286 results about "Radiation imaging" patented technology

The invention belongs to the technical field of organic radiation luminescence and radiation imaging, and discloses an aggregation-induced delayed fluorescence (AIDF) type organic scintillator material and a preparation method thereof, and a preparation method and application of a flexible organic scintillation film. The molecular structure of the material comprises carbonyl, methylene, sulfuryl and other connecting units, phthalonitrile is used as an acceptor unit, carbazole is used as a donor unit, an aggregation-induced excitation state is formed through space charge transfer among molecules, efficient AIDF luminescence and large Stokes shift characteristics are realized, the self-absorption phenomenon is effectively avoided, and the luminescent efficiency is improved. The X-ray fluorescence probe is suitable for a luminescence process under an X-ray excitation condition, the sensitivity of X-ray detection is remarkably improved, and the lowest detection limit can reach 276nGy.s <-1 > and is far superior to the 5.5 mu Gy.s <-1 > standard required by medical diagnosis. Besides, the flexible scintillator film prepared based on the material system radiates and emits light within the waveband range of 450-750 nm and is perfectly matched with the response area of a silicon-based detector, X-ray imaging with the high signal-to-noise ratio is achieved, and the imaging resolution is as high as 20.01 lp.mm <-1 >.

The invention belongs to the technical field of narrow-band optical radiation imaging, and particularly relates to a narrow-band EUV and BEUV radiation imaging device based on a nano polycrystalline hexagonal boron nitride scintillator. The imaging device is composed of a nano polycrystalline hexagonal boron nitride scintillator plated with Zr, Mo or Nb metal, a high-precision camera, a vacuum interface flange and a shielding shell, and narrow-band selective imaging can be achieved in the wave band of 6-14 nm. The radiation imaging device has high sensitivity, narrow-band selectivity and excellent radiation resistance to 13.5 nm EUV light and 6.7 nm BEUV light, and compared with a traditional YAG-based imaging device, the radiation imaging device has remarkable advantages. The invention provides an innovative solution for high-performance EUV and BEUV radiation imaging, and has important application value in the field of EUV and BEUV beam diagnosis.

The invention discloses a portable X-ray back scattering security check system based on AI image enhancement. The system belongs to the technical field of radiation imaging, and comprises a sensing unit used for sensing physical situation information in an imaging process so as to generate time-sequenced physical prior data; the prediction unit is used for predicting a future scanning behavior based on the physical prior data to generate a feed-forward control instruction and prediction confidence; the regulation and control unit is used for adaptively regulating and controlling scanning parameters based on the feedforward control instruction and recording execution information including regulation and control residual errors; and the AI reconstruction processor is used for performing enhanced reconstruction on the original X-ray image based on the physical priori data, the prediction confidence and the execution information. By constructing an intelligent closed loop of perception, prediction, regulation and control and reconstruction, physical uncertainty information in the imaging process is quantized and used for guiding AI reconstruction, so that the problem of information fault between physical acquisition and digital reconstruction is solved, and the quality and reliability of a final image are improved.

The present disclosure relates to the technical field of radiation imaging. Provided are an image processing method and apparatus, and a transmission scanning system. The image processing method comprises: performing sampling processing on a transmission image, so as to obtain an image to be processed, wherein the transmission image is obtained by using a multi-column detector to detect the transmission intensity of an object during transmission scanning; determining a region to be identified in said image; using a candidate depth to perform reconstruction processing on said region, so as to obtain a reconstruction result for said region; determining the edge sharpness of the reconstruction result; and when the edge sharpness is greater than a sharpness threshold value, using the candidate depth as the depth of said region.

To enhance reliability of breath-holding failure determination.SOLUTION: A kymographic apparatus comprises: a waveform acquisition part that acquires a lung field signal waveform regarding a lung field and a periodic signal waveform synchronous with a heartbeat from a dynamic image acquired in radiation kymography based on photographing conditions including breath-holding instructions; and a determination part that determines the occurrence of a breath-holding failure during the radiation kymography, on the basis of the result of comparison between the acquired lung field signal waveform and the acquired periodic signal waveform.SELECTED DRAWING: Figure 5

According to one embodiment, a radiation imaging apparatus includes a sensor panel, a control unit, and a housing that houses the sensor panel and the control unit. The control unit includes: a control substrate that controls readout of a signal from the sensor panel; a mounting member on which the control substrate is mounted; a side plate fixed to the mounting member and having a side wall portion provided with an opening portion; and a connector which is provided on the control board in order to connect the control board and the outside, and which passes through the opening part of the side wall part. The housing is provided with an opening for inserting the control unit into the housing along the second direction.

In order to support imaging of a radiographic imaging apparatus including a radiation source that emits radiation, and an optical camera (21) that is mounted on the radiation source and that captures an optical image (G1) of a subject in a direction from the radiation source, a processor (41) derives a relative angle between the radiation source and a target plane; and displays the optical image (G1) and an angle indicator representing the relative angle and a target angle on a display (25) mounted on the radiation source.

A radiation imaging apparatus includes a radiation detection sensor configured to detect radiation, an electric circuit board, a first base including a radiation shielding member located between the radiation detection sensor and the electric circuit board, the first base being configured to support the electric circuit board, a housing containing the radiation detection sensor, the electric circuit board, and the first base in an internal space of the housing, and a first fixing portion configured to fix the first base to a back surface of the housing so that the electric circuit board faces the back surface of the housing with a gap in the internal space, wherein the first fixing portion is located in an area inside an outer periphery of the radiation shielding member in a planar view along a radiation incident direction.

To provide a radiation image processing device, a method, and a program which enable the derivation of a compositional ratio in a subject with high accuracy.SOLUTION: A processor acquires two radiation images based on radiation that is transmitted through a subject including a plurality of compositions and has different energy distributions from each other, derives body thicknesses of the subject as a first body thickness and a second body thickness, respectively, for each pixel for each of the two radiation images by using an attenuation coefficient according to an order in which the radiation is transmitted through the plurality of compositions, and derives a compositional ratio of the subject for each pixel of the radiation image based on the first body thickness and the second body thickness.SELECTED DRAWING: Figure 3

The invention provides a material sorting system, and relates to the field of task scheduling, the field of image processing, the field of radiation imaging, the field of material sorting or other technical fields. The system comprises: a material sorting device configured to sort a target material to a target position; the edge equipment is in communication connection with the material sorting equipment, and is configured to determine a current sorting stage and a calculation task of the target material according to sorting data in response to the sorting data for the target material obtained from the material sorting equipment; according to the task attribute of the calculation task, the calculation task is allocated to at least one of the edge device and the cloud server for execution; and the cloud server is in communication connection with the edge equipment and is configured to execute the calculation task under the condition that the calculation task distributed by the edge equipment is received, and return a calculation result to the edge equipment, so that the edge equipment indicates the material sorting equipment to process the target material.

The invention provides a portable low-cost millimeter wave radiation imaging system and system. The system comprises a millimeter wave radiometer, an IMU module, a range finder, an optical camera, an acquisition module, a wireless transceiver module, a power supply module, an equipment appearance tool, client equipment and a detachable portable support rod. The millimeter wave radiometer is used for acquiring a millimeter wave radiation brightness temperature value of an observation scene, the IMU module is used for acquiring azimuth angle and pitch angle information of the meter wave radiometer, the range finder is used for acquiring the distance to the observation scene or a target, and the optical camera is used for acquiring an optical image of the observation scene; synchronously acquiring the data through an acquisition module; the collected data is transmitted to client equipment through the wireless receiving and transmitting module; performing two-dimensional uniform interpolation on the non-uniform azimuth angle and pitch angle on the client device; performing corresponding interpolation processing on the millimeter wave radiation brightness temperature value to generate a homogenized millimeter wave radiation image; and performing registration and fusion display on the millimeter wave radiation image and the optical image.

Optical element for a radiation imaging device, comprising: a scintillator which receives radiation (100) to emit fluorescence light with a longer wavelength than the radiation (100) and which is uniformly formed on a radiation-incident substrate surface of a lens-shaped substrate (14) provided in an objective lens (10), wherein the scintillator is made of: a base material which is a solid optical material from which the lens-shaped substrate (14) is formed, and of a predetermined additive.

To perform angle adjustment between a bulb and a radiation imaging device when a radioactive ray is emitted in a horizontal direction appropriately while suppressing costs.SOLUTION: A system 100 includes a bulb (radioactive ray irradiation unit) 23 for emitting a radioactive ray R. The system 100 includes the bulb 23 and a distance measuring unit (measuring unit) 29 for measuring a distance from an imaging device 1 for generating an image based on the radioactive ray R emitted from the bulb 23 and outputting distance information. The system 100 calculates angle information on the imaging device 1 for an irradiation direction of the radioactive ray R by the bulb 23 on the basis of the distance information measured by the distance measuring unit (measuring unit) 29.SELECTED DRAWING: Figure 5

A radiation imaging apparatus includes an image obtaining unit configured to obtain image data corresponding to incident radiation, and an image processing unit configured to perform a first bone density measurement based on image data obtained by the image obtaining unit with a first exposure field, and perform a second bone density measurement based on image data obtained by the image obtaining unit with a second exposure field narrower than the first exposure field.

The invention relates to the technical field of radiation imaging, and discloses a high-speed chopper wheel scanning imaging method, which comprises core structure configuration and imaging operation steps, and specifically comprises the following steps: core structure configuration: (a) preparing an annular chopper wheel by adopting a lead material with the density equal to or higher than that of a steel plate, four equidistant beam outlets are uniformly distributed in the peripheral direction of the chopper wheel, penetrate through the inner side and the outer side of the chopper wheel and are used for collimating X-rays; (b) an X light source is fixedly arranged in the annular central area of the chopper wheel, and a transmitting end faces a beam outlet; and (c) a detector is fixedly arranged outside the chopping wheel, and the receiving surface of the detector corresponds to the emergent direction of the beam outlet and is used for receiving X-ray energy reflected by the scanned object. According to the high-speed chopper wheel scanning imaging method, by optimizing the chopper wheel structure design and the imaging process, synchronous improvement of energy collection efficiency, imaging precision and scanning speed is achieved, the imaging algorithm is simplified, and the core pain point in the prior art is solved.

The invention provides a detector, a detector assembly, a radiation imaging system and a radiation imaging method. The detector comprises a semiconductor layer which is used for receiving incident photons and generating electron hole pairs; the electrode assemblies are arranged on the two sides of the semiconductor layer and used for applying bias voltage to form an electric field in the semiconductor layer so as to collect electric signals formed by the electron-hole pairs; the rear-end signal processing circuit comprises a signal shunting module, a counting branch and an integrating branch, and the signal shunting module is used for dividing the electric signal into two paths; the counting branch comprises a threshold comparator and a counter, the threshold comparator is used for comparing the amplitude of the input electric signals with a preset energy threshold, and the counter is used for counting the electric signals exceeding the preset energy threshold; and the integration branch comprises an integrator, and the integrator is used for accumulating the input electric signals.

A radiographic imaging apparatus includes a plurality of pixels configured to convert radiation to electrical signals and a control section configured to determine an image capturing condition based on the electrical signals converted by the pixels and to start image capturing.

The present disclosure provides a fusion system and method for radiation imaging and radioactive material monitoring of a baggage or package item. The fusion system includes a radiation imaging subsystem configured to operate in a pulsed mode to radiation image the baggage or package item, a radioactive material monitoring subsystem configured to operate in a pulsed mode to monitor whether the baggage or package item contains radioactive material, and a synchronization control subsystem in communication with both the radiation imaging subsystem and the radioactive material monitoring subsystem and configured to control the radiation imaging subsystem and the radioactive material monitoring subsystem to operate alternately.

This invention provides a proton imaging method and imaging device, applicable to the fields of proton imaging technology and signal processing technology, particularly in the field of particle radiation imaging technology. The method includes: determining a virtual source position based on an initial two-dimensional dose distribution of a proton beam acquired without an imaging object; obtaining multiple sub-beam propagation paths from the virtual source position to the multiple predetermined sub-beam center positions based on the virtual source position and multiple predetermined sub-beam center positions on a predetermined plane; obtaining sub-beam data pairs corresponding to the sub-beam propagation paths and the two-dimensional dose distribution based on the two-dimensional dose distribution and the lateral distribution components determined along the sub-beam propagation paths; obtaining multiple water equivalent path lengths corresponding to at least one projection angle through an iterative algorithm based on the multiple sub-beam data pairs corresponding to at least one projection angle; and performing image reconstruction based on the multiple water equivalent path lengths corresponding to at least one projection angle to obtain a target image of the imaging object.

The present disclosure provides a calibration piece, comprising: a base body; at least one calibration block, wherein each calibration block is detachably connected with the base body; wherein the shape and / or size of at least one of the base body and the calibration block is determined in advance according to a scanning object of a radiation imaging device to be calibrated, so that the calibration piece has a substantially consistent shape with the scanning object, and the size of the calibration piece has a predetermined proportional relationship with the size of the scanning object. The present disclosure also provides a calibration system and a calibration method.

The invention relates to an optical imaging device with soft X-ray radiation imaging capability and a preparation method thereof. The optical imaging device comprises an optical lens, a scintillation film layer and an imaging sensor, wherein the scintillation film layer is plated on the outer side of the incident surface of the optical lens and is used for converting incident soft X-rays into visible light in situ; the scintillation thin film layer comprises a doped yttrium aluminum garnet material; the optical lens is used for amplifying or reducing the visible light converted by the scintillation thin film layer for imaging; and the imaging sensor is used for receiving the visible light imaged by the optical lens so as to obtain a spatial distribution image of the soft X-ray. The invention has the beneficial effects that the scintillation film is directly plated at the foremost end of the lens, so that soft X-ray in-situ conversion is realized, optical signal spatial diffusion caused by an independent scintillation screen is thoroughly avoided, the imaging resolution is remarkably improved, the optical path is shortened, and the signal loss is reduced.

The invention provides a radiation imaging test system and method. The test system comprises an adjusting plate assembly, an imaging device, a detection device, a base and a placing plate which is arranged on the base and used for placing radiation imaging equipment. A laser positioning mark is arranged on the placing plate and receives laser output by the laser device; the adjusting plate assembly is fixed on the base through a bracket and comprises two or more adjusting plates and radioactive sources fixed on the adjusting plates through hoops; the imaging device is arranged on the placing plate and is used for imaging the adjusting plate assembly; the detection device measures the first distance between the laser positioning mark and the laser, and provides data support for calibration of the relative distance between the radioactive source and the imaging device. The distance between the imaging device and the radioactive source on the test bed can be adjusted, and clearer and more accurate images can be obtained under the condition that the intensity of the radioactive source is high or the imaging environment is complex.

Disclosed is a radiation protection device provided for a radiographic imaging apparatus to shield radiation from being irradiated to a body side of a patient other than an imaging target, and a radiographic imaging apparatus including the same. The radiation protection device includes a fixing unit fixed to an arm unit of a radiographic imaging apparatus; an elevation unit coupled to the fixing unit to be movable along a first direction; a connecting unit coupled to the elevation unit to be rotatable in a second direction different from the first direction; and a shielding unit provided on one side of the connecting unit to shield radiation, and a radiographic imaging apparatus including the radiation protection device.

The present application discloses an image navigation method and system for a surgical microscope. The method comprises: fixing a surgical subject and a marker, and performing radiation imaging on the surgical subject and the marker to obtain a three-dimensional structural digital image; locating the marker via the image, establishing a coordinate system, and obtaining relative locations of a target affected part and the marker; setting an entry point and a path guide point of an instrument on the image to generate a navigation path, and transmitting data to a media signal processing apparatus; placing the target affected part and the marker in a field of view of a microscope, and transmitting an image in the field of view to the media signal processing apparatus; identifying, by the media signal processing apparatus, the marker to generate a matched three-dimensional space; and superposing a path image of corresponding coordinates on the image in the field of view according to the three-dimensional space to implement real-time navigation. The system comprises the microscope, the media signal processing apparatus, and the marker. The microscope comprises a microscope body and an image augmentation apparatus. The present application can precisely locate an entry point and an entry path of a surgical instrument, to guide a doctor or a related operator to complete a dental diagnosis and treatment surgery, thus improving the surgical precision.

A radiation detector manufacturing method is provided. The method includes: preparing a structure including a support base, a flexible base member arranged on the support base and having a principal surface including a pixel region in which a plurality of pixels are arranged, a scintillator arranged so as to cover the pixel region, and a protective layer arranged so as to cover the scintillator; and removing the support base from the flexible base member. The principal surface includes a peripheral region not covered with the protective layer. The method further includes, before the removing, arranging a reinforcing member in contact with the peripheral region, in a position overlapping the peripheral region and not overlapping the scintillator, in orthogonal projection to the principal surface.

A radiation imaging apparatus includes a plurality of pixels, each including a conversion element configured to convert radiation or light into a charge and a switch element, is arranged in a matrix, a driving unit configured to output driving signals that drive the switch elements, and a reading unit configured to read a charge from a pixel to which a driving signal is supplied and generate an image data signal, wherein a first driving signal is output to a first driving line and a second driving signal is output to a second driving line adjacent to the first driving line by shifting timings to reduce line noise along the driving lines, and wherein an image data signal is generated by totaling a first charge read from a pixel by outputting the first driving signal and a second charge read from a pixel by outputting the second driving signal.

To improve convenience for an engineer with a simple configuration and reduce a burden in selecting a lighting field in imaging using a detection device mounted with an automatic exposure control (AEC) function inside.SOLUTION: A radiographic apparatus includes: display control means for displaying, in a display unit, a candidate of a lighting field for executing automatic exposure control in a radiation detection device for picking up a radiation image by detecting a radiation; and acquisition means for acquiring information at least including information on the shape of the radiation detection device, the number of arrangements of the lighting field in the radiation detection device, a site to be imaged, and past imaging information. The display control means displays, in the display unit, the candidate of the lighting field determined on the basis of the information acquired by the acquisition means.SELECTED DRAWING: Figure 1

A radiation imaging apparatus according to the present disclosure comprises: a scintillator that converts radiation into visible light; a photoelectric conversion element that converts the visible light into a first electric signal; and a signal processing unit that includes a first counter circuit which counts the first electric signal and a second counter circuit which counts a second electric signal output from the first counter circuit. The second counter circuit includes a plurality of counter circuits and is configured so as to count the second electric signal output to a counter circuit selected, from among the plurality of counter circuits, using a count value from the first counter circuit.

The invention relates to the field of robots, in particular to an intelligent collaborative robot system for radioscopy and a control method thereof, and the method comprises the steps: obtaining three-dimensional point cloud data of a target object, constructing an object surface three-dimensional model, and extracting surface contour features from the object surface three-dimensional model; forming an initial action path of the robot according to radiation inspection expected target spot distribution and surface contour features of the target object; according to regional organization characteristics, calibrating potential artifact sub-regions distributed by expected target spots of radioexamination, so as to segment the initial action path into a plurality of action sub-paths; and predicting radiation imaging interference according to the dynamic characteristics of the target object when the robot moves along the action sub-path so as to correct the driving parameters of the robot to the radiation inspection end. The action path of the robot can be planned through three-dimensional point cloud modeling, so that the robot cooperatively drives the radiographic inspection equipment to align at the target part for radiation imaging, tissue areas possibly generating artifacts in the target part are accurately avoided, and the imaging definition is improved.

The utility model provides a kind of test equipment of radiation angle of ray source, applied to radiation imaging technical field, comprising: detector clamping device, control device and shielding device, detector clamping device is structured as can rotate within preset angle, suitable for clamping detector;Control device is connected with detector clamping device communication;Shielding device is set between detector clamping device and control device. Detector clamping device can rotate within preset angle can drive detector to any position within preset angle, whereby, detector can record the radiation dose of the radiation of to-be-measured ray source to any position within preset angle range, to calculate the radiation angle of the ray source to be tested according to radiation angle algorithm. The efficiency of the detector clamping device driving the detector to collect radiation dose is high, and the accuracy is high. The shielding device is set between the detector clamping device and the control device to shield the radiation damage of the rays to the detection personnel.