Abstract: A detector of a high-energy photon, the detector including a photodetector and a detection medium that is intended to absorb a high-energy photon while generating ionization electrons and photons along a luminous phenomenon, the electrons and photons being detected by the photodetector. The detection medium is formed of molecules, having a heavy atom with an atomic number greater than or equal to 72, such that the detection medium is liquid under the operating conditions of the detector. The detector also includes a device for diverting the ionization electrons that are generated by the absorbed photon and moreover includes a collector that collects charges in order to determine the time for diverting the electrons to the charge-collector on the basis of a triggering time that corresponds to the detection of the luminous phenomenon by the photodetector.

Abstract: Embodiments relate to detector imaging arrays with scintillators (e.g., scintillating phosphor screens) mounted to imaging arrays or radiographic detectors using the same. For example, the detector imaging arrays can include a scintillator, an imaging array comprising imaging pixels, where each imaging pixel comprises at least one readout element and one photosensor; and a first dielectric layer formed between the scintillator and the imaging layer, wherein the dielectric constant of the insulating layer is very low. Embodiments according to the application can include a second dielectric layer formed over at least a portion of the non-photosensitive regions of the array and/or a first dielectric layer, each with a dielectric constant.

Abstract: Photomultipliers are disclosed which comprise circuitry for detecting photo electric events and generating short digital pulses in response. In one embodiment, the photomultipliers comprise solid state photomultipliers having an array of microcells. The microcells, in one embodiment, in response to incident photons, generate a digital pulse signal having a duration of about 2 ns or less.

Abstract: A radiation detector is disclosed that includes a scintillation crystal and a plurality of photodetectors positioned to detect low-energy scintillation photons generated within the scintillation crystal. The scintillation crystals are processed using subsurface laser engraving to generate point-like defects within the crystal to alter the path of the scintillation photons. In one embodiment, the defects define a plurality of boundaries within a monolithic crystal to delineate individual detector elements. In another embodiment, the defects define a depth-of-interaction boundary that varies longitudinally to vary the amount of light shared by neighboring portions of the crystal. In another embodiment the defects are evenly distributed to reduce the lateral spread of light from a scintillation event. Two or more of these different aspects may be combined in a single scintillation crystal.

Abstract: A radiation detection apparatus according to an embodiment includes: a scintillator including a fluorescent material to convert radiation to visible radiation photon; a photon detection device array having a plurality of cells each of which includes a photon detection device to detect visible radiation photon emitted from a fluorescent material in the scintillator and convert the visible radiation photon to an electric signal; and a plurality of lenses provided on cells respectively in association with the cells to cause the visible radiation photon to be incident on the photon detection device in an associated cell.

Abstract: A radiation image imaging apparatus includes: a sensor board in which a plurality of photoelectric conversion elements are arranged two-dimensionally; and a scintillator which converts an incident radiation into light and irradiates the light onto the photoelectric conversion elements, and a protection layer having an anti-static function is provided between the sensor board and the scintillator, and an anti-static layer having conductivity or an anti-static function is provided on a surface of the sensor board, the surface being opposite with a side facing the scintillator.

Abstract: The present invention provides a fast-neutron detector, comprising: a plastic scintillator array which includes at least one plastic scintillator unit, wherein sidewall surfaces of each plastic scintillator unit are covered or coated with a neutron-sensitive coating film. The fast-neutron detector based on such film-coated plastic scintillators according to the present invention advantageously addresses the mutual competition problem between a moderated volume and a measured volume in the prior art and can obtain a higher fast-neutron detecting efficiency.

Abstract: A photosensor testing apparatus can be used to test photosensors. A light module can produce simulating light that corresponds to scintillating light of a scintillator or a derivative of the scintillating light. A photosensor under test can produce an output that can be analyzed. A particular photosensor can be determined to have a higher quantum efficiency, a higher signal-to-noise ratio, or another performance criterion and selected for use in a radiation detection apparatus having the scintillator that can produce the scintillating light. The photosensor testing apparatus can provide a more accurate way of selecting a photosensor as compared to only analyzing an emission spectrum and data sheets and other information for the photosensors under consideration.

Abstract: Provided is a radiation detector including a scintillator which generates, when a radial ray enters, scintillation light having light intensity according to energy of the radial ray, and then supplies a photon of the scintillation light to each of a plurality of pixels, a radial ray detection unit which detects whether or not the radial ray is made to enter based on a number of the photons supplied in an exposure period whenever the plurality of pixels are exposed by the scintillation light over the exposure period, and an exposure period adjusting unit which adjusts the exposure period based on an incident frequency of the detected radial ray.

Abstract: A radiation detection apparatus can have optical coupling material capable of absorbing wavelengths of light within approximately 75 nm of a wavelength of scintillating light of a scintillation member of the radiation detection apparatus. In an embodiment, the optical coupling material can be disposed between a photosensor of the radiation detection apparatus and the scintillation member. In a particular embodiment, the composition of the optical coupling material can include a dye. In an illustrative embodiment, the dye can have a corresponding a* coordinate, a corresponding b* coordinate, and an L* coordinate greater than 0. In another embodiment, the optical coupling material can be disposed along substantially all of a side of the photosensor.

Abstract: An X-ray detector includes a light sensor configured to receive light energy from a scintillator receiving X-rays. The light sensor includes a grid of pixels having a light reception surface oriented toward the scintillator and configured to receive light from the scintillator. Each pixel includes a diode assembly, a control assembly and a capacitor assembly. The diode assembly is disposed on the light reception surface and is configured to produce electric charge responsive to light received by the diode assembly. The diode assembly includes plural diodes selectably configurable in plural combinations, wherein an amount of the electric charge produced by the diode assembly varies based on a selection of diode combination. The control assembly is operably connected to the diode assembly and configured to selectably configure the diodes. The capacitor assembly is operably connected to the diode assembly and configured to receive and store the electric charge from the diode assembly.

Abstract: A highly scalable platform for radiation measurement data collection with high precision time stamping and time measurements between the elements in the detection array uses IEEE 1588 with or without Synchronous Ethernet (timing over Ethernet) to synchronize the measurements. At a minimum, the system includes at least two radiation detector units, an IEEE 1588 and SyncE enabled Ethernet switch, and a computer for processing. The addition of timing over Ethernet and power over Ethernet (PoE) allows a radiation measurement system to operate with a single Ethernet cable, simplifying deployment of detectors using standardized technology with a multitude of configuration possibilities. This eliminates the need for an additional hardware for the timing measurements which simplifies the detection system, reduces the cost of the deployment, reduces the power consumption of the detection system and reduces the overall size of the system.

Abstract: The present invention discloses a microfabricated scintillation detector, comprising a channel structure (26) for containing a liquid scintillator material therein and flowing said liquid scintillator material therethrough. The channel structure (26) comprises first and second sets (30, 36) of adjacent channel portions (32, 38) arranged in first and second layers (34, 40) and in fluid communication with each other. The second set (36) of adjacent channel portions (38) is directed at right angles with respect to the first set (30) of adjacent channel portions (32). The first and second layers (34, 40) are stacked on top of each other with a separation layer (42) in between, integrally connecting said first and second layers (34, 40). The channel structure (26) simultaneously forms a light guiding structure for guiding scintillation light (52) towards a longitudinal end of the corresponding channel portion (32, 38).

Abstract: Apparatus for radiography is disclosed, which includes a scintillator having a first surface for being exposed to radiation and a second surface for emitting visible light in response, and an associated imaging system. The imaging system includes a plurality of scanning mirrors, each associated with a respective sub-region of the scintillator second surface, each scanning mirror being mounted and controlled so as to re-direct light from along a predetermined scan path within the respective sub-region towards a respective optical channel. A photodetector is associated with each scanning mirror and optical channel for receiving the re-directed light and generating an electrical signal representing light intensity. A processor receives the electrical signal from each photodetector and the corresponding position of each mirror to generate therefrom a reconstructed two-dimensional image.

Abstract: A radiation detection apparatus includes a selecting unit that allows a light having a light emission wavelength and a polarization direction to pass thorough the selecting unit, an optical system that forms an image of the light, a photon detecting unit that observes the image formed by the optical system, and detects the photon in whole range of the image, a counting unit that calculates the number of the alpha ray based on a result of counting the photon derived from the light emission of gas excited by the alpha ray, and is possible to sufficiently eliminate background light (noise light) even if background light is strong, and therefore observe weak light emission.

Abstract: An imaging system (100) includes a set of detector modules (108) that detect gamma rays, which have energy in a range of 40 to 140 keV and 511 keV, emitted by a radioisotope in an examination region, wherein 511 keV gamma rays are detected in singles mode in which individual 511 keV gamma rays, and not coincidence pairs of 511 keV gamma rays, are detected, an energy discriminator (132) that bins detected gamma rays into a first energy bin corresponding to 511 keV energy gamma rays and a second energy bin corresponding to 40 to 140 keV energy gamma rays, and a reconstructor (126) that reconstructs the 511 keV energy gamma rays thereby generating a first image of a distribution of a first radionuclide and that reconstructs the gamma rays in the one or more ranges between 40 and 140 keV thereby generating a second image of a distribution of a second radionuclide.

Abstract: An imaging apparatus (400) includes a detector array (412) with at least one detector tile (418). The detector tile includes a photosensor array (422) with a two dimensional array of individual photosensitive detector pixels (424) located within a non-photosensitive area (426) and readout electronics (432) coupled to the photosensor array. The readout electronics includes individual analog readout channel wells (602, 604) corresponding to the individual detector pixels, wherein an analog readout channel well electrically isolates analog electrical components therein from analog electrical components in other analog readout channel wells. Decoupling circuitry optionally is located in at least one of metal layers of the individual analog readout channels or in the individual analog readout channel wells.

Abstract: A scintillator element (114) comprising uncured scintillator material (112) is formed and optically cured to generate a cured scintillator element (122, 122?). The uncured scintillator material suitably combines at least a scintillator material powder and an uncured polymeric host. In a reel to reel process, a flexible array of optical detectors is transferred from a source reel (100) to a take-up reel (106) and the uncured scintillator material (112) is disposed on the flexible array and optically cured during said transfer. Such detector layers (31, 32, 33, 34, 35) are stackable to define a multi-layer computed tomography (CT) detector array (20). Detector element channels (50, 50?, 50?) include a preamplifier (52) and switching circuitry (54, 54?, 54?) having a first mode connecting the preamplifier with at least first detector array layers (31, 32) and a second mode connecting the preamplifier with at least second detector array layers (33, 34, 35).

Abstract: Scintillator arrays and methods of making scintillator arrays are provided. One scintillator array includes a scintillator substrate having a plurality of scintillators spaced apart by gaps within the scintillator substrate and a smoothing layer overlaying a surface of the scintillator substrate within the gaps. The smoothing layer includes an organically modified silicate. The scintillator array also includes an optical reflector layer overlaying a surface of the smoothing layer within the gaps.

Abstract: A scintillator has a two-dimensional array of a plurality of columnar crystals which converts radiation into light, and a covering portion covering the two-dimensional array. The covering portion includes connecting portions configured to partially connect the columnar crystals while partially forming cavities in gaps between the columnar crystals in the two-dimensional array.

Abstract: An x-ray detector assembly is disclosed that includes a mounting substrate having a plurality of electrical contacts, the mounting substrate comprising one of an integrated circuit and a circuit board. The x-ray detector assembly also includes a first electrode patterned on a first portion of a top surface of the mounting substrate, wherein the first electrode is electrically coupled to the plurality of electrical contacts. An organic photodiode layer is formed atop the first electrode and has a bottom surface electrically connected to the first electrode. A second electrode is coupled to a top surface of the organic photodiode layer and a scintillator is coupled to the second electrode.

Abstract: An X-ray detector is disclosed, in particular for a computed tomography system. In an embodiment, the X-ray detector includes a regular arrangement of measuring pixels for covering a measuring surface. A plurality of the measuring pixels of the regular arrangement are constructed as direct converting measuring pixels, and remaining ones of the measuring pixels are constructed as indirect converting measuring pixels.

Abstract: A radiation imaging apparatus includes a radiation image detection unit including a flexible substrate, photoelectric conversion elements arranged on the substrate, and a phosphor member disposed on an upper part of the substrate, a housing accommodating the radiation image detection unit, and a support member having the substrate disposed along a side surface for non-radiation transmission in the housing from a surface for radiation transmission in the housing.

Abstract: Some embodiments can comprise a tomographic imaging data acquisition method(s) and/or systems embodying the method(s). Some methods according to embodiments of the invention include simultaneously reading each photoconverter of a scintillation detector; reading the photoconverters at a frequency sufficient to obtain a plurality of digital sample measurements of a scintillation wave front; and recording the data read from each of the plurality of photoconverters as a function of time.

Abstract: A radiographic image capture device of the present invention includes: a radiation detection panel including a photoelectric conversion element that converts radiation into an electrical signal; a signal processing board that is disposed facing towards the radiation detection panel and that performs signal processing on electrical signals obtained by the radiation detection panel; a flexible substrate that includes wiring lines disposed on a base film provided between the radiation detection panel and the signal processing board and including a low wiring density region and a high wiring density region, and electronic component(s) that are electrically connected to the wiring lines; a reinforcement member that is provided at a low wiring density region and that raises the mechanical strength of the wiring lines.

Abstract: A slab detector for PET and/or SPECT imaging comprising a scintillation crystal slab and a plurality of photoconverters each in optical communication with a surface of the scintillation crystal. In some embodiments, the plurality of photoconverters define a two dimensional array, wherein each photoconverter abuts adjacent photoconverters. Furthermore, according to some embodiments a plurality of slab detectors can be juxtaposed with one another so that their slab crystals abut edgewise.

Abstract: An electronic cassette that is equipped with a drive mechanism capable of accommodating a radiation detection section respectively in two casings and that is capable of changing the surface area of the radiation detection section to be externally exposed and the exposure position on the radiation detection section. Deterioration of the radiation detection section from radiation can be distributed due to control such that the same exposure position is not repeatedly employed. An electronic cassette is accordingly provided that does not suffer from uneven effects of deterioration from radiation within a single sheet radiation detection section even with repeated use.

Abstract: A radiation imaging apparatus, comprising a sensor panel including a plurality of sensors arranged on a substrate and configured to detect light, and a scintillator placed over the sensor panel, wherein the scintillator having a concentric characteristics distribution having a center outside an outer edge of the scintillator.

Abstract: An x-ray imaging device include a scintillator layer configured to generate light from x-rays, a TFT detector array at the first surface of the scintillator layer to detect light generated in the scintillator, and a CMOS sensor at the second surface of the scintillator layer to detect light generated in the scintillator.

Abstract: Described herein is a gamma camera imaging system in which a plurality of gamma cameras or multiheads are attacked at a front face thereof to the outer surface of a flexible substrate. The flexible substrate is capable of forming an inner concave surface which in use is arranged to fit over or around a body part to be analyzed.

Abstract: Methods and systems for signal communication in gamma ray detectors are provided. One gamma ray detector includes a scintillator block having a plurality of scintillator crystals and a plurality of light sensors coupled to the scintillator crystals and having a plurality of microcells. Each of the plurality of light sensors have a local summing point in each of a plurality of signal summing regions, wherein the local summing points are connected to the plurality of microcells. The plurality of light sensors also each include a main summing point connected to the plurality of local summing points, wherein the main summing point is located a same distance from each of the local summing points.

Abstract: An instrument for assaying radiation includes a flat panel detector having a first side opposed to a second side. A collimated aperture covers at least a portion of the first side of the flat panel detector. At least one of a display screen or a radiation shield may cover at least a portion of the second side of the flat panel detector.

Abstract: A method of manufacturing a radiation detection apparatus, includes a bonding step of bonding, on a support substrate, a sensor substrate including a photoelectric converter in which a plurality of photoelectric conversion elements are arranged, by using a bonding layer including a passage which exhausts a gas between the support substrate and the sensor substrate, and a formation step of forming a scintillator layer on the photoelectric converter after the bonding step. The bonding layer has a heat resistance by which bonding between the support substrate and the sensor substrate by the bonding layer is maintained in the formation step.

Abstract: Systems and methods for a positron emission tomography (PET) kit are described. A PET detector kit may include a gantry, a plurality of PET detector modules, and an event processing device. A PET detector module may include a housing, a crystal, a light detector, and a communication component. The housing may include at least one connective element configured to removably and adjustably couple the PET detector module to the gantry. The crystal may be located within the housing. The light detector may be configured to detect light emitted by the crystal. The communication component may be configured to communicate data from the at least one light detector to an event processing device. The event processing device may receive data from the plurality of PET detector modules and may cause the one or more processors to determine coincidence events based on the received data.

Abstract: A photodetector according to an embodiment includes: a photodetector element unit including a first cell array including a plurality of first cells arranged in an array and a second cell array including a plurality of second cells arranged in an array, each of the first and second cells including a photoelectric conversion element, the second cell array being arranged to be adjacent to the first cell array; a first pulse height analyzer unit analyzing a pulse height of an electrical signal outputted from the first cell array; a second pulse height analyzer unit analyzing a pulse height of an electrical signal outputted from the second cell array; and a signal processing unit determining non-uniformity of a distribution of photons entering the first and second cell arrays using an output signal of the first pulse height analyzer unit and an output signal of the second pulse height analyzer unit.

Abstract: A radiation image-pickup device includes: a plurality of pixels configured to generate signal charge based on radiation; a first substrate including a transistor configured to read out the signal charge; a second substrate disposed to face the first substrate; a conversion layer provided between the first substrate and the second substrate, the conversion layer being provided for each of the pixels, and being configured to convert the radiation to other wavelength or an electric signal; a partition provided between the first substrate and the second substrate, to partition the conversion layer for each of the pixels; and a radiation shielding layer provided to face the partition.

Abstract: A nuclear scanner includes an annular support structure (32) which supports a plurality of detector modules (30). Each detector module includes a cooling and mounting structure (34) to which a plurality of tiles (40) are mounted by passing pins (46-49) through holes (38) in the cooling and mounting structure (34) to position each tile and thermally connect each tile to the cooling and mounting structure (34). A tile mount (44) on the side of the tile that makes contact with the cooling and mounting structure has a smooth face to make contact with the cooling and mounting structure to provide good thermal contact between the tile (40) and the cooling and support structure (34).

Abstract: An x-ray imaging device may include a detector array and an x-ray converting layer coupled to the detector array. The detector array and the x-ray converting layer may be configured such that x-rays traverse the detector array before propagating in the x-ray converting layer. The x-ray imaging device may also include a buildup layer behind the x-ray converting layer. The x-ray imaging device may be used as a “universal” imager for both MV and kV imaging.

Abstract: There is a problem that in an image sensor including an amplifier in each pixel, when a thin-film semiconductor is used as a transistor constituting the amplifier, voltage continues to be applied between source and gate of the transistor and thereby a threshold voltage value of the transistor varies, resulting in a variation of signal voltage. To solve the problem, a thin-film transistor formed with an oxide semiconductor is used as the transistor constituting the amplifier, and during a period other than a period of outputting an output of the amplifier, source potential of the transistor is controlled to be equal to drain potential thereof.

Abstract: A detector module configured to be included in an array of a plurality of detector modules that form a radiation detector is provided. The detector module includes a light emitting element configured to emit fluorescence upon receiving radiation, a light receiving element configured to convert the fluorescence into an electrical signal, and at least one support member located on a side opposite from said light emitting element, said at least one support member configured to support a light shielding member which covers a gap formed between adjacent detector modules in the array.

Abstract: A neutron detector circuit for a neutron detector is disclosed that includes a scintillator having a plurality of wavelength shifting optical fibers. A first detection circuit is connected with a first PMT output that is configured to generate a first detection circuit output in response to a first neutron event. A second detection circuit is connected with a second PMT output that is configured to generate a second detection circuit output in response to a second neutron event. A coincidence detection circuit is included that has inputs connected with the first and second detection circuit outputs that is configured to generate a neutron event count output pulse in response to coincident signals being received by the coincidence detection circuit from the first and second detection circuit outputs.

Abstract: An image pickup panel (1) includes: photodetection sections (10) each including a photodetector (11-1) and a receiver (11-2) which are integrally molded and having solder bumps (12) formed thereon, the photodetector converting received light into a current signal, the. receiver converting the current signal into a voltage signal; and a wiring layer (20) including a wiring pattern installed therein and allowing the photodetection sections to be mounted thereon for respective pixels by the solder bumps, the wiring pattern being connected to the photodetection sections.

Abstract: A radiation imager including: a detector block including at least one detector configured to emit an optical signal from incident radiation to be imaged; a reading block that converts the optical signal into an electrical signal, including a plurality of photodetectors; a plurality of resin portions between the detector block and the photodetectors, in contact with the detector block and in contact with the photodetectors, the resin portions being separated by air, the resin portions including at least a part with cross-section increasing from the detector block to the reading block.

Abstract: A method and apparatus for detecting an isotope. Embodiments can detect radioactive isotopes. Embodiments can utilize a detector that incorporates at least two sub-detectors. Each sub-detector can receive energy from an isotope and create a signal corresponding to the received energy. Each sub-detector can incorporate a detector element, such as a detector element incorporating one or more diodes, a detector element incorporating a crystal, a detector element incorporating a solid-state device, or a detector element incorporating a scintillator. The sub-detectors can be configured such that for each isotope to be detected at least two of the sub-detectors produce different output signals, or readings. In an embodiment, each sub-detector is configured such that when there are at least two sub-detectors exposed to the isotope each of the corresponding readings from the sub-detectors is different from each of the other readings.

Abstract: A radiation imaging apparatus, comprising a sensor array in which a plurality of sensors are arrayed, and scintillators arranged in a plurality of regions divided by members on the sensor array, wherein a relationship P2<P1 is satisfied, where P1 represents a pitch of the plurality of sensors in the sensor array and P2 represents a distance between centers of two adjacent ones of the members, which sandwich one of the plurality of regions therebetween.

Abstract: An imaging device capable of obtaining image data with a small amount of X-ray irradiation is provided. The imaging device obtains an image using X-rays and includes a scintillator and a plurality of pixel circuits arranged in a matrix and overlapping with the scintillator. The use of a transistor with an extremely small off-state current in the pixel circuits enables leakage of electrical charges from a charge accumulation portion to be reduced as much as possible, and an accumulation operation to be performed substantially at the same time in all of the pixel circuits. The accumulation operation is synchronized with X-ray irradiation, so that the amount of X-ray irradiation can be reduced.

Abstract: A PET or SPECT radiation detector module (50) includes an array of detectors (54, 58) and their associated processing circuitry are connected by a flexible cable having releasable connectors. A method of mounting and dismounting includes mounting a radiation detector array in a support structure in a diagnostic scanner, connecting one end of a flexible connector to the detector array, and connecting the other end of the flexible connector to its associated circuitry.

Abstract: A scintillator pixel array can include a plurality of scintillator pixels and a plurality of voids arranged in a checkerboard pattern. Each void can be defined by at least two surfaces having an adhesive disposed thereon. The scintillator pixel array can be made by fabricating an array of scintillator members and dissolvable members and dissolving the dissolvable members in a solvent.

Abstract: A radiation image conversion panel which can improve its optical output and resolution is provided. A radiation image conversion panel 1 comprises a FOP 2, a heat-resistant resin layer 3 formed on a main face 2a of the FOP 2, and a scintillator 4 formed by vapor deposition on a main face 3a of the heat-resistant layer 3 on a side opposite from the FOP 2 and made of a columnar crystal. In this radiation image conversion panel 1, the main face 3a of the heat-resistant resin layer 3 has a surface energy of at least 20 [mN/m] but less than 35 [mN/m]. This can make the crystallinity of the root part of the scintillator 4 favorable, so as to inhibit the root part of the scintillator 4 from becoming harder to transmit and easier to scatter the output light.

Abstract: The present invention provides a radiation detecting element and a radiographic imaging device that may reliably detect radiation even when a region where radiation is irradiated is set narrowly. Namely, in the radiation detecting element and the radiographic imaging device of the present invention, plural pixels including radiographic imaging pixels and plural radiation detection pixels are disposed in a matrix in a detection region that detects radiation.