Abstract: A control apparatus, that controls a radiation imaging apparatus in a radiation imaging system. where the radiation imaging apparatus includes a plurality of antennas for wireless local area network (LAN) communication used in transmitting a radiation image obtained by radiation imaging, obtains information about the radiation imaging system, determines at least one antenna from among the plurality of antennas as an antenna to be used for the wireless LAN communication based on the obtained information, and transmits information about the antenna to be used to the radiation imaging apparatus.

Abstract: A radiation imaging system includes an access point that performs first wireless communication with a radiation imaging apparatus that performs imaging to acquire a radiographic image, the first wireless communication being performed to control the imaging by the radiation imaging apparatus, a communication device that performs second wireless communication with the radiation imaging apparatus to make a setting to be used for the first wireless communication on the radiation imaging apparatus, and a control apparatus that controls the imaging. The control apparatus causes the communication device to perform the second wireless communication with the radiation imaging apparatus based on signal intensity of a signal received from the radiation imaging apparatus by the communication device and a predetermined number of times that the signal intensity exceeds a predetermined threshold.

Abstract: A radiation imaging apparatus is provided. The radiation imaging apparatus comprises a plurality of pixels used to acquire a radiation image, and a readout circuit configured to read out a signal from each of the plurality of pixels. Correction image data used for performing offset correction is acquired from the plurality of pixels in an acquisition mode associated with an estimated value of the signal and system noise generated when the readout circuit reads out the signal, the estimated value and the system noise being set according to an imaging mode by a user.

Abstract: A radiation detection apparatus includes a housing having an incident face and a side face, a reflective member accommodated within the housing, the reflective member having a reflective face which reflects radio waves, and an antenna element accommodated within the housing. The side face of the housing includes a conductor region and a transmissive region, the transmissive region having a higher radio wave transmittance than the conductor region. The reflective member is disposed in a position at which a first radio wave, which proceeds directly from the antenna element toward the transmissive region, and a second radio wave, which reaches the reflective face from the antenna element and is reflected toward the transmissive region by the reflective face, strengthen each other.

Abstract: A radiation detection apparatus includes a housing that includes an incidence surface and a back surface located on the opposite side of the incidence surface, a sensor panel that is housed in the housing and configured to convert radiation incident from the incidence surface into an electrical signal, a conductive plate that is housed in the housing and extends in a direction intersecting with a normal to the incidence surface, and an antenna element housed in the housing. The conductive plate is located between the sensor panel and the back surface. The antenna element is located between the conductive plate and the back surface. The antenna element includes a portion that extends in the direction intersecting with the normal to the incidence surface. The conductive plate is configured to function as a ground for the antenna element.

Abstract: A radiation imaging system comprising a radiation imaging apparatus configured to detect radiation emitted from a radiation source, an irradiation control apparatus configured to control the radiation source, a communication control apparatus configured to perform communication between the radiation imaging apparatus and the irradiation control apparatus, and a controller, is provided. The radiation imaging apparatus is configured to communicate with the communication control apparatus in accordance with a setting selected from a plurality of settings by the controller. The controller acquires a communication time for a predetermined communication amount between the radiation imaging apparatus and the communication control apparatus, and switches, in accordance with the communication time, the setting for communication of the radiation imaging apparatus with the communication control apparatus from a currently selected setting to another setting among the plurality of settings.

Abstract: A radiation imaging apparatus comprising a pixel array and a readout circuit is provided. The readout circuit includes an integrating amplifier configured to read out a signal from the pixel, a sample-and-hold circuit configured to sample an output from the integrating amplifier, and an A/D convertor configured to perform analog/digital conversion on an output from the sample-and-hold circuit and output the converted output. The apparatus performs first control and second control in parallel in an accumulation period for accumulating the signal in the pixel array. In the first control, the A/D convertor performs an analog/digital conversion operation, and in the second control, the integrating amplifier outputs a reference potential and the A/D convertor is electrically connected to a node configured to output the reference potential of the integrating amplifier.

Abstract: In a wireless communication apparatus according to the present invention, an antenna including an antenna element is disposed at a position closer to an opening of an outer housing than to a fixing member formed of an electric conductor and configured to fix the antenna, and an electric supply unit configured to supply the antenna with electric power and a first region that is positioned on an electric supply unit side of the antenna element are disposed closer to the fixing member than a second region including an open end portion of the antenna element.

Abstract: A radiation imaging apparatus includes a pixel array including n pixel rows, where n?3, and a driving circuit configured to scan the pixel array from a first row toward an nth row, counting from one end of the pixel array. In a case where a region of interest is included in a partial region composed of pixel rows from an ith row to a jth row, where 1<i?j<n, the driving circuit starts scanning of the pixel array from the first row, and starts scanning of the pixel array from the first row again during scanning of pixel rows from a (j+1)th row to the nth row.

Abstract: A radiation imaging apparatus comprising a pixel array and a readout circuit is provided. The readout circuit includes an integrating amplifier configured to read out a signal from the pixel, a sample-and-hold circuit configured to sample an output from the integrating amplifier, and an A/D convertor configured to perform analog/digital conversion on an output from the sample-and-hold circuit and output the converted output. The apparatus performs first control and second control in parallel in an accumulation period for accumulating the signal in the pixel array. In the first control, the A/D convertor performs an analog/digital conversion operation, and in the second control, the integrating amplifier outputs a reference potential and the A/D convertor is electrically connected to a node configured to output the reference potential of the integrating amplifier.

Abstract: A radiation imaging apparatus includes a pixel array arranged with a plurality of pixels including conversion units configured to convert radiation into charges and accumulate the charges, a bias line connected to the conversion units of the plurality of pixels, a bias circuit configured to supply a bias potential to the bias line and detect a current flowing in the bias line, a noise reduction circuit configured to reduce, separately from the bias circuit, noise included in the bias potential from the bias circuit, and a switch configured to connect the noise reduction circuit to the bias line.

Abstract: A radiation imaging apparatus is provided. The radiation imaging apparatus comprises a plurality of pixels used to acquire a radiation image, and a readout circuit configured to read out a signal from each of the plurality of pixels. Correction image data used for performing offset correction is acquired from the plurality of pixels in an acquisition mode associated with an estimated value of the signal and system noise generated when the readout circuit reads out the signal, the estimated value and the system noise being set according to an imaging mode by a user.

Abstract: A radiation imaging apparatus includes a pixel array arranged with a plurality of pixels including conversion units configured to convert radiation into charges and accumulate the charges, a bias line connected to the conversion units of the plurality of pixels, a bias circuit configured to supply a bias potential to the bias line and detect a current flowing in the bias line, a noise reduction circuit configured to reduce, separately from the bias circuit, noise included in the bias potential from the bias circuit, and a switch configured to connect the noise reduction circuit to the bias line.

Abstract: A radiation imaging apparatus includes a pixel array including n pixel rows, where n?3, and a driving circuit configured to scan the pixel array from a first row toward an nth row, counting from one end of the pixel array. In a case where a region of interest is included in a partial region composed of pixel rows from an ith row to a jth row, where 1<i?j<n, the driving circuit starts scanning of the pixel array from the first row, and starts scanning of the pixel array from the first row again during scanning of pixel rows from a (j+1)th row to the nth row.