22results about "Radiation detection arrangements" patented technology

A multisource interventional X-ray imaging system including a ring assembly is disclosed. The ring assembly may include a first arc including a plurality of X-ray sources, and a second arc including a plurality of detectors. The X-ray sources and the detectors may be arranged to view a patient. Further, the ring assembly may axially rotate or wobble by a maximum angular displacement that is equivalent to a distance between adjacent X-ray sources.

An apparatus and method for calibrating a photon-counting computed tomography (PCCT) apparatus, includes performing for each offset from a rotation center, a scan of a calibration phantom placed at the offset to obtain calibration data including measured count rate data. Location parameters of the calibration phantom are estimated for each of the plurality of offsets, based on the obtained calibration data. Thickness data of the calibration phantom is determined based on the estimated location parameters. A curve is estimated, by curve fitting using the measured count rate data and the determined thickness data, indicating a relationship between the energy bin count rate and phantom thickness, for each energy bin of each pixel of the plurality of pixels. A first look-up table is generated for pixel-to-pixel count rate variation correction, and the first look-up table is applied to acquired energy bin count data to reduce ring artifacts in an image reconstructed using the acquired energy bin count data. A second look-up table is generated for both pixel-to-pixel count rate variation correction and additional count-rate non-linearity correction, using water as the calibration material, and the second look-up table is applied to reduce both ring artifacts and cupping or doming artifacts in an image reconstructed using the acquired energy bin count data.

The present disclosure discloses a detector module, a detector, and a medical imaging apparatus. The detector module includes a detection unit, analog-to-digital conversion units, and a signal transmission unit. The detection module is configured to convert an optical signal into an analog signal. The analog-to-digital conversion units each configured to convert an analog signal into a digital signal. The signal transmission unit is disposed at a side of the detection unit in a first direction and includes at least one first circuit board and second circuit boards. Each of the at least one first circuit board is connected to the detection unit and a plurality of the second circuit boards. Each of the second circuit boards is connected to at least one of the analog-to-digital conversion units.

Disclosed are a method, device, and system for X-ray CT contrast imaging using magnetic nanoparticles. The method includes: rotating a target object containing magnetic nanoparticles as contrast agent for one circle relative to X-rays, recording multiple consecutive transmission projection images of the target object at all angles; for multiple transmission projection images at each angle, after conducting image post-processing operations, performing inverse projection transform on magnetic nanoparticle imaging projection images at all angles to obtain a tomographic imaging result. The image post-processing operation includes: time-frequency transform: converting the third dimension of the three-dimensional time domain matrix to frequency domain to obtain a three-dimensional frequency domain matrix; feature extraction: selecting a two-dimensional matrix with frequency of kf along the third dimension of the three-dimensional frequency domain image matrix; k is a positive integer; f is the frequency of the excitation magnetic field.

The present invention relates to a computer-implemented method for converting image data of an X-ray detector to a predefined data format of an X-ray control device. The method comprises receiving a request from the X-ray control device to provide an X-ray image, the request comprising a set of predefined image parameters of the X-ray image, sending a trigger signal to the X-ray detector to provide X-ray image data acquired with the X-ray detector, and receiving the X-ray image data acquired by the X-ray detector from the X-ray detector. The method comprises further processing the received X- ray image data, thereby generating a processed X-ray image comprising the predefined image parameters, and providing the processed X-ray image to the X-ray control device. The set of predefined image parameters comprises a predefined size of the X-ray image. Processing the received X-ray image data comprises interpolating the received X-ray image data to generate the processed X-ray image with the predefined size.

An X-ray fluoroscopic imaging apparatus includes: a C-arm 17 that is rotatable, and supports an X-ray tube 13 and an X-ray detector 15 such that the X-ray tube 13 and the X-ray detector 15 are opposite to each other; an image generator 43 that generates X-ray images L using detection signals of the X-ray detector 15; and an image display device 11 that displays the X-ray images L. The image display device 11 includes: an image display unit 49 that can display information display images D in a row and a column in a matrix; an input unit 51 that inputs an instruction to change a position at which image information K is displayed in each of the information display images D such that at least two of the X-ray images L are displayed adjacently in the respective information display images D; and an image display control unit 57 that causes the image display unit 49 to display the X-ray images L adjacently based on a content of the instruction.

An X-ray imaging apparatus and a control method thereof set various types of parameters related to X-ray imaging including an X-ray radiation region using a camera image and automatically controls X-ray imaging. An X-ray imaging apparatus includes a capturing unit that captures a camera image, an X-ray source on which a collimator that adjusts an X-ray radiation region is mounted, a storage unit that maps and stores an X-ray imaging region for each of a plurality of X-ray imaging protocols, an input unit that receives a selection of one of the plurality of X-ray imaging protocols, and a control unit that extracts an X-ray imaging region mapped with the selected X-ray imaging protocol from the camera image and controls the collimator so that the X-ray radiation region corresponds to the extracted X-ray imaging region.

Laser-based alignment support device (1) for assisting the alignment of an instrument (2) for puncturing an object (3), in particular for an X-ray imaging system (4), comprising: - a first line laser (5) for generating a first laser beam in a first laser plane (7), which is configured to generate a first laser line (14) on a first surface line (9) of the instrument (2) in a first section plane (11) of the instrument (2) when the first section plane (11) coincides with the first laser plane (7), and - a second line laser (6) for generating a second laser beam in a second laser plane (8) intersecting the first laser plane (7), characterized by: - ​​a point-like shielding element (16) of the second line laser (6) for generating a shadow line (17) in the second laser plane (8), wherein the second line laser (6) is configuredto map a shadow point (18) of the shadow line (17) onto a second surface line (10) of the instrument (2) in a second cutting plane (12) of the instrument (2) when the first cutting plane (11) and the second cutting plane (12) are aligned.

The embodiment of the application relates to the technical field of tomography, in particular to a breast imaging system, method and equipment based on a surface array source and a storage medium, the breast imaging system comprising a power module, a surface array source, a detection module, a data acquisition module and an image reconstruction module; the detection module comprises a detection platform, a detector and a connecting arm; the surface array source and the detection platform are located on two sides of an imaging object, the surface array source is a flat surface array source or an arc surface array source; when the flat surface array source is used, the flat surface array source comprises at least two plane ray source units; when the arc surface array source is used, only one surface array source is needed, and the surface array source semi-surrounds the imaging object. The breast imaging system based on the surface array source can realize virtual rotation projection of the imaging object, does not need a moving part, and can obtain more longitudinal projection information, thereby improving the longitudinal resolution of a reconstructed image.

The present invention aims to suppress data loss in a radiation imaging device having a structure in which multiple partition members are attached to a sensor substrate in a tiling manner. [Solution] The device comprises a plurality of partition phosphor members, each having a plurality of light-emitting parts comprising a partition wall having an opening region and a phosphor located in the opening region, and a plurality of photoelectric conversion members, each having a plurality of light-receiving parts comprising a photoelectric conversion element, wherein the plurality of partition phosphor members are arranged facing the photoelectric conversion members and side by side, and the width of each partition phosphor member in at least one direction in the side-by-side direction of the light-emitting part adjacent to the side-by-side part of the partition phosphor member is smaller than the width of the other light-emitting parts.

A radiation imaging device according to one embodiment comprises a sensor panel, a control unit, and a housing that accommodates the sensor panel and the control unit. The control unit comprises a control board that controls the reading of a signal from the sensor panel, a mounting element to which the control board is attached, a side plate attached to the mounting element and having a side wall section with an opening, and a connector provided on the control board for connecting the control board to the outside, which extends through the opening in the side wall section. The housing is provided with an opening for inserting the control unit into the housing along a second direction.

Systems and methods are provided, including a method for training a neural network model for analyzing computed tomography (CT) images acquired using a photon counting CT system. The method can include receiving photon counting CT data for multiple ranges of energy spectrum, and optionally a plurality of other parameters such as slice thickness and reconstruction kernel, acquired using the photon counting CT system, reconstructing a plurality of virtual monoenergetic images (VMIs) for the energy spectrum using the photon counting CT data, and generating a trained neural network model using the plurality of VMIs for the full continuous energy spectrum, and optionally along with other image acquisition and reconstruction parameters. The neural network model can be used to analyze CT images acquired using a photon counting CT system.

To solve the problem that, in a radiographic apparatus provided with a plurality of batteries, if the plurality of batteries are simultaneously charged from one charging circuit, the charging current is divided and longer charging time is required before the radiographic apparatus becomes usable.SOLUTION: Provided is a radiographic apparatus that includes: at least two batteries; a charging unit for inputting a current to the plurality of batteries to charge the batteries; and a current control unit for controlling the current input by the charging unit to each of the plurality of batteries. The current control unit determines a current to be input, by the charging unit, to each of the plurality of batteries on the basis of a difference between a remaining power of each of the plurality of batteries and a predetermined threshold value.SELECTED DRAWING: Figure 5

The present invention comprises a plurality of partition wall fluorescent members each comprising a plurality of light emitting portions provided with a partition wall comprising an open region and a fluorescent material positioned in the open region, and a photoelectric conversion member comprising a plurality of light receiving portions each provided with a photoelectric conversion element, wherein: the plurality of partition wall fluorescent members are disposed facing the photoelectric conversion member and in parallel with each other; and each partition wall fluorescent member has, in at least one direction of the parallel arrangement direction of the light emitting portion adjacent to the parallel arrangement portion with another partition wall fluorescent member, a width smaller than the width of another light emitting portion.

The present invention relates to a computer-implemented method for converting image data of an X-ray detector to a predefined data format of an X-ray control device. The method comprises receiving a request from the X-ray control device to provide an X-ray image, the request comprising a set of predefined image parameters of the X-ray image, sending a trigger signal to the X-ray detector to provide X-ray image data acquired with the X-ray detector, and receiving the X-ray image data acquired by the X-ray detector from the X-ray detector. The method comprises further processing the received X-ray image data, thereby generating a processed X-ray image comprising the predefined image parameters, and providing the processed X-ray image to the X-ray control device.

This invention provides a radiography system that allows the operator to appropriately determine whether the required dose is being applied to the light-gathering field during radiography using automatic exposure control. [Solution] The radiography system according to the present invention includes a radiation generating device that irradiates radiation, a radiography device that generates a radiographic image based on the radiation, and a control device that communicates with the radiography device and receives the radiographic image and controls its operation, and is characterized by comprising an acquisition means for acquiring a radiographic image obtained based on the radiation, and a calculation means for calculating a plurality of dose index values ​​from the radiographic image.

A specialized oral sensory device having a housing for X-ray films or sensors and a method of capturing dental X-ray images for patients with developmental disabilities or limited behavioral cooperation. The device provides one or more oral sensory members. The one or more oral sensory members includes a receipt configured to receive an X-ray film or sensor. As a patient chews on the oral sensory member, a healthcare professional can capture X-ray images of the patient's teeth.

The present disclosure relates to methods and devices for data transmission. The methods is implemented on a data processing unit (220) of a computed tomography (CT) device, the data processing unit (220) is communicatively connected to a plurality of first communication links and at least one second communication link. The method comprises: determining, whether a first communication link group includes at least one failed communication link, the first communication link group including the plurality of first communication links; in response to determining that the first communication link group includes at least one failed communication link, selecting, from the at least one second communication link, at least one target communication link matching the at least one failed communication link; and adjusting the first communication link group to a second communication link group, and the second communication link group including at least the at least one target communication link.

An intra-oral imaging system includes an imaging device and a control device. The imaging device includes an imager, a controller, and a case in which the imager and the controller are housed. The imager performs imaging detection for detecting radiation in order to acquire an image of an object and monitoring detection for detecting radiation in order to monitor the dose of radiation. The controller transmits an imaging signal and a monitoring signal to the control device, the imaging signal acquired by the imaging detection and the monitoring signal acquired by the monitoring detection. The control device receives the imaging signal and the monitoring signal, and transmits a control command to the controller, the control command generated based on the monitoring signal. The controller controls the imager according to the control command.

To suppress variation in radiation exposure dose.SOLUTION: A radiation imaging device includes a processing unit provided in a pixel area in which multiple pixels for detecting radiation are arranged, and which processes output signals output from multiple detection areas, including detection pixels that output a signal corresponding to the radiation dose. The processing unit generates weighting information for the multiple detection areas by comparing the output signal with preset reference information, and generates determination information for controlling radiation irradiation by comparing dose information in which the output signal is weighted on the basis of the weighting information with a preset threshold.SELECTED DRAWING: Figure 4

An apparatus for detecting X-rays is disclosed. In one example, the apparatus includes: an X-ray absorbing layer (110) comprising a first pixel and a second pixel; and a controller (338). The controller (338) is configured to determine that charge carriers generated by a single X-ray photon are collected by the first pixel and the second pixel. The controller (338) is also configured to determine the energy of the single X-ray photon based on a first voltage detected by the first pixel and a second voltage detected by the second pixel. The first voltage and the second voltage are caused by the single X-ray photon.