Abstract: A radiation imaging device includes charge generation chips configured to generate charges, reading chips configured to output a digital value based on the charges, and a circuit board configured to have the reading chips arranged thereon. The charge generation chips each have a charge output surfaces including a first output region facing the reading chip and a second output region facing a different reading chip. The reading chips each have signal input/output electrodes. The charge generation chips each have signal connection wirings extending from the first output region to the second output region and electrically connecting the signal input/output electrodes of the reading chip to the signal input/output electrodes of the different reading chip.

Abstract: An X-ray imaging device that includes an X-ray source, an X-ray sensor that acquires intensity information of X-rays, a distance sensor that obtains distance information to a surface of an imaging object, and an information processing device that obtains imaging information by using the intensity information and the distance information. The information processing device includes an extraction unit that extracts information used in generation of the imaging information from the intensity information by using at least the distance information, and a reconstruction unit that generates the imaging information by using the intensity information.

Abstract: A radiation imaging apparatus includes a plurality of pixels configured to generate an electric charge corresponding to energy or the number of particles of incident radiation, a plurality of signal processing parts respectively connected to the plurality of pixels and configured to generate a digital value based on the electric charge provided by each of the pixels, and a circuit board in which a radiation detector including the plurality of pixels and the plurality of signal processing parts is disposed in a two-dimensional manner. Each of the plurality of signal processing parts includes a signal conversion part configured to convert an analog value based on the electric charge into the digital value, and a clock signal generation part configured to provide a clock signal for generating a digital value to the signal conversion part.

Abstract: A radiation imaging device includes a radiation detector having an electric charge generation part configured to generate an electric charge corresponding to energy of incident radiation and a reading part configured to output a digital value based on the electric charge, and a circuit board in which a plurality of radiation detectors are disposed two-dimensionally. The reading part includes a lead-out substrate in which a plurality of signal processing parts are disposed two-dimensionally, and an intermediate substrate disposed between the electric charge generation part and the lead-out substrate. A plurality of first intermediate electrodes are disposed on an intermediate input surface. A plurality of second intermediate electrodes are disposed on an intermediate output surface. An arrangement interval of the second intermediate electrodes is different from an arrangement interval of the first intermediate electrodes.

Abstract: An object is to provide intensity information and energy information while reducing processing load and power consumption. In a radiation detector, a radiation detection element, in which a plurality of pixels each configured to generate an electric charge corresponding to energy of X-rays penetrating a subject is two-dimensionally arranged, and a plurality of read circuits each configured to output an intensity signal of transmitted X-rays based on the electric charge generated by each of the plurality of pixels are stacked with each other, and some read circuits thinned out from a plurality of read circuits each generate a spectral signal related to a spectrum of a transmitted X-ray based on the electric charge and output the spectral signal.

Abstract: A radiation detector includes a charge generation part configured to generate charge corresponding to energy of an incident radiation, a preamplification part configured to output an analog signal corresponding to the charge, a signal conversion part configured to receive the analog signal and output a digital signal being the analog signal that has been discretized, an energy discrimination part configured to compare the digital signal to a threshold value and output components of the digital signal exceeding the threshold value, and an energy integration part configured to obtain an energy integrated value defined as a summation of the components exceeding the threshold value obtained each time the radiation enters.

Abstract: An object is to improve the reliability of output information by simplifying a wiring route. A radiation image sensor includes a radiation detector in which a plurality of pixels of a charge generator for generating a charge corresponding to energy or the number of particles of incident radiation and a plurality of read circuits for outputting a digital value based on the charge generated by each pixel of the charge generator are mutually stacked and two-dimensionally disposed, and a circuit board on which a plurality of radiation detectors is disposed, in which the plurality of read circuits of one radiation detector is configured to transfer data indicating a digital value in the plurality of read circuits and then output the data to another adjacent radiation detector in response to a control signal from the outside.

Abstract: An X-ray imaging device that includes an X-ray source, an X-ray sensor that acquires intensity information of X-rays, a distance sensor that obtains distance information to a surface of an imaging object, and an information processing device that obtains imaging information by using the intensity information and the distance information. The information processing device includes an extraction unit that extracts information used in generation of the imaging information from the intensity information by using at least the distance information, and a reconstruction unit that generates the imaging information by using the intensity information.

Abstract: A waveform discrimination device includes: a waveform detector receiving waveforms of pulses to be measured and converting the waveforms to electrical signals; an analog amplifier expanding transient waveforms of the electrical signals along a time-domain axis; an AD converter converting the electrical signals to digital data in rise and fall times of the electrical signals; and a signal processing circuit calculating a characteristic-amount of the rise time as a point on a first coordinate axis by using the digital data, and calculating a characteristic-amount of the fall time as a point on a second coordinate axis, so as to define a set of the points on the first and second coordinate axes as a coordinate point, and plot the coordinate point on a discrimination plane, wherein, by plotted positions of the coordinate point, whether the pulses has a first waveform or a second waveform is discriminated.

Abstract: A radiation dosimeter includes: a radiation detector that detects radiation; a shield member that covers the radiation detector; and a microcomputer that calculates a dose of radiation based on energy of radiation detected by the radiation detector and a conversion factor that is defined in accordance with energy of radiation scattered by the shield member. The radiation detector detects the radiation scattered by the shield member.