Abstract: A radiation monitor 1 includes a light-emitting unit 10 which generates light having an intensity depending on an amount of an incident radiation, an optical fiber 20 which sends a photon generated by the light-emitting unit 10, a photoelectric converter 30 which transmits one electric pulse to one sent photon, a dose calculation device 40 which counts the electric pulse amplified by the photoelectric converter 30 and converts the counted value of the measured electric pulses into a dose of the radiation, and a display device 50. The dose calculation device 40 counts the electric signals converted from the photon by the photoelectric converter 30 to calculate a counting rate, and stops the counting when the counting rate exceeds a predetermined threshold, and performs counting when the counting rate is less than the threshold.

Abstract: Methods and systems for detecting a three-dimensional position of a scintillation event converting a radiation into a light. For example, a system includes a crystal array including a plurality of crystal elements arranged at least along a first direction and a second direction, the plurality of crystal elements extending along a third direction between a first end and a second end, the plurality of crystal elements being configured to receive the radiation entered from the second end; wherein: the plurality of crystal elements is arranged into a plurality of crystal pairs; each of the plurality of crystal pairs optically coupled to one light bridge at the first end extending and bridging light along the first direction; each of the plurality of crystal pairs is optically coupled for the light in the second direction with at least a neighboring crystal pair only through two light tunnels.

Abstract: In the present invention, a detection device has a chip holder, an excitation-light radiation unit, and a heat source. The chip holder is used for positioning a detection chip that has: a prism; a metal film; a trapping body; and a substrate. The excitation-light radiation unit radiates excitation light at the reaction site via the light-entry surface of the detection chip, which is held by the chip holder. The heat source is disposed in a position so as to face, in a non-contacting manner, the surface of the prism of the detection chip held by the chip holder that is closest to the reaction site, and so as not to interfere with the optical path of the excitation light. The chip holder positions the detection chip while in contact with only the reverse surface of the substrate and/or a convex portion positioned on the prism.

Abstract: A method for finding an orthogonal direction of a radiation source with respect a digitally optimized interference pattern of a first fixed electromagnetic element and a second fixed electromagnetic element has been established. Determining a direction of a radiation source allows for dynamic control of moving object.

Abstract: Adaptive imaging methods and systems for generating enhanced low light video of an object for medical visualization are disclosed and include acquiring, with an image acquisition assembly, a sequence of reference frames and/or a sequence of low light video frames depicting the object, assessing relative movement between the image acquisition assembly and the object based on at least a portion of the acquired sequence of reference video frames or the acquired sequence of low light video frames, adjusting a level of image processing of the low light video frames based at least in part on the relative movement between the image acquisition assembly and the object, and generating a characteristic low light video output from a quantity of the low light video frames, wherein the quantity of the low light video frames is based on the adjusted level of image processing of the low light video frames.

Abstract: There is provided a diagnostic imaging agent for early bone metastasis from cancer, containing trans-1-amino-[18F]fluorocyclobutanecarboxylic acid or a pharmaceutically acceptable salt thereof as an active ingredient.

Abstract: A honeycomb rib structure in a rotating gantry of a proton includes an upper honeycombed rib plate and a lower honeycombed rib plate which are mounted in a cylindrical body through a plurality of connecting structures. The upper and lower honeycombed rib plates are symmetrically arranged, and are spliced by a plurality of basic structures which are in a regular hexagonal shape. Connecting nodes between the adjacent basic structures are of a ring structure. Densities of the upper and lower honeycombed rib plates are adjusted through a density increasing structure.

Abstract: A radiation position detector includes a radiator including a medium that generates light in a first wavelength region and light in a second wavelength region by interacting with incident radiation, a first photodetector that includes a plurality of first two-dimensionally arranged pixels and detects the light in the first wavelength region, and a second photodetector that includes a plurality of second two-dimensionally arranged pixels and detects the light in the second wavelength region.

Abstract: Boron nitride nanotubes (BNNTs) with 1013 combined with a scintillation gas can serve as the basis for detecting thermal neutrons by detecting light from the decay products of the thermal neutron's absorption on the 10B atoms in the BNNT Material as the resultant decay products pass through the scintillating gas. BNNTs with 11B can be utilized as a scaffold for 238U and combined with a scintillation gas as the basis for detecting fast neutrons via detecting light from the fission decay products passing through the scintillating gas. Both technologies provide high spatial and temporal resolution for the detection of thermal neutrons and fast neutrons respectively.

Abstract: A 14C testing bottle, a 14C testing device, a 14C testing method, a sampling and preparation system and its implementation method are provided. The 14C testing bottle includes a pressure-bearing shell and a sample bin positioned in the pressure-bearing shell. A cavity is arranged in the sample bin and the 14C testing bottle is provided with an injection port connected to the cavity. The sample bin may diffuse the light produced in the cavity and at least part of the sample bin is transparent. An optical fiber channel is set on the pressure-bearing shell. One end of the optical fiber channel is connected with an external scintillation counter, and the other end of the optical fiber channel is connected with the transparent part of the sample bin. The 14C testing bottle may measure the 14C content in the carbon dioxide sample rapidly.

Abstract: Scintillating plastics resistant to crazing and fogging, methods of making and using the same are disclosed. The scintillating plastics include: one or more primary polymers present in an amount ranging from about 40 wt % to about 95 wt %; one or more secondary polymers present in an amount ranging from about 1 wt % to about 60 wt %; and one or more fluors present in an amount ranging from about 0.1 wt % to about 50 wt %. Methods of making such plastics include: creating a homogenous mixture of precursor materials including primary polymer, secondary polymer, and fluor in the amounts set forth above; and polymerizing the homogenous mixture. Methods of using such plastics include: exposing the scintillating plastic to one or more extreme environmental conditions for a predetermined amount of time without generating crazing or fogging within the scintillating plastic. Various additional features and specific embodiments of these inventive concepts are also disclosed.

Abstract: The present disclosure relates to a process for fabricating a crystalline scintillator material with a structure of elpasolite type of theoretical composition A2BC(1-y)MyX(6-y) wherein: A is chosen from among Cs, Rb, K, Na, B is chosen from among Li, K, Na, C is chosen from among the rare earths, Al, Ga, M is chosen from among the alkaline earths, X is chosen from among F, Cl, Br, I, y representing the atomic fraction of substitution of C by M and being in the range extending from 0 to 0.05, comprising its crystallization by cooling from a melt bath comprising r moles of A and s moles of B, the melt bath in contact with the material containing A and B in such a way that 2s/r is above 1. The process shows an improved fabrication yield. Moreover, the crystals obtained can have compositions closer to stoichiometry and have improved scintillation properties.

Abstract: A subsurface logging tool that is deployable in a wellbore that traverses a formation includes a gamma-ray scintillation detector with a thallium-based scintillator material. The scintillator material is suitable for high-temperature downhole environments (i.e., above 70° C.). As such, the scintillator material improves the performance of oilfield measurement(s) at temperatures above 70° C. and at least up to 175° C., when compared with the use of the other materials. The scintillator material may have an effective atomic number of at least sixty. The scintillator material may have the chemical formula Tl2LiY1-xCexCl6, where x is 0 to 1. Lithium (Li) may be partially or completely replaced by another alkali metal or by indium (In). Yttrium (Y) is partially or completely replaced by another rare earth element. Chlorine (Cl) is partially or completely replaced by another halide.

Abstract: The present disclosure relates to a PET detector and a PET frame. The PET detector may include a plurality of detector modules and a plurality of installing modules configured to install the plurality of detector modules. The plurality of installing modules may be coupled together to form a detector ring. The PET frame may include a detector stabilizing cylinder configured to stabilize a detector and a fixing support configured to support the detector stabilizing cylinder. The detector stabilizing cylinder may be rotatably fixed on the fixing support.

Abstract: Systems and methods for configuring a radiation detector are provided. A first event is detected at a first scintillator crystal of a first detector unit. A second coincident event is detected at a second scintillator crystal of a second detector unit adjacent to the first detector unit. Operating parameters are calculated for the first detector unit based on the coincident events.

Abstract: A long length imaging system having a host processor, an x-ray source, and a plurality of radiographic detectors is configured to simultaneously capture a radiographic image of a portion of a subject exposed by the x-ray source, and to transmit the partial images to the host processor whereby the partial images are combined into a long length image.

Abstract: A method and system for simultaneously monitoring a positron emission tomography scanner performance during a continuous-bed-motion acquisition is disclosed.

Abstract: An apparatus for detecting radiation for obtaining density information of a structure, the apparatus including: at least one detector (10), the detector (10) including: a scintillator (12) including a scintillating material for emitting light in response to incident radiation (14), and a photodetector (16) for receiving light emitted by the scintillating material (12) and outputting an electrical signal in response to light received from the scintillating material (12), wherein the photodetector (16) includes at least one silicon photomultiplier (16a). The invention reduces the volume of the apparatus and therefore provides particular advantages for use in scanning pipelines and other structures located deep subsea.

Abstract: A method of beamforming datasets from a tomographic detection system. The system comprises scintillation detectors that are arranged in D detector pairs, D?1, wherein the detectors are adapted to count radiation hits. According to the method in one aspect, a tomographic dataset is received for each detector pair coordinates (?d, pd) of a detector pair d of the D detector pairs, so as to obtain a plurality of tomographic datasets. Each of said datasets is associated with respective detector pair coordinates (?d, pd). Then, for each point y of interest, the received datasets are coherently combined by weighting the datasets according to respective beamforming weights d(y)=?(?d, pd; y), based on said respective detector pair coordinates (?d, pd) and coordinates of said each point y of interest. This way, a signal focusing on said each point y is obtained. Related tomographic detection systems and computer program products may be also presented.

Abstract: Disclosed is a photon-counting x-ray detector system having a plurality of photon-counting channels, and at least one anti-coincidence circuit, each of which is connected to least two of the channels and configured to detect coincident events in the connected channels. The x-ray detector system further includes an anti-coincidence controller configured to control the operation of the at least one anti-coincidence circuit based on photon count information by gradually adapting the operation of the at least one anti-coincidence circuit with increasing count rates, starting from a threshold count rate.

Abstract: A method and system for acquiring a series of medical images includes receiving medical imaging data corresponding to photons emitted from a subject having received a dose of a radiotracer. Determining, from the medical imaging data, coincidence events including photon coincidence events involving two photons and photon coincidence events involving more than two photons. The photon coincidence events involving two photons and photon coincidence events involving more than two photons are processed and use to reconstruct a series of medical images of the subject.

Abstract: This disclosure provides a radiation detection apparatus and a method, a data processing method and a processor, which relates to the field of radiation detection technology. Wherein, the radiation detection apparatus of this disclosure comprises: a radiation detector which generates an electrical signal by interacting with X-rays; an Analog-to-Digital Converter (ADC) which is coupled to the radiation detector and transmits the electrical signal to a waveform data; and a data processor which receives the waveform data from the ADC, determines the number of single photon signals according to the waveform data, and determines whether an integral signal and/or a count signal of the waveform data will be used for imaging according to the number of the single photon signals.

Abstract: A magnetic shield cover for an encoder of magnetic detection type includes a soft magnetic section and a non-magnetic section. The soft magnetic section is formed to cover a magnetic detection element and a magnet and has an opening for avoiding a situation that a part of the soft magnetic section prevents a magnetic field from the magnet from passing through the magnetic detection element. The non-magnetic section is provided in the opening of the soft magnetic section.

Abstract: In a radiation position detection method, a scintillator that initially generates scintillation light is specified on the basis of a two-dimensional map showing regions for identifying a plurality of scintillators and the centroid position of positions where the scintillation light is generated. The regions shown in the two-dimensional map includes a first region corresponding to a first scintillator which is one of the plurality of scintillators, a second region corresponding to a second scintillator adjacent to the first scintillator among the plurality of scintillators, a third region that is located on the first region side and corresponds to the second scintillator, and a fourth region that is located on the second region side and corresponds to the first scintillator.

Abstract: Some embodiments of the present invention provide a 2D position-sensitive detector assembly comprising at least three substantially planar detector portions arranged in overlapping relationship as viewed normal to a plane of the detector portions, each detector portion comprising an array of substantially parallel, linear detector elements, the detector elements of respective detector portions being mutually non-parallel, the detector elements each being configured to generate one or more electrical signals in response to interaction of a particle of radiation therewith.

Abstract: The present disclosure relates to a scintillator, method for manufacturing the same and applications of scintillator. The scintillator has a chemical formula of Tl2ABC6:yCe, wherein A includes at least one alkali element; B includes at least one trivalent element; C includes at least one halogen element; and y is equal to or greater than 0 and equal to or smaller than 1.

Abstract: A device for detecting neutrons and gamma rays comprises at least one detector and an acquisition and data-analysis system, connected to the detector; the detector comprises an active part that is formed by a plurality of: scintillator layers, made of a scintillator material, in particular a plastic scintillator; and absorber layers, containing at least one neutron-absorbing material, in particular cadmium or gadolinium; the acquisition and data-analysis system is configured so as to: analyze the signals coming from the detector and calculate the total energy released within the detector following upon an interaction with gamma rays or neutrons; and discriminate between gamma rays and neutrons impinging upon the detector according to whether the energy detected is higher or lower than a pre-set threshold.

Abstract: A charged-particle beam therapy apparatus includes: an accelerator configured to accelerate a charged particle and emit a charged-particle beam; an irradiation unit configured to irradiate an irradiated body with the charged-particle beam using a scanning method; and a control unit. The control unit stores a control pattern of the apparatus during one treatment. An irradiation interruption time for which the irradiation of the irradiated body with the charged-particle beam by the irradiation unit is interrupted and an irradiation time for which the irradiation unit irradiates the irradiated body with the charged-particle beam are set in the control pattern. The sum of the irradiation interruption times during one treatment is set to be shorter than the sum of the irradiation times during one treatment.

Abstract: According to one embodiment, an apparatus of manufacturing a radiation detection panel, includes an evaporation source configured to evaporate a scintillator material and emit the scintillator material vertically upward, a holding mechanism located vertically above the evaporation source, and holding a photoelectric conversion substrate, and a heat conductor arranged opposite to the holding mechanism with a gap.

Abstract: A detection substrate and a manufacturing method thereof, and a detector are provided. The detection substrate comprises a base substrate, a thin film transistor, a PIN photodiode and a scintillation layer. The thin film transistor and the PIN photodiode are provided above a first face of the base substrate and the scintillation layer is provided above a second face of the base substrate. The visible light obtained after the X-ray passes through the scintillation layer is directly irradiated on the PIN photodiode after passing through the base substrate with relative high transmittance, thus preventing intensity of the light irradiated on the PIN photodiode from being weakened, and improving light utilization efficiency of the detection substrate.

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 entire image, a counting unit that calculates the number of the alpha rays based on a result of counting the photons derived from the light emission of gas excited by the alpha rays, whereby it is possible to sufficiently eliminate background light (noise light) even if background light is strong, and therefore observe weak light emission.

Abstract: Embodiments are directed to a fast and thermal neutron detector material composition for Special Nuclear Material (SNM) detection. Specific embodiments of the material composition result in two excimer scintillation light production mechanisms that provide two corresponding independent techniques for gamma discrimination; namely Pulse Shape Discrimination and Pulse Height Discrimination. A dual discrimination method, Pulse Shape and Pulse Height Discrimination (PSHD), can be implemented relying on both pulse height discrimination and pulse shape discrimination, and can allow the operation of large area, fast and thermal neutron detectors.

Abstract: According to one embodiment, an apparatus of manufacturing a radiation detection panel, includes an evaporation source configured to evaporate a scintillator material and emit the scintillator material vertically upward, a holding mechanism located vertically above the evaporation source, and holding a photoelectric conversion substrate, and a heat conductor arranged opposite to the holding mechanism with a gap.

Abstract: An apparatus, system, and method involving one or more sparse detectors are provided. A sparse detector may include an array of scintillator crystals generating scintillation in response to radiation and an array of photodetectors generating an electrical signal in response to the scintillation. A portion of the scintillator crystals may be spaced apart by substituents or gaps. The distribution of the substitutes or gaps may be according to a sparsity rule. At least a portion of the array of photodetectors may be coupled to the array of scintillator crystals. An imaging system including an apparatus that may include one or more sparse detectors is provided. The imaging system may include a processor to process the imaging data acquired by the apparatus or system including the one or more sparse detectors. The method may include preprocess the acquired image data and produce images by image reconstruction.

Abstract: A radiation monitoring device includes: a scintillator emitting fluorescence upon absorption of radiation, a photo-multiplier tube converting the fluorescence into an electron pulse, a preamplifier converting the electron pulse into an analog voltage pulse, a pulse amplifier amplifying the analog voltage based on a gain control value, a dose rate measurement part measuring a dose rate based on an output of the pulse amplifier, an average half width measurement part, measuring a half width of a voltage pulse, which is among the outputs of the pulse amplifier and has a wave height larger than a preset value, and processing a predetermined number of measured data on the half widths to calculate a half width deviation, a gain control part receiving the half width deviation from the average half width measurement part, and determining the gain control value using a table, which lists relations between half widths and temperature calibration factors.

Abstract: A crystal material represented by a general formula (1): (Gd1-x-y-zLaxMEyREz)2MM2O7?? (1), where ME is at least one selected from Y, Yb, Sc, and Lu; RE is Ce or Pr; MM is at least one selected from Si and Ge; and ranges of x, y, and z are represented by the following (i): (i) 0.0?x+y+z<1.0, 0.05?x+z<1.0, 0.0?y<1.0, and 0.0001?z<0.05 (where, when RE is Ce, y=0 is an exception).

Abstract: A radioisotope generator that releases a daughter radioisotope from radioactive decay of a corresponding parent isotope, such as a 82Sr/82Rb radioisotope generator or 68Ge/68Ga radioisotope generator, may be used to generate radioisotopes for medical imaging applications. In some examples, a gamma ray detector is positioned to detect gamma rays emanating from radioactive eluate flowing from the generator. Based on the detected gamma rays, an activity of the daughter radioisotope in the eluate and an activity of the parent radioisotope in the eluate may be determined. Depending on the application, the activity of the daughter radioisotope and the activity of the parent radioisotope may be determined in substantially real time, e.g., so that the eluate can be diverted from patient dosing based on determined activity information for the eluate.

Abstract: Disclosed herein too is a positron emission tomography calibration system comprising a positron emission tomography scanner having a ring detector that comprises at least one bin for receiving radiation; a patient that is placed at approximately the center of the ring detector where the patient is irradiated with at least one dose of a treatment radiation beam; a crystal efficiency calibration system that performs the following: measures activity generated by the at least one defined radiation dose in the at least one bin; takes projection data of the measured activity; calculates crystal efficiency from the projection data; re-estimates the measured activity of each bin based on the calculated crystal efficiency; and calibrates the detector based on the re-estimated measured activity.

Abstract: Methods for setting up, maintaining and operating a radiopharmaceutical infusion system, that includes a radioisotope generator, are facilitated by a computer of the system. The computer includes pre-programmed instructions and a computer interface, for interaction with a user of the system, for example, in order to track contained volumes of eluant and/or eluate, and/or to track time from completion of an elution performed by the system, and/or to calculate one or more system parameters for quality control, and/or to perform purges of the system.

Abstract: A method, an apparatus, an arrangement and a computer readable storage medium for determining an image based at least in part on first data having a first representation is provided. The approach comprises determining a projection of an imaging element on the first representation, the imaging element being arranged to at least partly overlap with the first representation, determining a first subset of data as the subset of the first data corresponding to the projection of the imaging element on the first representation, and determining the image based at least in part on the first subset of data.

Abstract: A portable detection apparatus can include a housing, a first detector for detecting ionizing radiation from a first subject and a second detector within the housing for the detecting the background radiation. A shield within the housing can surround the first and second detectors and define a shield aperture around the first and second detectors for radiation from the subject to enter the housing. A radiation blocking member can substantially block at least a portion of the ionizing radiation from reaching the second detector, whereby radiation detected by the second detector comprises substantially only the background radiation. A processor module can be connected to the first and second detectors for determining the amount of ionizing radiation detected by the first detector attributable to secondary radiation.

Abstract: The present disclosure is directed to a group of newly discovered intrinsic scintillation compounds. As intrinsic scintillators, these compounds do not require an external activator as a dopant. The new scintillators may include members of two elpasolite families with the general exemplary formulas of A2BMX(6-y)X?y and A3MX(6-y)X?y, (0<y<6).

Abstract: Systems and methods for coordinating a medical imaging workflow with the use of preparation and coordination actions, and similar pre-processing protocols are disclosed herein. Imaging procedure data from a medical imaging study, such as image data and order data produced from imaging procedures (e.g., radiological imaging procedures) at medical facilities is processed and presented for review to a preparing user. The preparing user is offered the ability to change the display characteristics of image presentation, supplement erroneous or incomplete data and information of the study, open a support request for the study, or associate prior or comparison images with the study. The changes provided by the preparing user within these or other portions of a preparation protocol may be used to affect a subsequent display of the medical imaging study, and in some examples, to affect the assignment of the study in the workflow to particular imaging users.

Abstract: An apparatus, method, computer-readable medium, and system for adjusting data acquisition parameters during a scan performed by a Positron Emission Tomography (PET) scanner. The method includes obtaining, during the scan, a current temperature of a detector of the PET scanner, and adjusting, based on the current temperature, the data acquisition parameters used by the PET scanner during the scan.

Abstract: Tritiated planar carbon forms and their production are provided. Methods are provided for the stoichiometrically controlled labeling of planar carbon forms capitalizing on normal flaws of carboxylic acids ubiquitously present in commercial preparations of these planar carbon forms. Alternative methods include generation of a metallated intermediate whereby a metal is substituted for hydrogen on the carbon backbone of a planar carbon form. The metalized intermediate is then reacted with a tritium donor to covalently label the planar carbon form. The tritiated planar carbon forms produced are useful, for example, for determination of a biological property or environmental fate of planar carbon forms.

Abstract: Polymer composite neutron detector materials are described. The composite materials include an aromatic polymer matrix, such as an aromatic polyester. Distributed within the polymer matrix are neutron capture agents, such as 6LiF nanoparticles, and organic or inorganic luminescent fluors. The composite materials can be formed into stretched or unstretched thin films, fibers or fiber mats.

Abstract: An integrated circuit includes an array of pixels for capturing and processing successive image frames of a moving scene, the array including at least one row of pixels (inputs); and at least one current value register, in which the current value register is configured to store current pixel values captured from the array (inputs). Also included is at least one set of multiple accumulated value registers, in which each accumulated value register is configured to communicate with the current value register. Furthermore, there is included at least one readout register, in which the readout register is configured to communicate with the set of accumulated value registers. A controller is also included for shifting and summing the rows of pixels and outputting a summed column as a time delayed integrated (TDI) signal.

Abstract: The invention is directed to several crystal arrangements for time-of-flight (ToF) positron emission tomography (PET) with depth of interaction (DOI) encoding for high spatial, energy and timing resolution. Additionally, several implementations of the ToF-DOI PET detector arrays are proposed with related measurements which all show that no timing degradation is visible in the used setup for first photon trigger for digital silicon photo multipliers (dSiPMs).

Abstract: According to one embodiment, a flexible wedge filter is arranged between an X-ray tube and an examinee to attenuate a dose according to an X-ray from the X-ray tube. The flexible wedge filter has a plurality of filter modules 39 having a configuration capable of individually changing an X-ray transmission path length in an X-ray shielding material. The PCCT gantry controller individually operates the plurality of filter modules such that a dose according to an X-ray incident to an X-ray detector from the X-ray tube via the examinee is distributed substantially uniformly in spatial.

Abstract: A method for processing electrical signals from a phoswich scintillator including an upstream scintillator and a downstream scintillator, the method including, for each electrical signal: digitization of the electrical signal; determination of an amplitude and an integral surface area of the digitized electrical signal; and representation of an event associated with an electrical signal by a pair of data items.