Abstract: Methods and systems for reading out a pixel array are provided. An example system may be configured to represent the activity of at least two pixels in the array as at least two digital signals. Further, the example system may be configured to dynamically aggregate the at least two digital signals into one representative analog signal corresponding to the activity of the at least two pixels.

Abstract: This application provides an image processing method and an electronic device. The method includes: obtaining a first image and a second image that are acquired at a same acquisition moment, where the first image is obtained by using a first photographing unit to acquire an image in a first acquisition region, and the second image is obtained by using a second photographing unit to acquire an image in a second acquisition region, where a parameter of the first photographing unit and a parameter of the second photographing unit are the same, and there is an overlapping acquisition region between the first acquisition region and the second acquisition region; and determining, according to the first image and the second image, whether the first photographing unit and the second photographing unit are normal.

Abstract: The disclosure relates to a system and method for correcting PET image data. PET image data of a first part of a subject may be obtained. CT image data of a second part of the subject may be obtained. The first part may include the second part. PET voxel data of the first part may be obtained based on the PET image data of the first part. A relationship between the CT image data and PET voxel data of the second part may be determined. CT image data of a third part of the subject may be determined based on the relationship and PET voxel data of the third part. The first part may include the third part. An attenuation map may be determined based on the CT image data of the second part and the third part. The PET image data of the first part may be corrected based on the attenuation map.

Abstract: Provided is a radiographic imaging apparatus including a photon-counting detector that prevents variation in count rate performance by using self-heating of a photon-counting circuit, and improves accuracy in detecting photons. The photon-counting detector is provided with a semiconductor layer configured to generate electrical charge upon receipt of photons of radiation, a photon-counting circuit configured to read current values from pixel electrodes formed on one of the semiconductor surfaces, and a heat amount compensator configured to control an amount of heat of the photon-counting circuit according to a count rate of the photon-counting circuit. The heat amount compensator is activated when the count rate is low so that the amount of heat delivered from the photon-counting circuit when the count is low becomes nearly equal to the amount of heat delivered from the photon-counting circuit when the count rate is high.

Abstract: Techniques that facilitate overlaying and integrating computer aided design drawings with fluid models are presented. For example, a system includes a modeling component, a machine learning component, and a graphical user interface component. The modeling component generates a three-dimensional model of a mechanical device based on a library of stored data elements. The machine learning component predicts one or more characteristics of the mechanical device based on a machine learning process associated with the three-dimensional model. The machine learning component also generates physics modeling data of the mechanical device based on the one or more characteristics of the mechanical device. The graphical user interface component generates, for a display device, a graphical user interface that presents the three-dimensional model and renders the physics modeling data on the three-dimensional model.

Abstract: The present disclosure relates to a sunlight converting device including a wavelength converting film using a wavelength conversion material such as a quantum dot or an inorganic phosphor. More particularly, the present disclosure provides a sunlight converting device including a wavelength converting film using a wavelength conversion material, which can optimize plant growth and provide improved plant quality by installing a wavelength converting film on which a wavelength conversion material is applied so as to be converted into a predetermined wavelength and output to a greenhouse, (glasshouse), a vinyl house or a microalga culture facility, varying the sunlight irradiation area of the wavelength converting film, and supplying light of various wavelengths required for species of plant including microalgae or growth cycles thereof.

Abstract: Anatomic range planning is provided in positron emission tomography (PET). The user indicates one or more ranges on an image of a patient based on anatomy. Rather than planning by bed position, the planning is based on the anatomy of the patient without reference to the length of the PET detector. The user interface for PET examination avoids overlapping boxes and other confusion based on bed position. Different anatomical ranges may be assigned different PET parameters, such as reconstruction parameters. A processor may automatically alter the examination (e.g., by extending the detection range beyond the region of interest or by increasing duration at an end position) to account for the sensitivity profile since the anatomical region of interest is known. Anatomical region specific directions may be included as part of planning, aiding in performing different protocols for different anatomical ranges.

Abstract: A photodetector includes a Geiger mode avalanche photodiode, which includes a body of semiconductor material, which is delimited by a front surface. The avalanche photodiode further includes: a cathode region having a first type of conductivity, which forms the front surface; and an anode region having a second type of conductivity, which extends in the cathode region starting from the front surface. The photodetector further includes: a dielectric region, arranged on the front surface; a quenching resistor, which extends on the dielectric region, is electrically connected to the anode region, and is laterally spaced apart with respect to the anode region; and an optical-isolation region, which extends through the dielectric region and laterally delimits a portion of the dielectric region, the anode region extending underneath the portion of the dielectric region, the optical-isolation region being moreover interposed between the portion of the dielectric region and the quenching resistor.

Abstract: Anatomic range planning is provided in positron emission tomography (PET). The user indicates one or more ranges on an image of a patient based on anatomy. Rather than planning by bed position, the planning is based on the anatomy of the patient without reference to the length of the PET detector. The user interface for PET examination avoids overlapping boxes and other confusion based on bed position. Different anatomical ranges may be assigned different PET parameters, such as reconstruction parameters. A processor may automatically alter the examination (e.g., by extending the detection range beyond the region of interest or by increasing duration at an end position) to account for the sensitivity profile since the anatomical region of interest is known. Anatomical region specific directions may be included as part of planning, aiding in performing different protocols for different anatomical ranges.

Abstract: A coincidence resolving time readout circuit is described. An analog SiPM sensor for detecting photons and generating an SIPM output signal is provided. An ADC is configured to provide multiple threshold values for converting the analogue SiPM output signal to digital values. A time to digital converter configured to receive multiple digital values from the ADC and timestamp the digital values.

Abstract: Methods, devices and systems for correcting a count loss in a Position Emission Computed Tomography (PET) system are provided. In one aspect, a method includes: constructing a virtual system including a plurality of virtual crystals, determining, for each of virtual Lines of Response (LORs) in the virtual system, a plurality of real LORs corresponding to the virtual LOR in the PET system, each of the real LORs corresponding to a scanning state of the PET system with a continuous incremental scanning mode, determining a count loss correction factor of the corresponding real LOR in each of the scanning states, determining a count loss correction factor of the virtual LOR according to the determined count loss correction factors of the plurality of real LORs corresponding to the virtual LOR, and performing count loss correction for the virtual LOR according to the determined count loss correction factor of the virtual LOR.

Abstract: The present disclosure provides a positron emission tomography (PET) system and an image reconstruction method thereof. The PET system may include a plurality of annular detector units arranged along an axial direction. Each of the detector units may generate a plurality of single event counts. The PET system may further include a plurality of coincidence logic circuits connected to one or more of the detector units. The coincidence logic circuits may be configured to count coincidence events. Single event data generated by each of the detector units may be transmitted to the corresponding coincidence logic circuit. The plurality of coincidence logic circuits may synchronically generate coincidence counts relating to the plurality of detector units.

Abstract: The invention relates to a PET imaging device for observing the brain, characterised by comprising a structure with a shape that is capable of accommodating a human head, having independent gamma-ray detection modules, said detection modules having continuous scintillation crystals with a polygonal main section, wherein all together the detection modules form a hollow three-dimensional structure that can surround the head, and with said three-dimensional structure being elongated and having a main axis in the direction corresponding to the forehead-nape direction and a shorter axis in the direction corresponding to the straight line joining the ears, and with the adjacent scintillation crystals fitting together laterally in a precise manner along their entire thickness, forming a mosaic-like structure, i.e. without leaving gaps and without overlapping with one another.

Abstract: Methods, devices and apparatus for reconstructing an image are provided. In an aspect, a method includes: obtaining coincidence events detected by crystal pairs in a detector of a PET device by scanning a phantom, reconstructing a phantom image according to the coincidence events, and obtaining a time calibration amount of each of crystals in the detector by determining a crystal based source position deviation and a crystal based source time difference of a crystal pair including the crystal according to the phantom image, determining a time difference of the crystal pair according to respective time differences for the crystal pair detecting a plurality of coincidence events, pre-calibrating the time difference of the crystal pair with the crystal based source time difference, and obtaining the time calibration amount of the crystal according to the pre-calibrated time difference of the crystal pair.

Abstract: An imaging detector is provided that includes a continuous NaI crystal, a glass plate, an array of SiPMs, and an array of concentrators. The continuous NaI crystal defines a reception side and a detection side. The glass plate is disposed on the detection side of the continuous NaI crystal, and is interposed between the detection side of the continuous NaI crystal and the array. The array of concentrators corresponds to the array of SiPMs, and is interposed between the array of SiPMs and the glass plate. Each concentrator has a reception side opening that is larger than a detection side opening, with the detection side opening disposed proximate to a corresponding SiPM.

Abstract: Systems and methods are provided for evaluating tissue for abnormal glucose uptake within a region of interest within a patient. A PET scanner obtains PET imagery including the region of interest and at least part of the liver. An SUV calculator calculates a first set of SUVs representing the region of interest and a second set SUVs representing the liver from the set of at least one PET image. A standardization component calculates a correction value as a function of the second set of SUVs and applies the correction value to either a decision threshold associated with the region of interest or the first set of SUVs. A diagnosis component compares the first set of SUVs to the decision threshold to determine if the glucose uptake within the region of interest is abnormal. A display provides the determination to a user.

Abstract: A diagnostic system for monitoring a status of a CT system includes at least one radiation detector configured to monitor a CT component and generate signals representing measurement data associated with the CT component. The system also includes a diagnostic computer device in communication with the detector. The device is configured to receive an electrical signal from the detector and identify a first frequency in the electrical signal. The device is also configured to compare the first frequency in the electrical signal to a first reference frequency stored in memory. The first reference frequency is at least partially indicative of a first mechanical status of the CT component. The device is further configured to determine that the first frequency in the electrical signal is substantially similar to the first reference frequency and, in response, determine that the CT system has the first mechanical status.

Abstract: A Time-of-Flight Positron Emission Tomography (TOF-PET) tomography insert. The insert includes detection modules and photoelectric converters. Each of the photoelectric converters is connected to an electronic signal processing circuit protected by a housing and comprising an electronic signal processing unit and a computer operable to control the electronic signal processing unit and to reconstruct and store images. Each of the detection modules further includes a liquid marker visible in a magnetic resonance image. The insert also includes a liquid marker device visible in the magnetic resonance image. Adjacent detection modules are detachably connected via coupling elements.

Abstract: The present disclosure relates to systems and methods for reconstructing a PET image. The systems may execute the methods to acquire PET data of a subject. The PET data may include position information of a plurality of coincident events. The plurality of coincident events may include scattering events and random events. The systems may execute the methods to select a portion of the PET data from the PET data based on the position information. The systems may execute the methods to reconstruct a first preliminary image of the subject based on the selected portion of the PET data, and project the first preliminary image. The systems may execute the methods to may determine, based on the PET data and the projection of the first preliminary image, preliminary correction data relating to the scattering events and the random events.

Abstract: Various embodiments of the present disclosure may include an imaging system that allows for the transfer of high dynamic range (HDR) radiometric thermal images over a low bitrate interface. The image system may capture HDR images and output the HDR images over a communications interface to be processed. The HDR images may be converted to low dynamic range (LDR) images by a transfer function in order to be sent over the low bitrate interface. An inverse transfer function may also be sent along with the LDR image. Once the LDR image has been sent over the low bitrate interface, the LDR image may be converted to a reconstructed image using the inverse transfer function.

Abstract: Various embodiments of the present disclosure may include an imaging system that allows for the transfer of high dynamic range (HDR) radiometric thermal images over a low bitrate interface. The image system may capture HDR images and output the HDR images over a communications interface to be processed. The HDR images may be converted to low dynamic range (LDR) images by a transfer function in order to be sent over the low bitrate interface. An inverse transfer function may also be sent along with the LDR image. Once the LDR image has been sent over the low bitrate interface, the LDR image may be converted to a reconstructed image using the inverse transfer function.

Abstract: A noncontact temperature sensing device receives radiative emissions from a sensed object to measure radiant heat flux and computes a temperature using multiple photodiode sensors, or elements, each sensitive to a different bandwidth of near IR light. The device samples a fluctuating heat source such as a flame or explosion at a fast sampling frequency, and compares corresponding or simultaneous readings in each bandwidth for computing a ratio of the respective bands and determining a temperature via ratio pyrometry. Multiple sensors of adjacent bands each receive corresponding readings of near IR emissions, perform fast, concurrent sampling to mitigate inconsistencies of heat source fluctuations, and compute a temperature based on a ratio between the sampled readings of the different bands. Near IR detection allows common and inexpensive photodiodes to be employed, and the photoelectric rather than thermoelectric sensing allows faster sampling and at a greater distance from the sensed heat source.

Abstract: The invention comprises a method or apparatus for tomographically imaging a sample, such as a tumor of a patient, using positively charged particles. Position, energy, and/or vectors of the positively charged particles are determined using a plurality of scintillators, such as layers of chemically distinct scintillators where each chemically distinct scintillator emits photons of differing wavelengths upon energy transfer from the positively charged particles. Knowledge of position of a given scintillator type and a color of the emitted photon from the scintillator type allows a determination of residual energy of the charged particle energy in a scintillator detector. Optionally, a two-dimensional detector array additionally yields x/y-plane information, coupled with the z-axis energy information, about state of the positively charged particles.

Abstract: Methods, devices, and apparatus, including computer programs encoded on a computer storage medium for reconstructing image are provided. In one aspect, a method of reconstructing image includes obtaining scanning data for a subject in a continuous incremental scanning of medical equipment including real crystals for detection, associating each of the real crystals with one or more virtual crystals in a virtual scanning system, determining delay random coincidence data of two virtual crystals connected by a response line in the virtual scanning system, obtaining random coincidence data by denoising the delay random coincidence data based on crystal receiving efficiency for each of the real crystals, and reconstructing an image with the scanning data by taking the random coincidence data into account.

Abstract: Material analysis device (100) comprising a neutron generator (10) for emitting neutrons towards a material to be analysed in pulsed mode; an alpha particle detector (13) for locating the neutrons emitted in a given solid angle by detecting alpha particles associated with these neutrons; at least one gamma ray detector (14) for measuring energy of gamma photons generated by interaction of the neutrons emitted in the given solid angle with the material to be analysed; at least two Compton cameras (15), each for measuring energy of the gamma photons generated by interaction of the neutrons with the material to be analysed and for calculating an incidence cone of these gamma photos; and an electronic circuit adapted for three-dimensionally mapping the presence of at least one chemical element of interest in the material to be analysed based on data provided by the alpha particle detector (13), the gamma ray detector (14) and the Compton cameras (15).

Abstract: The present disclosure relates to a method and system for reconstructing an Emission Computed Tomography (ECT) image based on locally adaptive gating. ECT projection data relating to a subject may be obtained. The ECT projection data may correspond to a plurality of voxels in a reconstructed image domain. The ECT projection data may be divided into a plurality of frames. A plurality of intermediate images may be reconstructed according to the plurality of frames. A plurality of motion amplitudes of the plurality of voxels may be obtained based on the plurality of intermediate images. A plurality of gate numbers may be determined for the plurality of voxels based on the plurality of motion amplitudes of the plurality of voxels. A plurality of ECT images may be reconstructed based on the ECT projection data and the plurality of gate numbers.

Abstract: A hybrid tomograph that includes a chamber for examining an object, a TOF-PET tomograph and an MRI tomograph. The MRI tomograph has a magnet for producing a magnetic field and a receiving-transmitting coil. The TOF-PET tomograph has polymer scintillation strips to transmit scintillation photons outside the magnet of the MRI tomograph and outside the chamber of the hybrid TOF-PET/MRI tomograph. The polymer scintillation strips are arranged circumferentially inside the magnetic field produced by the magnet of the MRI tomograph. Photoelectric converters for converting light signals from the polymer scintillation strips to electrical signals are arranged outside the magnet of the MRI tomograph and outside the chamber of the hybrid TOF-PET/MRI tomograph.

Abstract: Methods, devices, and systems for reconstructing Positron Emission Computed Tomography (PET) images are provided. In one aspect, a method includes: for each of coincidence events including at least one true coincidence event and at least one scattering coincidence event, determining an emission path of the coincidence event according to photon information of the coincidence event, the photon information of the coincidence event including time data, position data, and angle data of each of two photons involved in the coincidence event, determining an annihilation position of the coincidence event according to the emission path of the coincidence event and the time data of each of the two photons involved in the coincidence event, and reconstructing a PET image according to the annihilation position, the emission path and the photon information of each of the coincidence events.

Abstract: A scintillation crystal can include Ln(1-y)REyX3, wherein Ln represents a rare earth element, RE represents a different rare earth element, y has a value in a range of 0 to 1, and X represents a halogen. In an embodiment, RE is Ce, and the scintillation crystal is doped with Sr, Ba, or a mixture thereof at a concentration of at least approximately 0.0002 wt. %. In another embodiment, the scintillation crystal can have unexpectedly improved linearity and unexpectedly improved energy resolution properties. In a further embodiment, a radiation detection system can include the scintillation crystal, a photosensor, and an electronics device. Such a radiation detection system can be useful in a variety of radiation imaging applications.

Abstract: A method is for determining a respiratory phase is based on receiving tomographic raw data on the basis of a spiral scan of an examination region of a patient, the examination region including at least part of the torso and/or abdomen of the patient. Slice image pairs are reconstructed on the basis of the tomographic raw data, wherein a slice image pair includes two slice images having a first interval at an identical position along a predefined axis. The position refers to the position of the examination region. This enables determining of differences between reference positions of the examination region in two slice images respectively of a slice image pair and determining a respiratory phase on the basis of the differences. The differences correspond in each case to the change in the anatomy of the examination region, wherein this change occurs during the first interval.

Abstract: A matching transformation is determined for matching a patient image set of images of an anatomical body structure of a patient with an atlas image set of images of a general anatomical structure including anatomical atlas elements. Atlas spatial information containing spatial information on the general anatomical structure, and element representation information are obtained. The element representation information describes representation data sets which contain information on representations of the plurality of atlas elements in the atlas images to be determined are obtained, and also describes a determination rule for determining respective representation data sets for respective atlas elements in accordance with different respective parameter sets. Patient data is acquired by acquiring the patient image set and the parameter sets which are respectively associated with the images of the patient image set.

Abstract: The present disclosure provides a method including memorizing a sequence of high-resolution images of a scene in a buffer, obtaining radiation emission readings from one or more photo detectors, detecting a suspected flash event based on processing the radiation emission readings from the one or more photo detectors. The method may further include that the detecting occurs at a first instant, retrieving from the buffer high-resolution images of the scene including at least one image that was captured prior to said first instant, and processing the high-resolution images of the scene to determine a geolocation of the suspected flash event.

Abstract: A method of reconstructing an image that may include in at least one example: determining coincidence events based on detection by a detector during a continuous incremental scanning; determining an axial position for each of the coincidence events; storing data for each of the coincidence events including the axial position in a list mode; sorting the data for each of the coincidence events according to a spatial order; and obtaining an image by performing iterative reconstruction with the sorted data for each of the coincidence events.

Abstract: A radiation image forming apparatus includes a detection unit including a plurality of Compton cameras. Each of the plurality of Compton cameras including a radiation detection device that includes a plurality of pixels, each configured to detect an electron generated by the track of a recoil electron generated by Compton scattering, and is configured to output a detection signal configured to specify the position of a pixel that has detected the electron and a time when the pixel has detected the electron, and a detection module configured to detect the incident position of scattered ? rays generated by the Compton scattering. The plurality of the Compton cameras arranged annularly to surround a region in which a specimen is placed.

Abstract: Methods and systems are provided for cooling systems for imaging systems. In one embodiment, a manifold assembly for an imaging system comprises: an intake manifold and a return manifold formed by a plurality of unitary sections, the intake manifold and return manifold positioned adjacent to each other and separated by a shared wall; and a plurality of nozzles, with each nozzle of the plurality of nozzles formed by a corresponding section of the plurality of unitary sections. In this way, an assembly difficulty, expense, and/or manufacturing time of the manifold assembly may be decreased.

Abstract: A system and method of a PET imaging are provided. According to an example, a detector, a movement control module, a power control module and a reconstructing computer may be connected to a switch in a form of a star-shaped network topology. The detector may include M*N detector units distributed in an annular structure, each detector unit may be allocated with an IP address, M detector units are evenly distributed on each circumferential direction of the annular structure, and N detector units are evenly distributed on each axial direction of the annular structure. Each of the detector units may transmit a set of acquired data to the reconstructing computer through the switch via a network bus; and the set of data may include location information, acquiring time information and IP address.

Abstract: An apparatus comprising a radiation source, coincident positron emission detectors configured to detect coincident positron annihilation emissions originating within a coordinate system, and a controller coupled to the radiation source and the coincident positron emission detectors, the controller configured to identify coincident positron annihilation emission paths intersecting one or more volumes in the coordinate system and align the radiation source along an identified coincident positron annihilation emission path.

Abstract: In an irradiation method, an irradiation plan for irradiating a target volume in phases of motion is provided to a particle therapy system. The particle therapy system comprises a beam delivery device operable to scan a pencil beam of particles over the target volume. The irradiation plan comprises a first field for irradiating the target volume in a first phase of motion and a second field for irradiating the target volume in a second phase of motion. Motion of a tracking device or change of other physical measurement value is monitored and signals continuously indicating the current position of the tracking device or measurement value are provided to the particle therapy system. A pencil beam of particles is applied to the target volume according to the irradiation plan and signals from the tracking system continuously indicating current positions of the target volume. Dosage delivered to the target volume is monitored.

Abstract: Disclosed is a measurement method performed by a Computed Tomography, CT, system. The CT system includes an x-ray source (60) and an x-ray detector (50) array of photon counting edge-on detectors (5), wherein each photon counting edge-on detector has a number of depth-segments, also referred to as detector elements, arranged at different spatial locations in the direction of incoming x-rays (45). The method includes to apply a time offset measurement scheme that provides a time offset between measurement periods for at least two different detector elements located at different depths, wherein the time offset is chosen so that at least two measurement periods at least partially overlaps in time. Disclosed is also a corresponding CT system (10), a control unit for a CT system and a measurement circuit for a CT system. A computer program (225) controlling a CT system is also disclosed. The disclosed technology provides for a higher sampling frequency in the angular direction (55).

Abstract: A radiation detector comprises a first scintillator having a first peak wavelength and a second scintillator positioned on the first scintillator. The second scintillator has a second peak wavelength different from the first peak wavelength. A plurality of photon detectors are provided. The first scintillator is positioned over and contacts each of the plurality of photon detectors. The plurality of photon detectors include first detectors and second detectors. The second detectors differ from the first detectors in doping profile, pn junction depth, or front-versus-backside illumination geometry. The first detectors are more sensitive to the first peak wavelength than the second peak wavelength. The second detectors are more sensitive to the second peak wavelength than the first detectors.

Abstract: A radiation detector including a scintillator; a wavelength shifting portion to cause a wavelength shift in photons emitted by the scintillator; and a photodetector optically coupled to the scintillator to receive the wavelength shifted photons.

Abstract: High sensitivity and high spatial resolution detection modules are provided that that can be built into an array or incorporated into PET or other types of gamma ray detectors and imagers. Each detection module has a scintillation detector block, light detector and optional light guide. The detector block may be formed of a first scintillation layer material that has a fast decay constant and high light output (e.g. LYSO) and a second scintillation layer material with a slow decay constant and a lower light output (e.g. BGO) with a first layer to second layer array pitch ratio of approximately 2:3. Due to the large difference of light output and decay time of LYSO and BGO signals, three different types of events (LYSO, BGO and CLCS) can be identified with high accuracy.

Abstract: There is provided a detector component for an X-ray or gamma ray detector, the detector component comprising: a scintillating crystal having a plurality of scintillation crystal pixels and a photodetector. Each scintillating crystal pixel has one or more light exit faces. The photodetector is associated with at least one of the light exit faces of each scintillating crystal pixel, wherein a first and a second scintillating crystal pixel are arranged adjacent to one another, wherein a X-ray or gamma ray interaction with the first scintillating crystal pixel causes the generation of at least one photon, and optical cross talk of the at least one generated photon occurs between the first and the second scintillating crystal pixel, such that the X-ray or gamma ray interaction within the first scintillating crystal pixel is detected in use at the photodetector associated with a light exit face of the second scintillating crystal pixel.

Abstract: An image processing apparatus includes a processor that acquires medical image data and performs noise reduction in at least two of three different directions in the medical image data in a predetermined order.

Abstract: A timing apparatus and method for a radiation detection, measurement, identification, and imaging system are disclosed. The apparatus comprises high-energy photon detectors, a light pulse signal generator and an optical fiber. Each high-energy photon detector comprises a scintillation crystal and an optical-to-electrical conversion multiplying device. The high-energy photon detectors are all provided with light transmission holes. Light pulse signals are propagated to the scintillation crystals through the light transmission holes, then propagated to the surfaces of the optical-to-electrical conversion multiplying devices through the scintillation crystals, converted and multiplied by the optical-to-electrical conversion multiplying devices, and processed and read by an electronic circuit.

Abstract: A detector for a Compton camera includes a first radiation scattering layer; a second radiation scattering layer; and a radiation absorption layer disposed between the first radiation scattering layer and the second radiation scattering layer. The first radiation scattering layer and the radiation absorption layer configure at least a part of a first detector, and the second radiation scattering layer and the radiation absorption layer configure at least a part of a second detector.

Abstract: The present invention is a scintillator panel including: a substrate, a barrier rib formed on the substrate, and a scintillator layer containing a phosphor filling cells divided by the barrier rib, wherein the scintillator layer is formed of a plurality of layers having different phosphor concentrations. The present invention provides a scintillator panel in which formation of the barrier rib makes it possible to improve image clarity and obtain a sufficient amount of emitted light.

Abstract: A method of scanner correction includes obtaining a first photopeak location for a first crystal in a detector. Image data is received from the first crystal. The first crystal generates the image data during a current imaging procedure. The image data is processed using the first photopeak location. A second photopeak location is determined for the first crystal from the image data. A difference between the first photopeak location and the second photopeak location of the first crystal is determined and the image data is reprocessed using the second photopeak location when the difference between the first photopeak location and the second photopeak location exceeds a predetermined threshold. An image is generated using the image data.

Abstract: A method of calibrating time in a Positron Emission Computed Tomography (PET) device includes determining a rising edge slope of an electrical signal corresponding to a photon which is detected by a detector of the PET device when the PET device is used to scan a part of a subject to be examined. The method includes determining a time shift corresponding to the rising edge slope based on a correspondence between the rising edge slope and the time shift; calibrating time information of the photon based on the time shift; and reconstructing a PET image of the part of the subject to be examined based on the calibrated time information of the photon.

Abstract: A fluorescence detection device comprises: a plurality of light sources that apply an excitation light from an outside of a living body toward fluorescent dye previously injected into the living body; and a plurality of detectors that detect fluorescence emitted from the fluorescent dye by the excitation light, and output the detected fluorescence as an electric signal. The plurality of light sources and the plurality of detectors are arranged in at least one line. At least one detector is placed between two light sources, and at least one light source is placed between two detectors.