Abstract: An apparatus includes a plurality of stacked flat Bragg diffractors having at least a first flat Bragg diffractor and a second flat Bragg diffractor. The first and second flat Bragg diffractors are positioned sequentially along an x-ray propagation axis of an x-ray beam. The x-ray beam includes x-rays and has an angular beam divergence less than 30 mrad in at least one direction.

Abstract: A method of planning radiation treatment for a patient includes identifying a region of interest of the patient to be treated with radiation and determining a simulated treatment plan for the region of interest based on a statistical analysis between one or more metrics of the identified region of interest and a previously determined predictive dynamics database that includes information regarding the one or more metrics for corresponding regions of interest for a population of patients. The method further includes characterizing the simulated treatment plan with a FLASH Index that compares an ideal FLASH radiation treatment plan to the simulated treatment plan.

Abstract: Systems and methods for determining an image type are disclosed. A user interface includes a visual representation of a breast and a visual representation of a medical imaging system. The visual representation of the medical imaging system includes a visual representation of a detector and either a source or a compression paddle. The visual representation of the medical imaging system may be rotatable and positionable relative to the visual representation of the breast. Based on the relative position and orientation of the visual representation of the medical imaging system relative to the visual representation of the breast, an image type is determined. The image type may be displayed at the user interface.

Abstract: In a gantry for a computed tomography device, a rotary frame is arranged on the tilt frame so that the rotary frame rotates relative to the tilt frame about an axis of rotation. The tilt frame is arranged on the support frame so that the tilt frame tilts about a tilt axis relative to the support frame, such that a tilt angle of the tilt frame relative to the support frame is changeable by a tilting movement of the tilt frame relative to the support frame about the tilt axis. The proximity switch has a proximity sensor and a reference mark, which interacts with the proximity sensor. The proximity switch is also coupled to the support frame and to the tilt frame such that the proximity switch is configured to react to an approach of the tilt angle to a reference angle.

Abstract: A remote operation control system includes a simulation device, a target device and a control device. The control device is coupled to the simulation device and the target device, and is configured to determine first position data and first attitude data of the simulation device when the simulation device moves to a set state, and control the target device to move to a same state as the set state based on the first position data and the first attitude data.

Abstract: Systems and methods for reducing X-ray scatter during breast imaging, and more specifically during tomosynthesis imaging. In one embodiment, an anti-scatter grid having a plurality of septa may be configured to be positioned relative to an X-ray imaging device such that each septum of the plurality of septa extends along a direction substantially parallel to a coronal plane of a subject during imaging of the subject using the X-ray imaging device. The X-ray imaging device may be operable in a tomosynthesis mode for imaging of a breast of the subject and may include the anti-scatter grid disposed between a breast platform and the X-ray detector. The anti-scatter grid may be configured to move in a direction substantially parallel to a sagittal plane of the subject during tomosynthesis imaging.

Abstract: A system and method for adapting treatment plan are provided. The method may include: obtaining a planning image of a region of interest relating to a first treatment fraction of a first treatment plan; obtaining a first image of the region of interest relating to a first scan of the region of interest with a first dose level; comparing the planning image with the first image to generate a first comparison result; determining whether the first comparison result satisfies a first replanning condition; causing, in response to a determination that the first comparison result satisfies the first replanning condition, one or more scanners to perform a second scan with a second dose level to provide a second image; and generating a second treatment plan according to the second image, wherein the second dose level is higher than the first dose level.

Abstract: A radiation therapy apparatus according to an embodiment includes a radiation generator and processing circuitry. The radiation generator is configured to emit radiation having an ultrahigh dose rate. The processing circuitry is configured to measure a dose of the radiation emitted from the radiation generator over a period of time. The processing circuitry is configured to calculate an accumulated dose and a dose rate of the radiation emitted from the radiation generator, on a basis of the dose of the radiation measured over the period of time. The processing circuitry is configured to control the radiation generator, on a basis of the dose of the accumulated dose and the dose rate.

Abstract: Disclosed herein is an x-ray backscatter apparatus for non-destructive inspection of a part. The x-ray backscatter apparatus comprises an x-ray source and an x-ray collimator. The x-ray collimator comprises a plurality of emission apertures and a detection aperture. The x-ray backscatter apparatus further comprises an x-ray intensity sensor that is fixed to the x-ray collimator over the detection aperture such that any portion of an uncollimated x-ray emission collimated into the detection aperture is detected by the x-ray intensity sensor. The x-ray backscatter apparatus additionally comprises an emission alignment adjuster that is operable to adjust a position of the uncollimated x-ray emission relative to the plurality of emission apertures and the detection aperture in response to a position, relative to the detection aperture, of a peak intensity of the uncollimated x-ray emission passing into the detection aperture, detected by the x-ray intensity sensor.

Abstract: A component residual stress testing platform based on neutron diffraction and experimental method thereof are provided, the testing platform includes a component support, a rotating mainshaft, a first thrust cylindrical roller bearing, a first cylindrical roller bearing, a bearing spacing sleeve, a second cylindrical roller bearing, a sleeve, and a first fixed baffle. The rotating mainshaft is disposed on the component support. The first thrust cylindrical roller bearing, the first cylindrical roller bearing, the bearing spacing sleeve and the second cylindrical roller bearing are sleeved on the rotating mainshaft, the sleeve is sleeved outside the first cylindrical roller bearing, the bearing spacing sleeve and the second cylindrical roller bearing, a component to be tested is sleeved on the sleeve. The testing platform can support, move, tilt and rotate the component to be tested in a process of a residual stress testing.

Abstract: An X-ray fluorescence analyzer is provided inside an analysis chamber covered with a housing with: an X-ray tube; an analyzing crystal for spectrally dispersing X-ray fluorescence emitted from a sample; an X-ray detector for detecting the X-ray fluorescence spectrally dispersed by the analyzing crystal; a warm air generator for generating warm air to maintain a temperature of the analyzing crystal at a target temperature; and a Peltier element for cooling the X-ray detector.

Abstract: A breast support platform for an x-ray imaging system includes a housing having a compression plate and a front wall, and a heating system disposed at least partially within the housing. The heating system is configured to heat at least a portion of the compression plate, at least a portion of the front wall, or at least a portion of the compression plate and the front wall. In an example, the heating system includes a transparent conducting film coupled to an inner surface of the housing. In another example, the heating system includes a blower disposed at least partially within the housing, and the blower is configured to channel hot air across an inner surface of the housing.

Abstract: Methods and systems of measurement for blown film lines are provided. The sensing system includes a terahertz (THz) sensor positioned adjacent to a film bubble extruded from a blown film die, and a sensor support configured to guide the THz sensor around the circumference of the film bubble to measure its film thickness.

Abstract: An example method for a radiation therapy system that includes a movable couch to perform radiation therapy has been disclosed. One method includes based on the X-ray images of an anatomical region of the patient that includes a target volume, reconstructing a digital volume of the anatomical region and based on a user input indicating a location of a patient origin in the digital volume, determining one or more shift values for repositioning the patient origin at an isocenter of the radiation therapy system with respect to a coordinate system. The method also includes obtaining a treatment plan that is based on the location of the patient origin and is associated with the target volume, based on the treatment plan, repositioning the movable couch so that the patient origin is disposed at the isocenter, and while the patient origin is disposed at the isocenter, directing a treatment beam to the patient origin in accordance with the treatment plan associated with the target volume.

Abstract: To measure a pulse height of an X-ray signal at high speed and with high precision even for high count rate X-ray measurement regardless of the type of an X-ray detector and a circuit configuration of a preamplifier, provided is an X-ray spectrometer including: a learning unit which acquires a part of a stepped wave including a rise portion through use of incident time, and generates a trained model which has learned a correlation between a acquired part and a pulse height through use of training data including a plurality of combinations of the acquired part and the pulse height; and a pulse height predictor which acquires a part of the stepped wave from the newly converted stepped wave through use of the incident time, and calculates a predicted pulse height from the acquired part of the stepped wave and the trained model.

Abstract: Methods and systems are provided for an imaging system including a gantry with a rotatable section including an integrated power source. The integrated power source is configured to provide power to an x-ray tube and other components coupled to the rotatable section and is configured to rotate with the rotatable section. The integrated power source is configured to provide a counter-weight to other components coupled to the rotatable section to increase a rotational balance of the gantry.

Abstract: A device for measuring short-wavelength characteristic X-ray diffraction based on array detection, and a measurement and analysis method based on the device are provided. An array detector of the device only detects and receives a diffraction ray which is diffracted by a material of a to-be-measured part inside a sample and passes through a through hole of a receiving collimator, and rays passing through a positioning hole. The to-be-measured part inside the sample is placed at the center of the diffractometer circle of the device. The method is performed with the device. With the present disclosure, a diffraction pattern of a part inside the sample with a centimeter thickness, i.e. Debye rings, can be rapidly and non-destructively measured, thereby rapidly and non-destructively measuring and analyzing crystal structures, and its crystal structural change of the part inside the sample, such as phase, texture, and stress.

Abstract: The present invention relates to a system (10) for X-ray dark-field, phase contrast and attenuation image acquisition. The system comprises an X-ray source (20), an interferometer arrangement (30), an X-ray detector (40), a control unit (50), and an output unit (60). An axis is defined extending from a centre of the X-ray source to a centre of the X-ray detector. An examination region is located between the X-ray source and the X-ray detector. The axis extends through the examination region, and the examination region is configured to enable location of an object to be examined. The interferometer arrangement is located between the X-ray source and the X-ray detector. The interferometer arrangement comprises a first grating (32) and a second grating (34). For a first mode of operation: The control unit is configured to control at least one lateral movement transducer (70) to move the first grating or move the second grating in a lateral position direction perpendicular to the axis.

Abstract: In an embodiment an optical measuring arrangement includes a tube section-shaped hollow body having a central axis extending from a first end face to an opposite second end face of the hollow body, wherein a spiral-shaped hollow light guide is formed in an inner surface of the hollow body by the inner surface being formed at least partially from a light-reflecting material and being formed as a hollow spiral winding around the central axis with a hollow cross section open toward the central axis, a light source arranged at a first spiral end and lying on the first end face of the hollow body, the light source configured to emit a light beam into the hollow spiral so that the light beam is tangentially to its turns and, after a plurality of reflections inside the hollow spiral, emerges from a second spiral end lying on the second end face of the hollow body and a light detector arranged at the second spiral end, the light detector configured to detect the emerging light beam and to output an electronic measure

Abstract: A system for X-ray analysis, includes: (a) an X-ray analysis assembly configured to (i) direct an X-ray beam to impinge on a surface of a sample, and (ii) receive fluorescence radiation excited from the sample in response to the impinged X-ray beam, (b) a target assembly including measurement targets: placed in an optical path between the X-ray analysis assembly and the sample, and configured to move between (i) one or more first positions in which one or more of the measurement targets are positioned in the X-ray beam, and (ii) one or more second positions in which the optical path is unobstructed by the target assembly, and (c) a processor, configured to control movement of the target assembly between the first and second positions, for alternately, (i) monitoring properties of the X-ray beam using the measurement targets, and (ii) performing the X-ray analysis at a measurement site of the sample.