Radiation detection apparatus for changing sensitivity of radiation sensing during control for radiation imaging, method of controlling the same, and non-transitory computer-readable storage medium

A radiation detection apparatus comprising:

• a plurality of pixels for obtaining X-ray radiation image data based on charges corresponding to X-ray radiation irradiated from a radiation generator through radiation imaging;
• a controller configured to perform controls for the radiation imaging to the plurality of pixels;
• and
• a sensing circuit configured to execute sensing whether or not the radiation irradiation to the plurality of pixels has been started by comparing at least one of information which is obtained from the plurality of pixels and obtained separately from the X-ray radiation image and information which is obtained from a X-ray radiation sensing sensor provided separately from the plurality of pixels, with a threshold,
• wherein the sensing circuit executes the sensing while changing sensing sensitivity of the sensor by changing the threshold, in a period during which the controller performs controls for the radiation imaging for obtaining X-ray radiation image data, and
• wherein the controller accumulates the charges on the plurality of pixels in accordance with the sensing.

A method of controlling a radiation detection apparatus having a plurality of pixels for obtaining X-ray radiation image data based on charges corresponding to X-ray radiation irradiated from a radiation generator through radiation imaging, a controller configured to perform controls for the radiation imaging to the plurality of pixels, and a sensing circuit configured to execute sensing whether or not the radiation irradiation to the plurality of pixels has been started, based on at least one of information which is obtained from the plurality of pixels and obtained separately from the X-ray radiation image and information which is obtained from a X-ray radiation sensing sensor provided separately from the plurality of pixels, the method comprising:

• executing, by the sensing circuit, the sensing while changing sensing sensitivity of the sensor so that the sensing sensitivity in a first period, in a period during which the controller performs controls for the radiation imaging for obtaining X-ray radiation image data, is higher than the sensing sensitivity in a second period, in the period during which the controller performs controls for the radiation imaging for obtaining the X-ray radiation image data, having a lower probability of the radiation irradiation than the first period;
• and
• accumulating, by the controller, the charges on the plurality of pixels in accordance with the sensing.

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a method of controlling a radiation detection apparatus having a plurality of pixels for obtaining X-ray radiation image data based on charges corresponding to X-ray radiation irradiated from a radiation generator through radiation imaging;

• a controller configured to perform controls for the radiation imaging to the plurality of pixels, and a sensing circuit configured to execute sensing whether or not the radiation irradiation to the plurality of pixels has been started, based on at least one of information which is obtained from the plurality of pixels and obtained separately from the X-ray radiation image and information which is obtained from a X-ray radiation sensing sensor provided separately from the plurality of pixels, the method comprising:
• executing, by the sensing circuit, the sensing while changing sensing sensitivity of the sensor so that the sensing sensitivity in a first period, in a period during which the controller performs controls for the radiation imaging for obtaining X-ray radiation image data, is higher than the sensing sensitivity in a second period, in the period during which the controller performs controls for the radiation imaging for obtaining the X-ray radiation image data, having a lower probability of the radiation irradiation than the first period;
• and
• accumulating, by the controller, the charges on the plurality of pixels in accordance with the sensing.