Abstract: The present disclosure provides systems and methods for controlling an X-ray imaging device. The method may include causing an X-ray source to emit X-rays to irradiate a subject. The method may also include generating an X-ray image of the subject. The X-ray image may be generated using a detector that is arranged to face the X-ray source to detect a portion of the X-rays that pass through the subject. And the method may further include causing to project, using an optical projection device, the X-ray image of the subject on a surface of the subject.

Abstract: An image detector includes a substrate, a circuit layer, a plurality of light detecting elements, a plurality of driving elements and a crystal scintillation layer. The substrate has a surface. The circuit layer is arranged on the surface of the substrate, and defines a plurality of detecting areas arranged in an array. The light detecting elements and the driving elements are disposed at the detecting areas and electrically connected with the circuit layer. Each driving element drives one or more of the light detecting elements. The crystal scintillation layer is arranged opposite to the substrate and covers the detecting areas. The light detecting elements and the driving elements connect with the surface of the substrate. At least one of the light detecting elements and the driving elements is formed by a process different from the process of forming the circuit layer on the substrate.

Abstract: Methods and systems are provided for cooling hot spots on a body coil assembly of an MRI system. In one embodiment, an airflow guide of a body coil assembly of an MRI system comprises a first surface that forms an air passage when the airflow guide is positioned on the body coil assembly, the air passage enclosed by the first surface and a second, outer surface of an RF coil of the body coil assembly, the airflow guide configured to channel cool air generated by a fan to the second, outer surface of the RF coil. The airflow guide may be arranged circumferentially around a portion of the RF coil at one or more ends of the RF coil. The airflow guide may be manufactured as a plurality of airflow guide segments that are glued together.

Abstract: A photon counting radiation detector includes a cell structure including a substrate and an epitaxial layer provided on the substrate, radiation being incident on the epitaxial layer; an inclination ? of the substrate being set in a predetermined range, where tsub is a thickness of the substrate, tepi is a thickness of the epitaxial layer, L is a length of the substrate, and the inclination ? is an inclination of the substrate with respect to an incident direction of the radiation. The epitaxial layer is preferably one type selected from SiC, Ga2O3, GaAs, GaN, diamond, and CdTe. Such a photon counting radiation detector is preferably a direct converting type.

Abstract: Apparatus for x-ray CT scanning of an object includes an x-ray generator 1 mounted on a first support 3 on an outer ring 4 and an x-ray detector 2 mounted on a second support 10 on an inner ring 11, and a drive mechanism arranged to rotate the outer and inner rings 4, 11. The outer and inner rings have a first common axis of rotation and the diameter of the outer ring 4 is greater than the diameter of the inner ring 11 The drive mechanism includes a gearing arrangement connecting the outer and inner rings 4,11. The gearing arrangement comprises first and second toothed rotary gears 14,16.

Abstract: Disclosed herein is a detector, comprising: a radiation absorption layer comprising an electric contact; a filter electrically connected to the electric contact and configured to attenuate signals from the electric contact below a first cutoff frequency; an integrator electrically connected to the filter and configured to integrate signals from the filter over a period of time.

Abstract: A method of operating a radiation apparatus is described. The method includes selecting at least a first angle and a second angle from a set of angles for a first rotation of a gantry of a radiation apparatus. The method also includes generating, using an imaging device mounted to the gantry, a first tracking image of a target from the first angle during the first rotation of the gantry. The method further includes generating, using the imaging device, a second tracking image of the target from the second angle during the first rotation of the gantry.

Abstract: Improved imaging devices and methods. A portable SPECT imaging device may co-register with imaging modalities such as ultrasound. Gamma camera panels including gamma camera sensors may be connected to a mechanical arm. A coded aperture mask may be placed in front of a gamma-ray photon sensor and used to construct a high-resolution three-dimensional map of radioisotope distributions inside a patient, which can be generated by scanning the patient from a reduced range of directions around the patient and with radiation sensors placed in close proximity to this patient. Increased imaging sensitivity and resolution is provided. The SPECT imaging device can be used to guide medical interventions, such as biopsies and ablation therapies, and can also be used to guide surgeries.

Abstract: An imaging system that is configured to automatically obtain and provide two and three-dimensional digital images of various types of objects (e.g., tissue specimens, animals, electrical devices, etc.) for use in analysis thereof in a manner free of manual repositioning of the objects between images and free of movement of an electromagnetic radiation source and detector within or relative to a cabinet housing of the system.

Abstract: A method of grouping detection events in an imaging apparatus is described herein. The detection events can include primary detection events and secondary scattered events, which are frequently discarded due to the secondary scattered events, thus reducing sensitivity of the dataset for eventual image reconstruction. The method includes cell modules cascaded with identical parametrized cells, in a pipeline fashion, having the last cell in the chain circle back to the first cell. A rotating data pointer indicates the location of the first entry in the cell pipeline. The described method enables the grouping of multiple samples of detector data in real time with no loss of information, based on a time and location of the detected event. The method can be implemented in an FPGA as a hardware-based real time process.

Abstract: A correction X-ray detector according to an embodiment includes a plurality of detector elements configured to detect an X-ray, and processing circuitry. The processing circuitry is configured to acquire a plurality of output values respectively corresponding to the plurality of the plurality of detector elements. The processing circuitry is further configured to determine the detector elements to be used in generating correction data based on the plurality of output values.

Abstract: The present disclosure provides a method for processing projection data. The method may include obtaining a first image generated by performing a first scan to a subject by a first imaging device; determining first projection data based on the first image, the first projection data corresponding to a first area of the subject; obtaining second projection data by performing a second scan of the subject using a second imaging device, the second projection data corresponding to a second area of the subject, the first area at least partially overlapping with the second area in an overlapping area; determining registered first projection data by registering the first projection data to the second projection data with respect to the overlapping area; determining scatter component based on the registered first projection data and the second projection data, the scatter component including low-frequency scattered radiation signals.

Abstract: For dead time determination for a gamma camera or other detector, a long-lived point source of emissions is positioned so that the gamma camera detects the emissions from the source while also being used to detect emissions from the patient. The long-lived point source, in the scan time, acts as a fixed frequency source of emissions, allowing for dead time correction measurements that include the crystal detector effects.

Abstract: Computed tomography (CT) measurement data of the patient is acquired using a CT device having a quantum counting X-ray detector, and the CT measurement data is processed to generate result data, considering a specific information content of the CT measurement data resulting from the use of the quantum counting X-ray detector in acquiring the CT measurement data. The result data is suitable for use in the planning of irradiation of the patient. The result data is provisioned to an interface such that the result data is usable for planning the irradiation of the patient.

Abstract: A computer-implemented method and system of CT reconstruction can include receiving one or more CT projection images; performing smooth filtering on the one or more CT projection images to generate one or more smooth boundary filtered images; and back-projecting the one or more smooth boundary filtered images.

Abstract: A method for training of a process for generating an image of an object from measurement data modified by scatter radiation. Individual sets of measured data are each made up of matrix elements. Each matrix element corresponds to an individual detector element that detects ionizing radiation. Signals measured by the individual detector elements in an energy bin are assigned as values for each matrix element. The individual sets of measured data and a template image are used as input for a procedure for determining a correction image for correcting a modification of the measured data by the scatter radiation. The preliminary image obtained using the individual sets of measured data is adjusted to the template. These steps are repeated until the deviation between the preliminary image and the template image is below a threshold. The procedure is used to generate the image of the object from the measurement data.

Abstract: Although the efficiency of fluoroscopy has always been well known in the Dental clinic, the extra-oral methods that were approached to realize it have always needed a large x-ray dose. This invention lowered the exposure of patient and operator at an extreme level by implementing an intraoral sensor of small area using multiple pickup binning that enhance pulsed x-ray and Signal to noise ratio (SNR) to lower the dose necessary for video. Additionally, it can be used efficiently in dental procedures by suggesting Guide Support Device that includes bite block and open block in between the sensor and emitter for an accurate and convenient scan.

Abstract: An X-ray detector according to embodiments is an X-ray detector of a direct conversion type in which a plurality of X-ray detection elements are arranged in a column direction and a channel direction and voltage is applied between anodes and cathodes. The X-ray detector includes processing circuitry. The processing circuitry performs control so as not to use, for generation of image data, data from the X-ray detection elements in end portions in one of the column direction and the channel direction of the X-ray detection elements, and so as to use, for generation of image data, data from the X-ray detection elements in other than the end portions.

Abstract: A system and method for the prediction of a thermal load for a proposed imaging procedure in view of the current thermal state for an imaging system employs a suitable software program/algorithm which determines a predicted or likely set of individual steps for a proposed imaging procedure to be performed. The system receives parameters for the particular imaging procedure to be performed and compares these parameters with information stored concerning prior performed imaging procedures to locate prior performed imaging procedures that have similar parameters to that for the proposed imaging procedure. The system utilizes the similar prior performed procedures as models of a likely set of imaging steps for the proposed procedure and estimates the heat generation produced by the models. The software program/algorithm can then determine if the entire proposed imaging procedure represented by the models can be successfully performed under the current thermal state for the imaging system.

Abstract: A gamma-ray detector includes a plurality of modular one-dimensional arrays of monolithic detector sub-modules. Each monolithic detector sub-module includes a scintillator layer, a light-spreading layer, and a photodetector layer. The photodetector layer comprises a two-dimensional array of photodetectors that are arranged in columns and rows. A common printed circuit board is electrically coupled to the two-dimensional array of photodetectors of the plurality of modular one-dimensional arrays of monolithic detector sub-modules of a corresponding modular one-dimensional array. The two-dimensional array of photodetectors can be electrically coupled in a split-row configuration or in a checkerboard configuration. The two-dimensional array of photodetectors can also have a differential readout.

Abstract: An X-ray scanner includes a frame; an X-ray generator mounted within the frame, and outputting a vertical fan-shaped beam toward an object; the X-ray generator configured to rotate in a left-right direction; a linear vertical X-ray detector mounted in the frame beyond the object, the linear vertical X-ray detector configured to slide in sync with a rotation of the X-ray generator; a first flat panel X-ray detector below the object, the first flat panel X-ray detector being stationary; a second flat panel X-ray detector above the object, the second flat panel X-ray detector being stationary; a workstation that integrates scans from the first flat panel X-ray detector, the second flat panel X-ray detector and the linear vertical X-ray detector to generate a full-body scan of the object.

Abstract: A measurement image acquisition unit 72 acquires a measurement image indicating a measurement value of a predetermined physical quantity for a measurement target including a plurality of types of body tissues. A body tissue image generation unit 74 generates a body tissue image associated with each of the plurality of types of body tissues by executing, for the each of the plurality of types of body tissues, a filtering process corresponding to the each of the plurality of types of body tissues with respect to the measurement image. A masked body tissue image generation unit 78 generates a masked body tissue image associated with a specific type of body tissue by executing, with respect to the body tissue image associated with the specific type of body tissue, a masking process which is based on the body tissue image associated with a different type of body tissue.

Abstract: There is provided a circuit (502; 503; 504) configured for operation with a multi-bin photon-counting x-ray detector (20) having multiple energy thresholds, wherein said circuit (502; 503; 504) is configured to obtain or generate several Total Time-Over-Threshold (TTOT) signals corresponding to several different energy thresholds, and provide energy integrating information based on said several TTOT signals.

Abstract: A radiation scanning system comprises a radiation detector configured to measure at least some radiation. The radiation detector comprises an arc portion exhibiting a semicircular shape, the arc portion comprising a plurality of facets on a side thereof, a detector module coupled to each facet, the detector module comprising a base portion comprising a first substantially planar surface in contact with the facet, a detector unit coupled to a second substantially planar surface of the base portion, the second substantially planar surface parallel with the first substantially planar surface, and a cooling structure in thermal communication with a side of the arc portion opposite the plurality of facets. Related radiation detectors and radiation systems are also disclosed.

Abstract: An x-ray treatment system includes an electron beam generator configured to generate an electron beam and an x-ray treatment head comprising an array of pixel source cells including side walls defining an x-ray transmissive interior. The side walls include an x-ray absorptive material. A target element is positioned to, when impacted by the electron beam, generate x-ray photon radiation within the x-ray transmissive pixel source cell interior. An electron beam control system includes a controller configured to control responsive to a treatment plan at least one of the direction and intensity of the electron beam to a particular one of the pixel source cells, and then responsive to the treatment plan to control at least one of the direction and intensity of the electron beam to at least one additional pixel source cell. A method of treating a patient with x-ray photon radiation is also disclosed.

Abstract: A method includes recording a plurality of projection recordings along a linear trajectory. An X-ray source and an X-ray detector move in parallel opposite to one another along the linear trajectory and the examination object is arranged between the X-ray source and the X-ray detector. The method includes reconstructing a tomosynthesis dataset, respective depth information of the examination object is respective determined along an X-ray beam bundle spanned by the motion along the linear trajectory and an X-ray beam fan of the X-ray source perpendicular to the linear trajectory so that different respective depth levels in the object parallel to a detection surface of the X-ray detector are respectively scanned differently. Finally, the method includes determining a first slice image with a first slice thickness in a depth level, among the respective depth levels, substantially parallel to the detection surface of the X-ray detector based on the tomosynthesis dataset.

Abstract: A method of operating imaging and tracking. The method includes determining, for each angle of a plurality of angles from which tracking images can be generated by an imaging device, a value of a tracking quality metric for tracking a target based on an analysis of a projection generated at that angle. The method also includes selecting, by a processing device, a subset of the plurality of angles that have a tracking quality metric value that satisfies a tracking quality metric criterion, one or more angles of the subset to be used to generate a tracking image of the target during a treatment stage, wherein the subset comprises at least a first angle and a second angle that is at least separated by a minimum threshold from the first angle.

Abstract: A radiation detector according to an embodiment includes a scintillator array, a sensor array, electronic circuitry, a switch, and control circuitry. The scintillator array includes a plurality of scintillator pixels each configured to convert radiation into light. The sensor array includes a plurality of detection elements each configured to detect the light. The electronic circuitry is configured to output digital data on the basis of signals output from the detection elements. The switch is provided between the sensor array and the electronic circuitry. The control circuitry is configured to control the switch on the basis of a positional relation between the sensor array and the scintillator array.

Abstract: An imaging control apparatus includes a hardware processor that acquires a first imaging condition set as a imaging condition for a preliminary exposure performed prior to a main exposure that performs an exposure of radiation on a subject, and the hardware processor performs control based on compatibility of the acquired first imaging condition and a second imaging condition input as an imaging condition for the subject.

Abstract: An X-ray device is provided, which includes a flexible substrate, a driver integrated circuit, and a scintillator layer. The flexible substrate includes an array portion and an extension portion. The driver integrated circuit is disposed on the flexible substrate. The scintillator layer is disposed on the flexible substrate.

Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltages output from the amplifiers of the plurality of pixels to digital values; and a conversion unit configured to convert the digital value output from the A/D converter to the number of photons by referring to reference data, for each of the plurality of pixels, and the reference data is created based on a gain and an offset value for each of the plurality of pixels.

Abstract: Systems and methods for improving soft tissue contrast, characterizing tissue, classifying phenotype, stratifying risk, and performing multi-scale modeling aided by multiple energy or contrast excitation and evaluation are provided. The systems and methods can include single and multi-phase acquisitions and broad and local spectrum imaging to assess atherosclerotic plaque tissues in the vessel wall and perivascular space.

Abstract: An electronic device includes a memory storing one or more instructions; and a processor configured to execute the one or more instructions stored in the memory to receive audio data corresponding to a user's utterance, to identify the user's utterance characteristics based on the received audio data, to determine a parameter for performing voice activity detection, by using the identified user's utterance characteristics, and to perform voice activity detection on the received audio data with respect to the user's utterance by using the determined parameter.

Abstract: A lighting arrangement for a medical imaging system having a cylindrical wall that forms a tunnel that receives a patient to be scanned. The lighting arrangement includes a transparent wall section formed in the wall, wherein the transparent wall section extends along a transparent portion of a wall circumference. The imaging system also includes a lighting device located adjacent an outer surface of the transparent wall section. The lighting device extends along a device portion of a wall circumference corresponding to the transparent portion wherein light emitted by the lighting device is transmitted through the transparent wall section in a direction orthogonal to a longitudinal axis of the tunnel to circumferentially illuminate the tunnel. In addition, a system status is indicated by a color of light emitted by the LEDs. Further, light emitted by the lighting device varies in intensity to indicate a changing count rate.

Abstract: The present disclosure is related to a system. The system may include a gantry, a detector assembly including a plurality of detector modules arranged on the gantry, and/or a cooling assembly configured to cool the detector assemble. Each of the plurality of detector modules may include a crystal array configured to detect radiation rays, and a shielding component configured to shield the crystal array from an electromagnetic interference. The cooling assembly may include a plurality of cooling components. Each of the plurality of cooling components may be embedded in a corresponding detector module of the plurality of detector modules.

Abstract: A lighting device and method for manufacturing the lighting device are provided. A substrate contains at least a first surface and a second surface opposing the first surface. Light-sensitive material is provided on the first surface and/or the second surface. The light-sensitive material is exposed to light by applying the light from a light source onto a mask having a periodic pattern of light-attenuating features with interspaced light-permeable features. The light forms a periodic distribution of high intensity regions with interspaced low intensity regions at the first surface and/or the second surface. A periodic structure is formed based on the exposed light-sensitive material and includes light-attenuating features and light-permeable features corresponding to the light-attenuating features and light-permeable features of the mask.

Abstract: An image guiding device includes a gantry, an imaging source, an imager, and an image server. The imaging source, the imager and the image server are all mounted on the gantry. The imager is connected to the image server. The imaging source is arranged to face the imager. The imaging source emits X-rays. The imager receives X-rays passing through an affected part of a patient, generates projection data based on the received X-rays, and sends the projection data to the image server. The image server processes the projection data to obtain an image of the affected part.

Abstract: A deterioration determination method in a deterioration determination device configured to determine deterioration of an X-ray detector of an industrial X-ray imaging apparatus, the deterioration determination method including: an acquisition step of acquiring a captured image generated by the X-ray detector; a statistical processing step of generating statistical processing information of the captured image; and a determination step of determining whether or not the X-ray detector has been deteriorated, based on the statistical processing information.

Abstract: Described here are systems and methods for optimization techniques for automatically selecting x-ray beam spectra, energy threshold, energy bin settings, and other imaging technique parameters for photon-counting detector computed tomography (“PCCT”). The techniques described here are generally based on subject or object size, material of interest, and location of the target material. Advantageously, the optimizations can be integrated with different PCCT systems to automatically select optimal imaging technique parameters before scanning a particular subject or object.

Abstract: The present disclosure may provide a detector module of an imaging apparatus. The detector module may include a detector assembly configured to detect a signal associated with an object; a cover assembly configured to accommodate the detector assembly; and at least one cooling assembly operably coupled to the cover assembly. The at least one cooling assembly may be configured to cool the detector assembly by providing a cooling medium to the cover assembly.

Abstract: A semiconductor laser has a mirror formed in a gain chip. The mirror can be placed in the gain chip to provide a broadband reflector to support multiple lasers using the gain chip. The mirror can also be placed in the gain chip to have the semiconductor laser be more efficient or more powerful by changing an optical path length of the gain of the semiconductor laser.

Abstract: The present disclosure relates to a data acquisition device and a configuration method. The device includes a channel, wherein the channel includes a data control panel and a plurality of detection components. At least one of the plurality of detection components is directly connected to the data control panel. The data control panel may be configured to identify the channel and send a configuration command to the plurality of detection components. The plurality of detection components may determine channel location numbers of the plurality of detection components based on the configuration command and send the channel location numbers to the data control panel. The data control panel may determine identification numbers for the plurality of detection components based on the channel location numbers and allocate the identification numbers to the plurality of detection components.

Abstract: A method and apparatus is provided that uses a deep learning (DL) network together with a multi-resolution detector to perform X-ray projection imaging to provide improved resolution similar to a single-resolution detector but at lower cost and less demand on the communication bandwidth between the rotating and stationary parts of an X-ray gantry. The DL network is trained using a training dataset that includes input data and target data. The input data includes projection data acquired using a multi-resolution detector, and the target data includes projection data acquired using a single-resolution, high-resolution detector. Thus, the DL network is trained to improve the resolution of projection data acquired using a multi-resolution detector. Further, the DL network is can be trained to additional correct other aspects of the projection data (e.g., noise and artifacts).

Abstract: A medical imaging system for detecting ionizing radiation. The system includes one or more pixilated imagers positioned to acquire patient image data and one or more position sensors positioned to acquire patient position data. Once the patient image data and patient position data are acquired, one or more processors operably connected to each of the one or more pixilated imagers and one or more position sensors calculate a three-dimensional mass distribution based on patient image data and patient position data.

Abstract: A method for operating a medical imaging apparatus includes acquiring a first image data set of a region of interest of the patient; automatically evaluating the first image data set using at least one evaluation algorithm yielding evaluation information, regarding at least one type of findings, describing a presence of at least one finding of the type requiring the acquisition of a second image data set and at least one imaging parameter for the second image data set; automatically notifying a user, upon the evaluation information indicating the presence of a required second image data set, of the required acquisition of the second image data set; and acquiring the second image data set acquiring the second image data set after confirmation of acquisition of the second image data set by the user, in a same examination process, using the at least one imaging parameter of the evaluation information.

Abstract: There are provided a radiation detector module, a radiation detector, and a radiographic imaging apparatus which make it possible to increase the row number while suppressing a length in a body-axis direction. The radiation detector module includes a detector substrate on which a scintillator, a photodiode, and AD conversion chips are loaded, and a control substrate which supplies power to the detector substrate and controls the operation of an AD conversion unit (AFE) of each AD conversion chip of the detector substrate. The plurality of radiation detector modules configure a radiation detector which suppresses the length in the body-axis direction by connecting together the two substrates so as to form a two-stage structure by stacking connectors.

Abstract: An apparatus suitable for detecting X-ray is disclosed. In one example, the apparatus comprises an X-ray absorption layer and a controller. The X-ray absorption layer comprises a first pixel and a second pixel. The controller is configured for determining whether all carriers generated in the X-ray absorption layer by an X-ray photon are collected by the first pixel and the second pixel, and determining the energy of the X-ray photon based on a sum of a first portion of the carriers that is collected by the first pixel and a second portion of the carriers that is collected by the second pixel.

Abstract: Disclosed herein is radiation detector, comprising a first photodiode comprising a first junction; and a first scintillator, wherein a first point in a first plane and inside the first scintillator is essentially completely surrounded in the first plane by an intersection of the first plane and the first junction. The first junction is a p-n junction, a p-i-n junction, a heterojunction, or a Schottky junction. The radiation detector further comprises a first reflector configured to guide essentially all photons emitted by the first scintillator into the first photodiode. The first scintillator is essentially completely enclosed by the first reflector and the first photodiode.

Abstract: A computed tomography device includes, in an embodiment, a gantry including a tunnel-shaped opening, an examination object being introducible into the tunnel-shaped opening for an examination via the computed tomography device; and a radiation protection apparatus to cover the tunnel-shaped opening, the radiation protection apparatus including a first connector and the gantry includes a second connector. In an embodiment, a detachable connection is formable via the first connector and the second connector, to counteract removal of the radiation protection apparatus from the tunnel-shaped opening.

Abstract: A system and method include acquisition of a plurality of projection images of a subject, each of the projection images associated with a respective projection angle, determination, for each of the projection images, of a center-of-light location in a first image region, determination of a local fluctuation measure based on the determined center-of-light locations, and determination of a quality measure associated with the plurality of projection images based on the local fluctuation measure.