data to a remote computer. The frame grabber captures digital data for display on a display device. The transilluminator light can illuminate an area for digital capture. A novel receptor holder includes a docking port for docking a sensor that is used for digital x-ray capture.

Abstract: Since a notification unit (130) notifies a radiographer of the driving state of an X-ray detector (110), he/she can identify that the X-ray detector (110) is set in a detection signal accumulation state. When the irradiation button of an X-ray generation apparatus is then pressed, a subject can be irradiated with X-rays.

Abstract: A radiation detector module includes a scintillator (62, 62?, 162, 262) arranged to receive penetrating radiation of a computed tomography apparatus (10). The scintillator produces optical radiation responsive to the penetrating radiation. A detector array (66, 66?, 166, 266) is arranged to convert the optical radiation into electric signals. Electronics (72, 72?, 172, 272) are arranged on a side of the detector array opposite from the scintillator in a path of the penetrating radiation. A radiation shield (86, 86?, 100, 100?, 100?, 186, 210, 210?, 286, 286?) is disposed between the detector array and the electronics to absorb the penetrating radiation that passes through the scintillator. The radiation shield includes openings (90, 90?) that communicate between the detector array and the electronics. Electrical feedthroughs (88, 88?, 102, 102?, 102?, 188, 212, 212?, 288, 288?) pass through the radiation shield openings and electrically connect the detector array and the electronics.

Abstract: A radiographic apparatus obtains lag-free radiation detection signals with lag-behind parts removed from radiation detection signals taken from a flat panel X-ray detector as X rays are emitted from an X-ray tube. The lag-behind parts are removed by a recursive computation on an assumption that the lag-behind part included in each X-ray detection signal is due to an impulse response formed of exponential functions, N in number, with different attenuation time constants. X-ray images are created from the lag-free radiation detection signals.

Abstract: A radiographer support system containing a storage apparatus provided in a case including a recoding medium for recording radiographic image data a recording device for recording radiograph related data of the first radiographic image data a first communication device electrically connected to the recording device for a data communication and a first electrode electrically connected to the first communication device capable of being in contact with a human body, and a wearable apparatus including a second communication device for communicating with the first communication device and a second electrode electrically connected to the second communication device capable of being in contact with a human body wherein the first communication device communicate with the second communication device for transmitting the radiographic image data or X-ray photograph related data each other via a human body as a transmission line.

Abstract: An x-ray diagnostic imaging system with an x-ray irradiation unit for irradiating an object; an x-ray diaphragm unit for shielding the irradiated x-rays except for the x-rays irradiated on a portion used for obtaining an x-ray image of the object; an x-ray diaphragm setting unit for variably setting the portion to be shielded; an x-ray flat panel detector opposed to the x-ray irradiation unit via the object to be examined; an image processing unit for subjecting the x-ray image to an image processing; and a display unit displaying the x-ray image. The image processing unit includes a calculation unit reading out data of an x-ray detection element and calculating a line noise component from the read out data; and a line noise correction unit correcting a line noise of the x-ray image based on the line noise component calculated by the calculation unit.

Abstract: A mobile X-ray detector system is disclosed including a mobile X-ray detector and a mobile dosimeter arranged on the X-ray detector, at least during operation. Furthermore, an X-ray facility is disclosed for cooperating with such an X-ray detector system, an X-ray system including such an X-ray facility, and a corresponding X-ray detector system, as well as a mobile dosimeter and a mobile X-ray detector for constructing such an X-ray detector system.

Abstract: The invention relates to a radiation detector apparatus (10) with an array (12) of detector pixels. Each pixel (20) of the detector comprises a photogate electrode (21) under which electrical charges produced by incident radiation (v, X) are collected. The change of these charges gives rise to displacement currents in photogate lines (32) connected to the photogate electrodes (21) which may be monitored by current sensors (40). Thus the charges collected by all photogate electrodes (21) connected to a photogate line (32) can be measured during an ongoing exposure, allowing for advanced dose control methods of the illumination.

Abstract: An X-ray image radiographing system according to the present invention comprises an X-ray generator, a detection unit, a correction unit for performing a correction processing for the data outputted from the detection unit, and an output unit such as a monitor for outputting data processed by the correction unit. Moreover, it comprises a control unit for controlling the detection unit, the X-ray generator and the correction unit, a radiographing condition memory accessible by the control unit, a radiographing button for making a radiographing request to the control unit, a radiographing mode setting unit for setting a radiographing mode in the control unit, and a photo timer having an AE function. The radiographing mode setting unit may be constituted of a workstation, for example. Thereby, it is possible to provide an image radiographing apparatus and the image radiographing system capable of easily coping with a plurality of radiographing modes.

Abstract: The invention relates to a large-area sensor arrangement, notably a flat dynamic X-ray detector (FDXD). The light-sensitive and/or X-ray-sensitive sensors (pixels) of the sensor arrangement are arranged in a planar distribution on a substrate (1), thus forming a sensitive layer (20). On the top surface of the layer (20) there is provided a contact point (23) for each sensor, which contact point is connected to an integrated circuit (6) via one or more connection layers (30, 40). A multi-layer, very compact construction is thus obtained in which the electronic evaluation circuitry (6) is arranged in a planar fashion and parallel to the sensors (20). Preferably, a respective evaluation circuit in the circuit (6) is associated with each sensor, resulting in very short paths and also in a reduction of noise.

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: An X-ray detector to make possible digitization of an existing X-ray imaging apparatus is to be realized. Also an X-ray detector excellent in versatility is to be realized. This is an X-ray detector having a flat panel type detector unit for detecting the two-dimensional intensity distribution of incident X-rays and an interface unit for a detection signal utilizing device, and the interface unit conforms to open standards regarding images for medical use and communication. The interface unit has a first node on the detector unit side, a second node on the detection signal utilizing device side and a network linking them. The network is the Ethernet. The first node and the second node perform communication conforming to TCP/IP. The first node is integrated with the detector unit. The open standards regarding images for medical use and communication are the DICOM standards.

Abstract: A method of testing a portable x-ray device includes sensing an environmental stimulus experienced by the portable x-ray device, transmitting a signal related to the environmental stimulus to a processing unit, determining whether the signal meets an alert threshold, activating a detector of the portable x-ray device if the signal meets the alert threshold, producing a gray image through the activating step, comparing the gray image produced through the activating step with a control gray image corresponding to a properly functioning detector.

Abstract: Scatter effects are reduced in a radiographic imaging device, such as a digital slot scan mammographic imaging device, by reducing detected scatter and processing detector information to compensate for scatter effects. A digital mammographic imaging system (10) may include a source (24) for transmitting a narrow beam (28) and a detector assembly (32) for detecting the beam (28). The beam (28) and the detector assembly (32) may synchronously scann across the patient's breast (48) to obtain an image. Collimator slats (74) at the leading and trailing edges of the detector may reduce detected scatter. Attenuators (76 and 92) at the ends of the scanned motion and at the anterior edge of the detector array may assist in determining a spatial intensity profile. The spatial intensity profile information together with other imaging signal and patient dependent parameters may be used to estimate and compensate for various scatter effects.

Abstract: A system is described for obtaining intraoral radiographic images using an anatomically conforming sensor and a method is described for correcting the projective distortions caused by the inclination of the plane of the imaging sensor relative to the x-ray beam. The purpose of the described sensor system is to reduce patient discomfort as compared to conventional planar intra-oral x-ray sensors, which tend to impinge on sensitive tissues within the oral cavity. An additional purpose of the described system is to allow for better coverage of the subject by allowing the sensor to fit closer against the surrounding tissues.

Abstract: A unit (11) with a length (L) is utilized in a device for indicating the position of an edge (7a) of a first area (7) which is irradiated by an x-ray radiation source (2) in relation to an edge (9a) of a second area, completely or partially coinciding with the first area, which second area is illuminated by a light source. The unit is provided with a first and second parts separated by a mark (12), which parts are intended to extend inside the second area and outside the second area respectively. The unit (11) comprises x-ray radiation-indicating elements (14, 22) that assume a first indication state in the presence of x-ray radiation (6) and a second indication state in the absence of x-ray radiation. The position indication can be determined by means of the said mark and indication states. The invention also relates to an arrangement and a method for the said position indication.

Abstract: An x-ray receiver for an x-ray apparatus is disclosed. In at least one embodiment, the x-ray receiver includes a detector holding apparatus designed such that it can be connected to a detector for receiving x-rays. The x-ray receiver also includes an x-ray grid, connected to the detector holding apparatus, for reducing scattered x-rays, which is designed and arranged to attenuate scattered x-rays with at least one predetermined directional component parallel to a detector plane. In at least one embodiment, the x-ray receiver includes at least one sensor for detecting x-rays that is designed and arranged to detect x-rays striking the detector and, as a function of the detected x-rays, to generate an irradiation signal that represents an x-ray dose or x-ray intensity of the detected x-rays.

Abstract: At least one exemplary embodiment is directed to a radiography apparatus configured to have an offset reading period, where during the offset reading period an offset reading operation is performed without illumination by radiation (e.g., X-rays). The offset reading period can be different from a radiation (e.g., X-ray) reading period in timings of applying a gate pulse. During the offset reading period, a pixel addition can be performed such that the switching elements corresponding to two or more lines are concurrently turned on-off thus reducing the offset reading period.

Abstract: A radiation detector is disclosed for x- or gamma rays. In at least one embodiment, the radiation detector includes an array of scintillation detectors and a reflector layer separating these from one another. The reflector layer includes a binder matrix and particles of a light-reflecting material embedded therein, the surfaces of the particles being coated at least partially with a dispersant.

Abstract: A solid-state X-ray detector comprising a photosensitive sensor combined with a radiation converter or scintillator is described. The radiation detector includes an entry window through which the X-rays upstream of the scintillator pass, and means for applying an electrical voltage between the entry window and the photosensitive sensor.

Abstract: A portable, self-contained, electronic radioscopic imaging system uses a pulsed X-ray source, a remote X-ray sensor, and a self-contained, display and controller unit to produce, store, and/or display digital radioscopic images of an object under investigation. The pulsed X-ray source transmits a burst of narrow pulses of X-rays at the object being investigated at a low repetition rate. The X-ray sensor utilizes an X-ray scintillating screen in combination with either an integrating CCD camera, or an active matrix of thin film transistors and sample-and-hold photodiodes, to produce an integrated signal representative of the accumulated number of flashes of radiation that are sensed in a given pixel area of the scintillating screen. The self-contained display and controller unit utilizes digital signal processing within an enhanced portable computer, including a flat solid state display panel and associated drive circuitry, in order to display the full dynamic range and resolution of the sensor.

Abstract: The scintillating screen of digital imaging systems used in conventional transmission electron microscopy is discretized and the scintillating material is contained in a cellular structure having a geometry judiciously selected for coupling to the optical channels of the imaging system. This allows optical matching, without smearing, between the elements of the scintillating screen and the discrete light-collecting and light-registering optical channels of the system. Cross-talk among optical channels is consequently minimized and the resulting light-imaging resolution of the digital imaging system is optimized.

Abstract: A focal spot sensing device includes: a housing that resists x-ray beams; an opening disposed in a wall of the housing that allows an x-ray beam to enter the housing; and a sensor device disposed in the housing that interprets a position of the x-ray beam for calculating a position of a focal spot. An imaging system includes: an x-ray source that produces an x-ray beam and has a focal spot; a detector array that receives the x-ray beam and includes a focal spot sensing device, the focal spot sensing device includes: a housing that resists x-ray beams; an opening disposed in a wall of the housing that allows the x-ray beam to enter the housing; and a sensor device disposed in the housing that interprets a position of the x-ray beam for calculating a position of the focal spot. A method for sensing a focal spot, the method includes: receiving an x-ray beam into an opening of a focal spot sensing device; interpreting a position of the x-ray beam; and calculating or measuring a position of a focal spot.