Abstract: Disclosed herein are an X-ray imaging apparatus and a method for controlling the same. The X-ray imaging apparatus includes an X-ray generator configured to radiate first-energy X-rays toward an object, an X-ray detector configured to detect the first-energy X-rays which propagate through the object, an image processor configured to generate a first object image which correspond to the detected first-energy X-rays and to estimate a second object image which corresponds to second-energy X-rays based on the generated first object image, and a controller configured to control the image processor to repeatedly estimate the second object image by controlling the X-ray generator to repeatedly radiate the first-energy X-rays toward the object.

Abstract: An apparatus aids operation of an interventional x-ray imager during image acquisition, where the X-ray imager is configured to vary X-ray dosages depending on differences in X-ray attenuation levels across an object of interest to be imaged. The X-ray imager is further configured to assume any one of a plurality of imaging geometry positions when acquiring an image. An indication, visual, acoustic or haptic, to the operator of the X-ray imager is provided on the incurred change in X-ray dosage when changing from a current projection view to an updated projection view, while a given constant image quality is maintained throughout the different views.

Abstract: An x-ray tube includes a target on which electrons impinge to form a diverging x-ray beam. The target has a surface formed from first and second target materials, each tailored to emit a respective x-ray energy profile. A first x-ray optic may be provided for directing the beam toward the sample spot, the first x-ray optic monochromating the diverging x-ray beam to a first energy from the energy emitted by the first target material; and a second x-ray optic may be provided, for directing the beam toward the sample spot, the second x-ray optic monochromating the diverging x-ray beam to a second energy from the energy emitted by the second target material. Fluorescence from the sample spot induced by the first and second monochromated energies is used to measure the concentration of at least one element in the sample, or separately measure elements in a coating and underlying substrate.

Abstract: A non-invasive method distinguishes between two types of micro-calcification by x-ray imaging in mammography. Two major types of micro-calcifications are found and confirmed by histopathology and they are correlated to benign and malignant breast lesions. Distinguishing between them non-invasively will significantly improve early breast cancer diagnosis. This is based on the fact that these two types of micro-calcifications show opposite absorption and small-angle scattering signals in x-ray imaging. The imaging system, which can record these two signals of the breast tissue simultaneously for instance, an x-ray grating interferometer, can be used to uniquely determine the micro-calcification type. This is expected to be used in mammography to improve early breast cancer diagnosis, increase diagnosis accuracy and decrease the biopsy rate.

Abstract: Disclosed is an X-ray imaging apparatus, which includes a plurality of X-ray generation modules configured to emit X-rays to a subject, the X-ray generation modules being configured to move independently of one another, an X-ray detector configured to detect a plurality of X-rays emitted from the plurality of X-ray generation modules and which have passed through the subject, and an image processor configured to acquire a plurality of X-ray images from the plurality of detected X-rays.

Abstract: An x-ray analysis system having an x-ray engine with an x-ray source for producing an x-ray excitation beam directed toward an x-ray analysis focal area; a sample chamber for presenting a sample stream to the x-ray analysis focal area, the analysis focal area disposed within a sample analysis area defined within the chamber; an x-ray detection path for collecting secondary x-rays and directing the x-rays toward a detector; an x-ray transparent barrier on a wall of the chamber through which the x-rays pass; and a blocking structure partially blocking the sample analysis area, for creating sample stream turbulence in the sample analysis area and over the barrier. The blocking structure may be disposed asymmetrically about a central axis of the x-ray analysis focal area and/or the sample analysis area; and may be a rounded pin. A heating element may be used to heat the sample stream for improving flow.

Abstract: An X-ray generator may comprise: an electron emission device comprising a plurality of electron emission units configured to emit electrons; an X-ray emission device configured to emit X-rays due to the electrons emitted from the electron emission device; and/or a parallel light extraction member configured to extract X-rays having directivity from among the X-rays emitted from the X-ray emission device and to allow the extracted X-rays having directivity to pass through the parallel light extraction member.

Abstract: A system and method for digital x-ray imaging. The method includes emitting a first and second collimated x-ray beam from an x-ray source disposed in a first and second position, respectively. The first and second collimated x-ray beam is directed onto an identified region of interest (ROI) wherein a first and second ROI image is captured, respectively, when the x-ray source is disposed in the first and second position, respectively. The first and second ROI images are processed to extract features from each of the first and second ROI images. The extracted features are analyzed, and an indicator of a disease is generated responsive to the extracted features. The indicator can be stored, displayed, or transmitted. The first and second x-ray sources can be the same or different x-ray sources.

Abstract: The present invention relates to systems and methods for reducing motion artifacts in x-ray sampling circuits. The detector system output is sampled at a rate than the x-ray exposure rate to reduce blurring associated with motion of the detector and/or object being scanned.

Abstract: An X-ray diagnostic apparatus according to an embodiment includes a support mechanism, bed, dosimeter, dose decision unit, dose distribution generation unit and display unit. The support mechanism movably supports an X-ray tube generating X-rays over a plurality of times in a predetermined period and an X-ray detector detecting X-rays transmitted through an object. The bed includes a top on which the object is placed. The dosimeter measures a total dose over the period. The dose decision unit decides doses respectively corresponding to times of generation of the X-rays in the period based on the total dose and an X-ray irradiation condition. The dose distribution generation unit generates a dose distribution based on a position of the support mechanism, a position of the bed, and the doses. The display unit displays the dose distribution.

Abstract: Disclosed is an X-ray photographing apparatus comprising: an X-ray generator for generating X-rays; an X-ray detector for detecting the X-rays discharged from the X-ray generator; and a collimator for permitting only a portion of the X-rays to pass through and blocking the rest X-rays, wherein the apparatus further comprising a support means for supporting the X-rays generator and the X-ray detector and varying heights of the X-ray generator and the X-ray detector, wherein the X-ray generator and the X-ray detector are arranged facing each other at respective left and right sides with respect to the support means for supporting the X-ray generator and the X-ray detector so as to achieve a weight balance, and the support means has an X-ray path through which the X-rays generated by the X-ray generator pass without interference.

Abstract: The invention generally relates to generating digital dental panoramic images from multiple frame images acquired during a dental panoramic imaging scan about a patient's head. This generating includes using information of location and orientation of the x-ray beam and the x-ray detector at times when taking the frames in the procedure of summing information of the frames.

Abstract: A rotating unit of a medical imaging device has a hydrostatic slide bearing and an integrated coolant conduit. The rotating unit includes at least one stator, at least one rotor that is borne such that it can rotate relative to the stator, and at least one portion of a circulation system for the circulation of a bearing medium, so the rotor is borne hydrostatically floating by the bearing medium. The at least one portion of the circulation system for the circulation of the bearing medium also has at least one stator-side opening and one rotor-side opening to the hydrostatic slide bearing. The rotating unit additionally has at least one at least single-channel rotary joint mounted between the rotor and the stator. The rotating unit is designed such that the bearing medium can be supplied through the stator-side opening into the hydrostatic slide bearing and the bearing medium can be supplied again through the rotor-side opening and the rotary joint into the circulation system again.

Abstract: A wireless radiation system that includes: a generator including a first wireless communication module; and a radiation detector including a digital screen and a second wireless communication module. The radiation detector is configured to display a captured radiation image on the digital screen and to transmit the captured radiation image, using the second wireless communication module, to a server. The first and second wireless communication modules are configured to wirelessly synchronize a radiation generation by the radiation generator and an exposure to the radiation by the radiation detector.

Abstract: In a mammography apparatus, a deflection of an x-ray source aligned on a radiation detector is predetermined depending on the size of a breast compressed in the compression unit and/or the density of the breast tissue. Given an increasing deflection on an arc-shaped trajectory of the x-ray source, the compression of the breast is reduced at least once so that the path of the x-rays through the breast stays within a predetermined path length, starting from a first compression in a first x-ray acquisition.

Abstract: A medical imaging system is provided that includes a first gantry having a plurality of first detector units coupled within a bore of the first gantry such that the first detector units form a first field of view (FOV) of the first gantry. The first detector units are configured to acquire SPECT data. Further, the medical imaging system includes a second gantry having a plurality of second detector units coupled within a bore of the second gantry such that the second detector units form a second FOV of the second gantry. The second detector units are configured to acquire x-ray CT data. The second gantry is positioned adjacent to the first gantry. The medical imaging system also includes a patient table movable through the bores and a controller unit configured to control a rotation speed of the first detector units and the second detector units around the examination axis.

Abstract: This invention relates to an apparatus producing distributed X-ray, and in particular to a cathode control multi-cathode distributed X-ray apparatus, which produces X-ray that changes focal position in a predetermined order by arranging multiple independent hot cathodes and controlling cathodes in an X-ray source device, and a CT device having said X-ray apparatus.

Abstract: Borehole tools and methods for analyzing earth formations are disclosed herein. An example borehole tool disclosed herein includes an RF particle accelerator. The particle accelerator includes an accelerator waveguide for accelerating electrons. The borehole tool also includes a power amplification circuit that is based on a wide bandgap semiconductor material, such as a combination of gallium nitride (GaN) and aluminum gallium nitride (AlGaN). The power amplification circuit amplifies an initial input RF signal and provides a driving RF output signal to drive acceleration of the electrons within the accelerator waveguide.

Abstract: The present invention pertains to a method and apparatus for contactless control of a medical imaging system. A medical image can be acquired and displayed, and an aspect of the image can be altered based on a tracked position of a user body part. The user can be sensed by a sensing device, and the user body part tracked by a tracking unit in a first processing unit. A second processing unit can be coupled to the first processing unit and can have a control unit for controlling the medical imaging system.

Abstract: A method and system for three dimensional crystallographic grain orientation mapping illuminates a polycrystalline sample with a broadband x-ray beam derived from a laboratory x-ray source, detects, on one or more x-ray detectors, diffracted beams from the sample, and processes data from said diffracted beams with the sample in different rotation positions to generate three dimensional reconstructions of grain orientation, position, and/or 3-D volume. A specific, cone beam, geometry leverages the fact that for a point x-ray source with a divergent beam on reflection of an extended crystal grain diffracts x-rays such that they are focused in the diffraction plane direction.