There are provided a storage section 220 that stores an output value read out by counting a pulse signal of incident X-rays, by a photon-counting type semiconductor detector; and a calculation section 230 that calculates a count value based on the output value that has been read out, wherein the calculation section 230 uses a model in which an apparent time constant of the pulse signal monotonously decreases against increase in pulse detection ratio with respect to exposure. According to such a model, the corresponding apparent time constant is able to be obtained even in any higher count rate. As a result of this, reduced can be the influence of count loss even on the count rate that has not been able to be covered by the conventional method.

A radiation image scanner that reads a radiation image from an imaging plate, the radiation image scanner including: a stage that holds the imaging plate; an excitation light source that irradiates the imaging plate held by the stage with excitation light; and a photodetector that detects light emitted from the imaging plate by the excitation light, in which the stage includes: a stage body that includes a supporting surface capable of being brought into surface contact with a back surface of the imaging plate; and a positioning mechanism that includes a positioning surface being in contact with an edge portion of the imaging plate supported on the supporting surface and positioning the edge portion from outside along the supporting surface while pressing the edge portion against the supporting surface.

Method and apparatus for scanning a region of interest (ROI) by a gamma detector. An exemplary method includes determining, for each of multiple detector configurations, a respective weight based on an absorption profile, associating each of a plurality of portions of the ROI with a respective gamma attenuation value; and detecting gamma radiation from multiple detector configurations for time periods allocated among the detector configurations based on the weights determined.

A detection device including a substrate, a switch element, a photoelectric element, and a scintillator is provided. The switch element is disposed on the substrate. The photoelectric element is disposed on the substrate and coupled to the switch element. The photoelectric element includes a semiconductor, and the semiconductor includes a monocrystalline material or a polycrystalline material. The scintillator is at least partially overlapped with the photoelectric element in a top view direction of the detection device.

The present invention relates to a radioactivity measurement method and a radioactivity measurement system. A radioactivity measurement method according to the present invention comprises the steps of: measuring radioactivity while performing energy scanning and temporal scanning; preparing a database from a time-energy-related data set obtained in result of the scanning; and obtaining a radioactivity measurement value of desired time from the database.

A method for training an apparatus for training a nuclide identification model is provided. In the method, nuclide data is classified into characteristics of energy spectrums for nuclides, training data is generated based on a number of data in each of the classified characteristics, and the nuclide identification model is trained by using the training data.

An x-ray apparatus, that may include a mount that is configured to hold a sample; an x-ray source, that is configured to direct an x-ray beam toward a first side of the sample; a detector, positioned downstream to a second side of the sample, the detector is configured to detect, during a sample measurement period, at least a part of x-rays that have been transmitted through the sample; and an x-ray intensity detector that is positioned, during a beam intensity monitoring period at a measurement position that is located between the x-ray source and the first side of the sample, so as to detect at least a part of the x-ray beam before the x-ray beam reaches the sample.

An x-ray apparatus, that may include a mount that is configured to hold a sample; an x-ray source, that is configured to direct an x-ray beam toward a first side of the sample; a detector, positioned downstream to a second side of the sample, the detector is configured to detect, during a sample measurement period, at least a part of x-rays that have been transmitted through the sample; and an x-ray intensity detector that is positioned, during a beam intensity monitoring period at a measurement position that is located between the x-ray source and the first side of the sample, so as to detect at least a part of the x-ray beam before the x-ray beam reaches the sample.

A method and apparatus for testing the response of protective headgear 104 to impact forces. A high-speed cineradiography imaging system 100 is used to obtain full-field, time-resolved internal monitoring and measurement of headgear component (pads 140 and liners 142) deformation and interaction with a head surrogate (headform 102), deformation of headform components, and stress and strain transfer into the headform. Radiopaque contrast materials (144 & 148) and integration techniques are used to highlight specific regions of interest within the headgear and headform components during the impact loading events.

A radiation detector with first and second scintillator structures is disclosed. The first scintillator structure comprises a plurality of first scintillator pixels. The first scintillator pixels are separated by gaps, which may be filled with a reflective material to achieve an optical separation of the first scintillator pixels. The second scintillator structure is adapted to increase the absorption of radiation and the output of light. Thereto, the second scintillator structure overlaps at least partially the gaps between first scintillator pixels. The second scintillator structure is optically coupled to the first scintillator structure, so that light emitted by the second scintillator structure is fed into first scintillator pixels. The second scintillator structure may be mounted onto the first scintillator structure using additive manufacturing.