Abstract: An X-ray apparatus is provided for acquisition of images containing spectral information. An X-ray source and a collimator having multiple slits are operable together with a set of line detectors, the line detectors including linear arrays of photon counting channels. Each of the channels includes a photon conversion channel element which is operable to convert photons to electric pulses. A plurality of pulse counters are operable to count pulses in a plurality of different ranges of pulse strength, where the strength of a pulse depends on the energy of the photon. Further, an arrangement is included for an energy subtracting operation.

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: In a method and apparatus for generation of a digital x-ray image of an examination subject with an x-ray tube and a digital x-ray detector, a preliminary total dose required for correct exposure is determined using prior knowledge and a complete pre-image of the examination subject is acquired with a partial dose that is smaller than the preliminary total dose. A remaining dose is determined from the pre-image by image evaluation. A complete following image is acquired with this remaining dose, and the final x-ray image is assembled from the pre-image and the following image.

Abstract: An image processing method generates a small number of still images from a plurality of projected time-series images obtained in time series. The method includes storing the time-series images and performing subtraction between a value of a pixel of an entire or a part of at least one time-series image and a value of a corresponding pixel of an entire or a part of another time-series image. The method further includes detecting the presence or absence of motion by comparing a difference value obtained by performing the subtraction and a threshold value. The stored time-series images are synthesized based on a result of the motion detecting so as to generate a predetermined number of synthesized images.

Abstract: Disclosed are imaging systems, methods, and computer program products that generate estimates of scattered radiation in tomographic imaging systems, such as cone-beam computerized tomography (CBCT) systems, and the like. In an exemplary embodiment, a first group of projections is taken of an object with the radiation covering a wide band of the object, and a second group of projections is taken of the object with the radiation covering a narrower band of the object. The projections of the second group cover less of the object, but have less scattered radiation. The scattered radiation within the narrower band may be estimated from differences between projections from the first and second groups, or from representations thereof.

Abstract: Described herein is a portable, self-contained, electronic radioscopic imaging system that utilizes a multiple camera imager and advanced processing techniques to image suspicious containers. An X-ray sensor or imager utilizes a scintillating screen that produces flashes of light when impinged by an X-ray in combination with at least one camera, or the like, to produce an integrated signal that represents the sum of a prescribed number of flashes of radiation that pass through the object in a given pixel area. A self-contained display and control unit utilizes digital signal processing in order to display to an operator the full dynamic range and resolution of an image-capturing novel sensor utilized within the imager.

Abstract: An X-ray machine being able to irradiate a narrowed portion within a maximum irradiation range through a control to the electrodes of an X-ray generator is provided. The X-ray machine includes a controllable X-ray generator, a digital camera and a control unit. The digital camera produces a digital visible-light image the same as the maximum irradiation range of the X-ray generator. A narrowed image portion within the digital image can be selected by the control unit. The control unit generates control signals corresponding to the selected image portion. The X-ray generator emits X-rays onto an object portion corresponding to the selected image portion based on the control signals.

Abstract: On a production line for component mounting substrate, mutually communicating inspection apparatus are each provided to a different one of production processes that are carried out sequentially such as the solder printing, component mounting and soldering processes. Each inspection apparatus can generate an X-ray transmission image of the substrate. Each inspection apparatus on the downstream side inputs an image from another inspection apparatus on the upstream side and generates a differential image of the inputted image and an X-ray transmission image of the same substrate generated by itself after the production process associated with itself is carried out. The differential image thus generated is used for inspecting the substrate such that the effect of the associated production process can be more accurately inspected.

Abstract: A device (1) for computer tomography, which is set up for x-ray scatter correction, features an evaluation unit (17) which evaluates values stored as a table in a data memory for x-ray scatter correction, which have been determined in advance with the aid of a Monte Carlo simulation which take account of interactions of the photons with the object (2) to be investigated.

Abstract: A recording arrangement of an x-ray system comprises an x-ray source and an x-ray detector. Adjustment parameters can be manually supplied to the recording arrangement by an operator of the x-ray system, so that the x-ray source emits x-rays according to the manually given adjustment parameters and the x-ray detector accordingly acquires a sequence of images of an object. The manually supplied adjustment parameters can be automatically acquired by an acquisition device and stored in a remanent memory at least temporarily assigned to the acquisition device and remain stored after the completion of the acquisition of the sequence independently of a further operation of the x-ray system. The stored adjustment parameters can be retrieved from the remanent memory by the operator and supplied again to the recording arrangement so that a further sequence of images can be acquired according to the retrieved adjustment parameters.

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: An X-ray image diagnostic apparatus including an X-ray source, an X-ray flat panel detector, an image processor, and an image display. The image processor includes a storage for storing plural sets of residual image data, acquired in advance from X-ray images in X-ray image acquisition modes from the X-ray flat panel detector before an actual measurement, in correspondence with the X-ray image acquisition modes, and a residual image corrector for correcting residual image data contained in an X-ray image in the actual measurement from the X-ray flat panel detector, using the residual image data stored in the storage.

Abstract: An X-ray diagnosis apparatus and method for creating image data, wherein a plurality of sets of reference image data is created based on projection data obtained from a plurality of imaging directions to the object after an contrast agent is injected to an object, fluoroscopic image data are created based on projection data obtained from a desired imaging direction to the object, and fluoroscopic roadmap image data are created based on the fluoroscopic image data and reference image data whose imaging direction corresponds to the imaging direction of the fluoroscopic image data.

Abstract: This invention provides novel cadmium tungstate scintillator materials that show improved radiation hardness. In particular, it was discovered that doping of cadmium tungstate (CdWO4) with trivalent metal ions or monovalent metal ions is particularly effective in improving radiation hardness of the scintillator material.

Abstract: Methods and systems for controlling exposure for medical imaging devices is provided. The method includes varying the exposure level of X-rays within an X-ray imaging system to generate a plurality of images having different exposure levels and combining the plurality of images in an additive process to form a single X-ray image.

Abstract: An X-ray angiography apparatus includes a C-arm, a support mechanism which rotatably supports the C-arm, a rotation driving unit which drives rotation of the C-arm, an X-ray tube mounted on the C-arm, an X-ray detector mounted on the C-arm in a direction to face the X-ray tube, and a rotation control unit which controls the X-ray detector and the rotation driving unit to make the angle sampling pitch of contrast images become larger than that of mask images.

Abstract: An X-ray diagnostic apparatus includes an image generating unit which generates a plurality of X-ray images by repeatedly radiographing a subject before and after injection of a contrast medium, a region detecting unit which detects a non-contrast region from a plurality of mask images before injection of the contrast medium and a plurality of contrast images after injection of the contrast medium, which constitute the plurality of X-ray images, a mask selecting unit which separately selects one mask image with respect to each of the contrast images on the basis of a correlation between the contrast image and the mask image upon localization to the non-contrast region, and a subtraction processing unit which generates a subtraction image by performing subtraction between the contrast image and the selected mask image.

Abstract: Radiation image signals representing radiation images of a single object, which have been formed with several kinds of radiation having different energy distributions, are obtained. Energy subtraction processing is performed in accordance with predetermined parameters and on radiation image signal components, which represent corresponding pixels in the radiation images, and a desired tissue pattern embedded in the radiation images is thereby extracted or enhanced. A parameter, which concerns an image density shift quantity over an entire area of an energy subtraction image obtained from the energy subtraction processing, is calculated in accordance with the other parameters.

Abstract: An x-ray system for use with image-guided medical procedures is programmed to move in a first scan path to acquire cone beam attenuation data from which a three-dimensional digital subtraction angiogram of selected vasculature is reconstructed. The x-ray system is also programmed to move in a second scan path to acquire a series of tomosynthesis images during the inflow of a contrast agent into the selected vasculature. Parametric images are produced from information in the tomosynthesis images which indicate blood perfusion physiology of the tissues served by the vasculature.

Abstract: The invention concerns a method for a dentomaxillofacial X-ray imaging. It is provided an X-ray beam (15) having a first radiation spectrum and a flat cross-sectional form towards a predetermined dentomaxillofacial area (Q) of a patient (P), and an image receptor (8) in a carrier (7) positioned outside the head of a patient. During a first exposure said X-ray beam and said carrier with the inserted image receptor are moved in a first rotational or linear direction, whereupon a first image of the dentomaxillofacial area is created on said image receptor. Then it is provided an X-ray beam having a second radiation spectrum and the flat cross-sectional form. During a second exposure said X-ray beam and said carrier with the same image receptor are moved in a second rotational or linear direction that is e.g. opposite to said first direction, whereupon a second image of the same dentomaxillofacial area is created on said image receptor.

Abstract: A method for performing scattered radiation correction. The position of a collimator and the width of a slit are adjusted so that direct radiation will fall on one of a plurality of arrays of detectors. A predetermined phantom is scanned. The scan is performed relative to each of the plurality of arrays of detectors. Based on data detected during each scan, scattered radiation correction data is produced. The produced scattered radiation correction data is used to correct projection data acquired by scanning a subject.

Abstract: In an operating method for a medical installation, in particular an x-ray installation. In activation state of the medical installation, a control and evaluation device determines, upon input of a control command, a useful image of a subject. For this purpose, the control and evaluation device receives raw image of the subject acquired by a detector in a first detector mode, and determines the useful image therefrom on the basis of correction data. In a waiting state of the medical installation, the control and evaluation device updates the correction data for the first detector mode repeatedly after the expiration of a basic time interval since the last driving of the detector. For this purpose, the control and evaluation device receives raw data acquired by the detector and uses it to update the correction data.

Abstract: Disclosed is an image intensifier camera capable of rotating an image imaged therein. An image intensifier camera in accordance with the present invention includes an image inverse prism provided between a front lens group and an aperture stop in a fluoroscopic image imaging optical system, and an image pickup device in the intensifier camera of the present invention contains an electric circuit for converting a mirror image back to an original image therein. In accordance with the present invention, the image imaged in the image pickup device may be rotated by a rotatable image inverse prism, so that the image intensifier camera of the present invention has a simple structure, a small volume, high image resolution, and high stability of image quality.

Abstract: A method for processing x-ray images includes collecting a first x-ray image and a second x-ray image, determining a composite image based on the first and second x-ray images, collecting a third x-ray image, and adjusting the third x-ray image based on the composite image. Another method of processing x-ray images includes obtaining a first x-ray image, obtaining a second x-ray image, and determining a composite image based on at least a portion of the first and second x-ray images.

Abstract: A method for operating an X-ray analysis device is characterized by the following steps: a) recording a first data set in a first relative spatial position of a source, an object and a detector; b) displacement and/or rotation of the detector in the detector plane relative to the source and the object, whereby the relative position of source and object is not changed; c) recording a second data set In the position displaced according to step b); and d) superposition of the recorded data sets to form an overall data set, wherein the pixels of the recorded data sets are combined corresponding to their actual relative position with respect to the source and object.

Abstract: In a method for automatic adjustment of a diaphragm in an x-ray system, the diaphragm having a number of adjustable diaphragm elements for a subsequent x-ray exposure of an examination subject, the individual diaphragm elements are respectively positioned such that, considered in a projection lying in a detector plane, abut the contours of the acquisition subject or are situated at a small distance therefrom for this positioning, first a subject localization exposure is generated with a low radiation dose with an open diaphragm. This subject localization exposure is analyzed to determine contours of the exposure subject. The positions of the diaphragm elements are calculated using the determined contours, and then the diaphragm elements are moved into the calculated positions.

Abstract: A radiological imaging apparatus and method corrects fixed pattern noise (FPN) generated within the apparatus and suppresses increases in random noise attendant upon FPN correction to provide radiological imaging having improved reliability and image quality. The apparatus has a signal processing circuit that digitizes analog output from a read-out circuit, four FPN memories for storing four dark outputs, a light memory for storing a light output after X-ray exposure of a subject, a CPU for controlling the signal processing circuit as well as FPN and light memories, and a shift resister 7 controlled by the CPU. The method involves averaging multiple dark outputs and subtracting,the FPN data average so obtained from the light output which includes the X-ray imaged to enhance picture quality. Since the FPN correction uses FPN data that has been averaged over multiple dark outputs, the method also suppresses random noise generated by the FPN correction for enhanced imaging accuracy.

Abstract: An x-ray system is controlled to obtain a view of an area of a patient that is larger than a field of view of an x-ray detector. Individual images are obtained of portions of the area of the subject that, when combined, can be used to get a view of the area of the subject. Positions of individual images are determined. The positions are preferably calculated to avoid placing structures that tend to move or that are dose sensitive in an area of overlap of the individual images. Also, the positions are preferably calculated to reduce overall exposure to a subject, especially by reducing unnecessary double exposure.

Abstract: Described herein is a portable, self-contained, electronic radioscopic imaging system that utilizes a multiple camera imager and advanced processing techniques to image suspicious containers. An X-ray sensor or imager utilizes a scintillating screen that produces flashes of light when impinged by an X-ray in combination with at least one camera, or the like, to produce an integrated signal that represents the sum of a prescribed number of flashes of radiation that pass through the object in a given pixel area. A self-contained display and control unit utilizes digital signal processing in order to display to an operator the full dynamic range and resolution of an image-capturing novel sensor utilized within the imager.

Abstract: A technique for compensating for a retained image includes employing bimodal readout of alternating light and dark images. The bimodal readout technique results from reading either light or dark frames more rapidly, allowing additional time to be allocated to the X-ray exposures occurring prior to the light frames or to the other reading operation. The bimodal readout may be accomplished by a binning procedure by which scan lines are binned and read, typically during dark frame readout. The images acquired from reading the dark frames may then be used to compensate for a retained image artifacts present in the image derived from light frames.

Abstract: An offset data calculator has a normal offset data calculation function for calculating offset data based on data obtained from an X-ray flat panel detector while no X-ray is incident in each of the modes, i.e., an entire region fluoroscopy mode, a partial region fluoroscopy mode, imaging mode, etc. and storing the data in an offset data storage device, and additionally has a function for updating, upon calculation of new offset data in any of the modes, another mode offset data stored in the offset data storage device based on the new offset data calculated. Thus, from offset data acquired in any of the plurality of modes, it is possible to obtain the latest offset data in all the modes.

Abstract: An apparatus including but not limited to a charge-coupled device(CCD)-array sensor positioning mechanism, the positioning mechanism structured to position a CCD-array sensor to capture a first target area; and the CCD-array sensor positioning mechanism further structured to position the CCD-array sensor to capture a second target area proximate to the first target area, the first and second target areas spatially related such that a first radiographic image recorded at the first target area may be combined with a second radiographic image recorded at the second target area to form a composite radiographic image substantially analogous to a single radiographic image of an aggregate target area covered by the first and second target areas.

Abstract: Method for an x-ray arrangement for compensation of scattered radiation and x-ray apparatus The invention concerns a method for an x-ray arrangement comprising two x-ray systems (1, 2) for compensation of scattered radiation. In addition, the invention concerns an x-ray apparatus with two x-ray systems (1, 2) which respectively comprise an x-ray source (4, 5) and an x-ray detector (5, 7). An x-ray scattered radiation image based on the x-ray radiation (11) scattered on a subject (P) is acquired for at least one of the two x-ray systems (1, 2), given a definite positioning of the x-ray systems (1, 2) relative to one another. The acquired x-ray scattered radiation image is saved and used for subtraction from an x-ray image acquired with the x-ray system (1, 2) in order to compensate for the influence of the scattered radiation originating from the other x-ray system (1, 2) and to achieve an improved image quality.

Abstract: A diagnostic X-ray system includes an imaging system that generates image data sets from shots by subjecting a patient to X-ray exposure, a supporting mechanism that supports the imaging system movably with respect to the patient, a system controller that controls the imaging system and the supporting mechanism in such a manner that shots are repeated at each of a plurality of shot positions set discretely along the body axis of the patient, and an image processing apparatus that generates another image data set covering a range wider than the field of view of the imaging system from the image data sets.

Abstract: A device for use in image pasting is described. The device includes a digital x-ray detector capable of automatic digital imaging without the use of an image intensifier; the detector preferably being a flat-panel detector. Additionally, an image pasting system using a solid-state detector is described. The system can connect the detected images to a display via a network (such as a WAN, a LAN, or the internet). Further, an image geometry measurement device for use in pasting x-ray images is disclosed. The geometry measurement device helps determine the relative position of two images to be used in image pasting. This information can be used alone, or in connection with an image pasting algorithm. Still further, methods of forming composite images are disclosed using a flat-panel detector and using the geometry of the images. The disclosed devices and systems can be integrated with other digital image pasting technology.

Abstract: In a method for producing an x-ray image, during two time-separated examination dates, a first x-ray image and a second x-ray image of a body region of an organism are respectively generated. The x-ray image datasets associated with the two x-ray images are subtracted from one another, so that a further image dataset ensues. Subsequently, the image information of the image dataset is emphasized and superimposed with the image information of the second x-ray image dataset.

Abstract: A method for plaque characterization. The method comprises obtaining a first set of image data created in response to a first x-ray energy level and including a plurality of pixel elements. Each of the first pixel elements corresponds to a unique location in an object being scanned. The method further comprises obtaining a second set of image data created in response to a second x-ray energy level and including a plurality of second pixel elements. Each of the second pixel elements corresponds to one of the first pixel elements and the second x-ray energy level is higher than the first x-ray energy level. The method also comprises calculating a third set of image data in response to the first set of image data and the second set of image data. The calculating includes subtracting each second pixel element from the corresponding first pixel element.

Abstract: A method is provided to automatically determine a structure cancelled image in a dual energy decomposition system. A high energy and a low energy level image of internal anatomy formed of at least first and second types of structure are acquired. A characteristic mask is computed using a gradient mask and a localization mask. A first cancellation parameter is evaluated against the characteristic mask, and a second cancellation parameter is computed based upon the first cancellation parameter. The first or second cancellation parameter is selected from a range in a look-up table determined by an effective kVp used to acquire the high level image and an effective kVp used to acquire the low level image. An image of soft structure and an image of hard structure are obtained from the first and second energy level images according to a cancellation equation using the first and second cancellation parameters.

Abstract: A system for x-ray fluoroscopic imaging of bodily tissue in which a scintillation screen and a charge coupled device (CCD) is used to accurately image selected tissue. 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 re-radiates a spatial intensity pattern corresponding to the image, the pattern being detected by the CCD sensor. In a preferred embodiment the imager uses four 8×8-cm three-side buttable CCDs coupled to a CsI:T1 scintillator by straight (non-tapering) fiberoptics and tiled to achieve a field of view (FOV) of 16×16-cm at the image plane. Larger FOVs can be achieved by tiling more CCDs in a similar manner. The imaging system can be operated in a plurality of pixel pitch modes such as 78, 156 or 234-?m pixel pitch modes. The CCD sensor may also provide multi-resolution imaging.

Abstract: An x-ray system is controlled to obtain a view of an area of a patient that is larger than a field of view of an x-ray detector. Individual images are obtained of portions of the area of the subject that, when combined, can be used to get a view of the area of the subject. Positions of individual images are determined. The positions are preferably calculated to avoid placing structures that tend to move or that are dose sensitive in an area of overlap of the individual images. Also, the positions are preferably calculated to reduce overall exposure to a subject, especially by reducing unnecessary double exposure.

Abstract: An apparatus and method for inspecting parts. The apparatus includes an x-ray source for illuminating a part from a plurality of locations with respect to the part and an imaging detector for forming a plurality of measured x-ray images of the part, one such measured x-ray image corresponding to each of the illumination locations. A controller compares each of the measured x-ray images with a corresponding calibration image. The controller provides a defective part indication if one of the measured x-ray images differs from the corresponding calibration image by more than a threshold value in part of the measured x-ray image. The controller localizes defects on the part by comparing two or more of the measured x-ray images with two or more corresponding calibration images. The calibration images can be constructed from measured images of defect free parts.

Abstract: An apparatus and method comprises an acquisition of a first series of projected two-dimensional mask images of the object obtained for different positions of a camera around the object; an acquisition of a second series of opacified projected two-dimensional images of the object obtained at the same positions of the camera around the object; a phase of elaboration of a third series of subtracted projected two-dimensional images respectively obtained from the first and second series of images; a reconstruction of a three-dimensional subtracted image from the third series of images and from an analytical algorithm of image reconstruction; a reconstruction of a three-dimensional mask image from the first series of images and from an analytical algorithm of image reconstruction; a phase of identification of defects in the three-dimensional mask image; and elimination of the corresponding voxels in the three-dimensional subtracted image.

Abstract: A radiation imaging apparatus includes a radiation detecting unit and an image-display controlling unit. The radiation detecting unit has radiation detectors, arranged in a two-dimensional array, for detecting radiation transmitted through an object as electrical signals. The image-display controlling unit radiographs radiation images of the object, detected as the electrical signals by the radiation detecting unit, at a predetermined frame rate as continuous images in a plurality of frames and displays a processed image given by subtracting an m-th image from an (m+1)-th image in synchronous with either the m-th image or the (m+1)-th image that does not undergo the subtraction in a display, where m is a natural number.

Abstract: A method of processing dual energy images. The method includes obtaining a first image generated at a first energy level and obtaining a second image generated at a second energy level different than the first energy level. The first and second images are pre-processed and decomposed to form a raw soft-tissue image and a raw bone image. The raw soft-tissue image is post-processed to form a processed soft-tissue image and the raw bone image is post-processed to form a processed bone image. The processed soft-tissue image and the processed bone image are then display processed.

Abstract: Methods and apparatus are provided in a diagnostic X-ray system for reducing signal conversion time for a solid-state detector panel of the X-ray system in order to increase frame rate. A measurement of a set of induced signal offsets caused by time varying charge retention associated with the detector panel is performed during a phantom time segment prior to normal signal readout of the detector panel for a current image frame. A set of adjustment values is generated in response to the set of induced signal offsets. Subsets of signal values of the detector panel are read out to a pre-determined signal dynamic range as part of normal signal readout of the detector panel in response to the set of adjustment values, thus generating a set of normalized detector signals.

Abstract: An angiography apparatus includes a bed having a top on which a patient to be examined lies down, a substantially C-shaped C-arm, and an X-ray generating means and X-ray detection means which are arranged to oppose one end and the other end of the C-arm. According to this angiography apparatus, in chasing and imaging the flow of a contrast medium injected into the patient, the C-arm 3 can be arbitrarily moved in a direction. In addition, according to the angiography apparatus of this invention, by displaying a simulated image of the flow of the contrast medium, an operator can simulate contrast medium chase imaging before actual contrast medium chase imaging.

Abstract: A temporal image processing system includes a temporal processing controller receiving at least two images temporally spaced apart, from a scanning unit. The temporal processing controller includes a registration module, which registers a region of interest within the images and generates therefrom a registration signal. The temporal processing controller further includes a confidence module receiving the registration signal and generating a confidence map therefrom. The confidence map enhances contrast of temporal changes in the object relative to a contrast due to misregistrations.

Abstract: When X -ray irradiation is performed with many X doses and the fall of temporary sensibility or the rise of the temporary offset arises, it is the X-ray diagnostic equipment which computes the correction by sensitiveness multiplier based on the sensibility characteristic or offset characteristic of each pixel, and rectifies data. In this X-ray diagnostic equipment, the correction by sensitiveness multiplier for data correction is determined based on the signal value detected last time at least. In integrating this correction by sensitiveness value from each pixel to the output signal, the influence by the fall of temporary sensibility or the rise of the temporary offset is removed.

Abstract: A method for obtaining data including scanning an object using a multi-energy computed tomography (MECT) system to obtain data to generate an anatomical image, and decomposing the obtained data to generate a first density image representative of bone material and a second density image representative of soft-tissue. The method further includes segmenting at least one of the first density image and the second density image, and volume rendering the second density image.

Abstract: A device for use in image pasting is described. The device includes a digital x-ray detector capable of automatic digital imaging without the use of an image intensifier; the detector preferably being a flat-panel detector. Additionally, an image pasting system using a solid-state detector is described. The system can connect the detected images to a display via a network (such as a WAN, a LAN, or the internet). Further, an image geometry measurement device for use in pasting x-ray images is disclosed. The geometry measurement device helps determine the relative position of two images to be used in image pasting. This information can be used alone, or in connection with an image pasting algorithm. Still further, methods of forming composite images are disclosed using a flat-panel detector and using the geometry of the images. The disclosed devices and systems can be integrated with other digital image pasting technology.