Radiation image sensing apparatus, radiation image sensing system, control method for radiation image sensing apparatus, and non-transitory computer-readable storage medium

A control method of a radiation image sensing apparatus comprising an image sensing area configured to be used in image sensing operations of acquiring a radiation image corresponding to incidence of radiation, the image sensing area comprising a plurality of first pixels each including a conversion element, a second pixel comprising a detection element and a switching element configured to detect radiation entering the image sensing area, and a readout unit, the method comprising the steps of:

• a first step of resetting first charges in the detection element generated during incidence of radiation to the detection element in a first image sensing operation by turning on the switching element after an end of incidence of radiation in the first image sensing operation;
• a second step of acquiring a correction signal obtained from second charges that remain after resetting the first charges in detection element read out from the detection element via the switching element which is turned on by the readout unit;
• a third step of reading out a detection signal from the detection element by the readout unit during the incidence of the radiation in a second image sensing operation performed next to the second step;
• and
• a fourth step of correcting the detection signal in accordance with a correction amount based on the correction signal, and detecting an incident radiation dose based on the corrected detection signal.

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a control method of a radiation image sensing apparatus comprising an image sensing area configured to be used in image sensing operations of acquiring a radiation image corresponding to incidence of radiation, the image sensing area comprising a plurality of first pixels each including a conversion element, a second pixel comprising a detection element and a switching element configured to detect radiation entering the image sensing area, and a readout unit, the method comprising the steps of:

• a first step of resetting first charges in the detection element, that are generated during incidence of radiation to the detection element in a first image sensing operation, by turning on the switching element after an end of incidence of the radiation in the first image sensing operation;
• a second step of acquiring a correction signal obtained from second charges that remain after resetting the first charges in the detection element read out from the detection element via the switching element which is thereafter turned on by the readout unit;
• a third step of reading out a detection signal from the detection element by the readout unit during the incidence of the radiation in a second image sensing operation performed next to the second step;
• and
• a fourth step of correcting the detection signal in accordance with a correction amount based on the correction signal, and detecting an incident radiation dose based on the corrected detection signal.