Abstract: A radiation image capturing device including an image capturing region in which pixels are arranged, signal lines, a signal processor, and a driver is provided. The pixels include image capturing pixels and detection pixels for acquiring irradiation information. The image capturing region includes receptor fields each constituted by a predetermined number of pixels which are continuous in a row direction and a column direction. Each receptor field includes detection regions each including one or more detection pixel, the detection regions being connected to different signal lines for each of detection regions in each receptor field. The signal processor acquires the irradiation information based on signals supplied from detection pixels arranged in each of the detection regions by causing the driver to drive detection pixels which are arranged in a receptor field set for acquisition of the irradiation information.

Abstract: A radiation detector includes a pixel matrix a plurality of first drive lines for driving, and a plurality of second drive lines, wherein a first pixel row of the pixel matrix is a pixel row that is neighbored by the first drive line and also by the second drive line, wherein an average area of an opening portion of the image capturing pixel included in the first pixel row and an opening portion of the detection pixel is a first average area, and wherein an error of an area of each opening portion of all image capturing pixels and all detection pixels included in the first pixel row falls within 1% of the first average area.

Abstract: An apparatus includes a plurality of pixels each including a conversion element, and a shielding layer covering the conversion element, wherein the shielding layer is provided to cover at least a part of an aperture of the conversion element so that an aperture modulated transfer function (MTF) at a predetermined frequency of a signal obtained from the conversion element becomes less than or equal to a predetermined value.

Abstract: An apparatus comprises a plurality of pixels each including a conversion element and a switch, a driving circuit configured to control the switches via drive lines, a bias power supply unit configured to supply a bias potential to the conversion element via a bias line, column signal lines to which signals are output from the plurality of pixels, and a detection unit. The plurality of pixels include a first pixel and a second pixel, which are adjacent to each other in the row direction and are connected to a common column signal line. The switch of the first pixel and the switch of the second pixel are connected to drive lines different from each other. The detection unit determines presence/absence of radiation irradiation based on a current flowing to the bias line.

Abstract: A radiation imaging apparatus includes a radiation detector configured to be subjected to an incident radiation to obtain a radiation image, and controllers configured to acquire radiation dose information, acquire imaging condition information for radiation imaging for subjecting the radiation detector to the incident radiation for up to a target radiation dose to acquire a radiation image, and issue, in a case where, after a start of the radiation imaging based on the imaging condition information, radiation dose information acquired by a predetermined timing does not satisfy a predetermined condition, a notification for stopping the radiation irradiation by a radiation generation apparatus so that the radiation irradiation by the radiation generation apparatus stops before the incident radiation dose reaches the target radiation dose, wherein the predetermined timing is a timing determined based on radiation irradiation time set in the radiation generation apparatus.

Abstract: An apparatus includes a plurality of pixels each including a conversion element, and a shielding layer covering the conversion element, wherein the shielding layer is provided to cover at least a part of an aperture of the conversion element so that an aperture modulated transfer function (MTF) at a predetermined frequency of a signal obtained from the conversion element becomes less than or equal to a predetermined value.

Abstract: In a period between an operation for acquiring signals for an image via an amplification unit and an operation for acquiring offset signals for correcting the image via the amplification unit, a current supply capability of the amplification unit is made equal to a current supply capability in a period immediately before the image is acquired, thereby the potential state of a signal line when the signals for the image are acquired and the potential state when the offset signals for correcting the image are acquired are matched, and an artifact when the correction is made is reduced.

Abstract: A difference in wiring capacitance between bias lines is reduced by equalizing, for pixels A connected to a signal line from a first direction and pixels B connected to the signal line from a second direction, the numbers of the pixels A and the pixels B where the pixels A and the pixels B are each connected to the corresponding bias line.

Abstract: A radiation imaging apparatus comprising a first scintillator, a second scintillator which receives radiation transmitted through the first scintillator, conversion elements and a controller is provided. The conversion elements include first conversion elements and second conversion elements with different sensitivities for detecting light emitted from at least one of the first scintillator or the second scintillator. During radiation irradiation, the controller obtains, from a signal output from one or more measuring element configured to measure a dose of incident radiation, a first signal corresponding to light converted from radiation by the second scintillator, and outputs, based on the first signal, a stop signal configured to stop the radiation irradiation, and after the radiation irradiation, the controller causes the first conversion elements and the second conversion elements to output signals configured to generate an energy subtraction image.

Abstract: A difference in wiring capacitance between bias lines is reduced by equalizing, for pixels A connected to a signal line from a first direction and pixels B connected to the signal line from a second direction, the numbers of the pixels A and the pixels B where the pixels A and the pixels B are each connected to the corresponding bias line.

Abstract: An imaging apparatus includes a pixel region including a plurality of pixels, and bias wiring laid on a light incident side of pixels to supply a bias from a power supply to the pixels in the pixel region via a second side defining the pixel region. The bias wiring includes first wiring portions and second wiring portions laid around the pixels. The first wiring portions are laid in a Y direction away from the second side, and the second wiring portions are laid in an X direction orthogonal to the Y direction. The first wiring portions include a light non-transmissive member. A resistance of the first wiring portion per pixel is smaller than that of the second wiring portion per pixel. A loss of light due to the second wiring portion is smaller than that of the light incident due to the first wiring portion.

Abstract: In a period between an operation for acquiring signals for an image via an amplification unit and an operation for acquiring offset signals for correcting the image via the amplification unit, a current supply capability of the amplification unit is made equal to a current supply capability in a period immediately before the image is acquired, thereby the potential state of a signal line when the signals for the image are acquired and the potential state when the offset signals for correcting the image are acquired are matched, and an artifact when the correction is made is reduced.

Abstract: A radiation imaging apparatus comprising a first scintillator, a second scintillator which receives radiation transmitted through the first scintillator, conversion elements and a controller is provided. The conversion elements include first conversion elements and second conversion elements with different sensitivities for detecting light emitted from at least one of the first scintillator or the second scintillator. During radiation irradiation, the controller obtains, from a signal output from one or more measuring element configured to measure a dose of incident radiation, a first signal corresponding to light converted from radiation by the second scintillator, and outputs, based on the first signal, a stop signal configured to stop the radiation irradiation, and after the radiation irradiation, the controller causes the first conversion elements and the second conversion elements to output signals configured to generate an energy subtraction image.

Abstract: The present invention provides a technique advantageous in suitably determining the irradiation end timing in a radiation imaging apparatus that can perform AEC. The radiation imaging apparatus comprises a sensor configured to detect radiation and a control unit, wherein the control unit generates, after the start of radiation irradiation, an evaluation value indicating the stability of a radiation irradiation intensity based on a sensor signal from the sensor, and the control unit outputs, in response to the evaluation value satisfying a predetermined condition, a signal indicating that the radiation irradiation intensity has stabilized.

Abstract: An apparatus comprises a plurality of pixels each including a conversion element and a switch, a driving circuit configured to control the switches via drive lines, a bias power supply unit configured to supply a bias potential to the conversion element via a bias line, column signal lines to which signals are output from the plurality of pixels, and a detection unit. The plurality of pixels include a first pixel and a second pixel, which are adjacent to each other in the row direction and are connected to a common column signal line. The switch of the first pixel and the switch of the second pixel are connected to drive lines different from each other. The detection unit determines presence/absence of radiation irradiation based on a current flowing to the bias line.

Abstract: A radiation imaging apparatus includes a first detection pixel including a first switch element, a second detection pixel including a second switch element and having sensitivity which is different from that of the first detection pixel, a first signal line, a second signal line, a reading circuit which performs a first operation of reading first and second signals which appear in the first and second signal lines in a state in which the first and second switch elements are in a non-conductive state while the radiation imaging apparatus is irradiated with a radial ray and a second operation of reading third and fourth signals which appear in the first and second signal lines when the first and second switch elements are brought into a conductive state, and an information processing circuit which performs a process of generating information based on the first to fourth signals.

Abstract: A radiographic imaging apparatus includes a pixel, a readout unit, and a signal processing unit. The pixel includes a switch configured to connect a conversion element configured to convert radiation into an electric signal to a signal line. The readout unit is configured to perform a first operation of reading out a first signal appearing in the signal line when the switch is not in a conductive state and a second operation of reading out a second signal appearing in the signal line when the switch is in a conductive state. The read out unit is configured to perform the first operation before performing the second operation a plurality of times consecutively. The signal processing unit is configured to perform signal processing for outputting information indicating irradiation of the radiographic imaging apparatus by the radiation based on the first signal and the second signal.

Abstract: An imaging apparatus includes a pixel region including a plurality of pixels, and bias wiring laid on a light incident side of pixels to supply a bias from a power supply to the pixels in the pixel region via a second side defining the pixel region. The bias wiring includes first wiring portions and second wiring portions laid around the pixels. The first wiring portions are laid in a Y direction away from the second side, and the second wiring portions are laid in an X direction orthogonal to the Y direction. The first wiring portions include a light non-transmissive member. A resistance of the first wiring portion per pixel is smaller than that of the second wiring portion per pixel. A loss of light due to the second wiring portion is smaller than that of the light incident due to the first wiring portion.

Abstract: A radiation imaging apparatus comprises a sensor portion including a pixel array configured to acquire an image signal corresponding to radiation, and a plurality of detection elements arranged in the pixel array and configured to detect the radiation, and a readout circuit configured to read out the image signal from the sensor portion, wherein the readout circuit includes a signal processing circuit arranged to combine and process signals from the plurality of detection elements if determining the presence or absence of radiation irradiation, and to process a signal for each detection element or combine and process signals from a number of detection elements from among the plurality of detection elements, the number being less than the number of detection elements that include the plurality of detection elements, if determining a radiation dose.

Abstract: The present invention provides a technique advantageous in suitably determining the irradiation end timing in a radiation imaging apparatus that can perform AEC. The radiation imaging apparatus comprises a sensor configured to detect radiation and a control unit, wherein the control unit generates, after the start of radiation irradiation, an evaluation value indicating the stability of a radiation irradiation intensity based on a sensor signal from the sensor, and the control unit outputs, in response to the evaluation value satisfying a predetermined condition, a signal indicating that the radiation irradiation intensity has stabilized.