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: A radiation imaging apparatus is provided. The apparatus includes a substrate in which conversion elements are arranged and which transmits light beams, a first scintillator arranged on a first surface side of the substrate, and a second scintillator arranged on a second surface side opposite to the first surface. The conversion elements include first conversion elements and second conversion elements. The first conversion elements are arranged so as to receive light beams from the first scintillator and the second scintillator. A light-shielding layer is arranged between the first scintillator and each of the second conversion elements so as to set light amounts of the second conversion elements from the first scintillator smaller than those of the first conversion elements from the first scintillator, and the second conversion elements are arranged to receive a light beam from the second scintillator.

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: A radiation image sensing apparatus is provided. The apparatus comprises an image sensing area where conversion elements are arranged and used in an image sensing operation of acquiring a radiation image, a detection element configured to detect a radiation dose of radiation entering the image sensing area, a readout unit and a controller. The controller corrects a detection signal read out from the detection element by the readout unit during incidence of radiation in a second image sensing operation performed next to a first image sensing operation, based on a correction amount acquired based on a correction signal read out from the detection element by the readout unit after an end of the incidence of the radiation in the first image sensing operation, and detects a dose of incident radiation in the second image sensing operation based on the corrected detection signal.

Abstract: A radiation imaging apparatus is provided. The apparatus comprises pixels arranged in an image sensing region, a first and a second detecting elements configured to obtain radiation irradiation information, a first signal line to which a signal from the first detecting element is to be output and a second signal line to which a signal from the second detecting element is to be output, and a signal processing circuit configured to process the signals output from the first and the second detecting elements. The first the second signal lines are arranged in the image sensing region or arranged adjacent to the image sensing region, the first detecting element has a larger region to detect radiation than the second detecting element. The signal processing circuit generates the radiation irradiation information based on the signals from the first and the second signal lines.

Abstract: A radiation imaging apparatus is provided. The apparatus comprises: an imaging region in which a plurality of conversion elements are arranged, wherein the plurality of conversion elements includes a first conversion element configured to obtain a radiation image and a second conversion element configured to obtain irradiation information of incident radiation during radiation irradiation; a storage unit configured to store correction data for correcting a signal output from the first conversion element; and a control unit. The control unit determines a period to cause the first conversion element to perform an accumulation operation in accordance with the irradiation information, determines a correction amount corresponding to the period based on the correction data, and generates a radiation image signal by correcting a signal output from the first conversion element in accordance with the correction amount after the radiation irradiation.

Abstract: A radiation imaging apparatus comprising an imaging unit configured to generate a radiation image, a detector configured to detect radiation to monitor an incident dose, a processor including an amplifier and configured to perform processing of reading out signals from the imaging unit and the detector and outputting a signal based on the readout signals, and a controller configured to control the processor is provided. The controller causes the processor to operate in a first power consumption mode before radiation irradiation and perform a reset operation, and causes the processor to operate in a second power consumption mode with higher power consumption than the first power consumption mode in accordance with information indicating a start of radiation irradiation, and causes the processor to start outputting a signal for monitoring an incident dose based on a signal read out from the detector.

Abstract: A radiation imaging apparatus including conversion elements acquiring a radiation image and detectors, a readout unit and a controller is provided. In a first operation, the controller causes the readout unit to output a composition signal obtained by composing signals from the detectors, detects irradiation with radiation based on the composition signal, and shifts to a second operation. In the second operation, the controller acquires first signals individually read out from the detectors, decides a signal component, of the composition signal, which is output from a selected detector of the detectors in accordance with a ratio of the first signal from the selected detector to a sum of the first signals, and acquires an integrated dose of radiation incident on the selected detector based on the signal component and the first signal of the selected detector.

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 radiation imaging apparatus includes a plurality of pixels, each of which includes a conversion element and a transistor, a plurality of drive lines connected to gates of the transistors, a drive circuit unit configured to supply a voltage to the plurality of drive lines, and a control unit configured to control the drive circuit unit. The control unit performs control of causing the drive circuit unit to apply a different voltage that is between the OFF voltage and the ON voltage and is different from the OFF voltage and the ON voltage to the plurality of drive lines in a different period different from a period in which storage control is performed and a period in which read control is performed.

Abstract: A radiation imaging apparatus includes a pixel portion in which a plurality of pixels, each pixel including a conversion element configured to convert radiation into charge, are arranged in a matrix, a driving circuit configured to drive a plurality of driving lines and a processing unit configured to process a signal from the pixel portion. The driving circuit performs a reset operation in which the conversion elements of the plurality of pixels are repetitively reset. The pixel portion includes rows in which the pixels have been divided into a plurality of groups. The conversion elements of the plurality of groups are reset at different timings in the reset operation, and the processing unit corrects, by using a signal of a pixel of another group, a signal of a pixel of a group with data deficiency caused by the reset operation.

Abstract: A radiation imaging apparatus including conversion elements acquiring a radiation image and detectors, a readout unit and a controller is provided. In a first operation, the controller causes the readout unit to output a composition signal obtained by composing signals from the detectors, detects irradiation with radiation based on the composition signal, and shifts to a second operation. In the second operation, the controller acquires first signals individually read out from the detectors, decides a signal component, of the composition signal, which is output from a selected detector of the detectors in accordance with a ratio of the first signal from the selected detector to a sum of the first signals, and acquires an integrated dose of radiation incident on the selected detector based on the signal component and the first signal of the selected detector.

Abstract: Provided is a radiation imaging apparatus, including: a plurality of pixels configured to output image signals corresponding to radiation; an image signal line configured to output the image signals; and a detection signal line configured to output a detection signal for detection of irradiation of the radiation, in which at least one of the plurality of pixels includes: a conversion element configured to convert the radiation into charge; a first switch configured to output the image signal corresponding to the charge via the image signal line; a storage capacitor including a first electrode and a second electrode, in which the first electrode is electrically connected to the conversion element to store the charge; and a second switch configured to electrically connect the second electrode and the detection signal line.

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: 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: 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: A radiation imaging apparatus includes a radiation detection unit including a plurality of sensors which detect radiation, and a monitoring unit which monitors irradiation of radiation based on signals detected by the plurality of sensors. The monitoring unit determines a plurality of effective sensor candidates from the plurality of sensors, and determines effective sensor(s) from effective sensor candidates excluding certain effective sensor candidates of the plurality of effective sensor candidates, the certain effective sensor candidates being an effective sensor candidate which has detected a signal having a maximum value and an effective sensor candidate which has detected a signal having a minimum value. The monitoring unit monitors irradiation of radiation based on signal(s) detected by the effective sensor(s).

Abstract: An apparatus includes a plurality of imaging pixels configured to acquire a radiation image, a plurality of detection pixels each including a detection conversion element and a detection switch element, a drive unit configured to drive the detection switch element of each of the plurality of detection pixels, a plurality of detection regions in each of which the plurality of detection pixels are arranged, a control unit configured to control the drive unit to drive the plurality of detection pixels arranged in each of the plurality of detection regions at respective different timing, and an acquisition unit configured to acquire an amount of incidence of radiation rays on each of the plurality of detection regions based on a value obtained by summing or averaging signals read out from the plurality of detection pixels.

Abstract: An apparatus includes a detecting pixel including a converting element and a switch element, a different pixel includes a different converting element and a different switch element, a signal line connected in common to a plurality of the switch elements, a driving unit configured to drive the different switch element and the switch element, and a control unit configured to control the driving unit, wherein the control unit controls the driving unit such that in a case where an on-state voltage or an off-state voltage is applied to at least one switch element, a voltage of opposite polarity to the on-state voltage or the off-state voltage is applied to a different switch element that is different from the at least one switch element or a voltage of opposite polarity to the on-state voltage or the off-state voltage is applied to the different switch element.

Abstract: A radiation imaging apparatus is provided. The apparatus comprises pixels arranged in an image sensing region, a first and a second detecting elements configured to obtain radiation irradiation information, a first signal line to which a signal from the first detecting element is to be output and a second signal line to which a signal from the second detecting element is to be output, and a signal processing circuit configured to process the signals output from the first and the second detecting elements. The first the second signal lines are arranged in the image sensing region or arranged adjacent to the image sensing region, the first detecting element has a larger region to detect radiation than the second detecting element. The signal processing circuit generates the radiation irradiation information based on the signals from the first and the second signal lines.