Radiation imaging apparatus, radiation imaging system, control method of radiation imaging apparatus, and non-transitory computer-readable storage medium

A control method of a radiation imaging apparatus including a plurality of pixels configured to acquire a radiation image, and a readout circuit configured to read out a plurality of signals from the plurality of pixels, comprising:

• acquiring, to perform offset correction, correction image data from the plurality of pixels in an acquisition mode, which is defined by an estimated value based on at least one of the plurality of signals output from the plurality of pixels based on an imaging mode set by a user, and system noise generated when the readout circuit reads out the plurality of signals.

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a control method of a radiation imaging apparatus including a plurality of pixels used to acquire a radiation image, and a readout circuit configured to read out a plurality of signals from the plurality of pixels, comprising:

• acquiring, to perform offset correction, correction image data from the plurality of pixels in an acquisition mode, which is defined by an estimated value based on at least one of the plurality of signals output from the plurality of pixels based on an imaging mode set by a user, and system noise generated when the readout circuit reads out the plurality of signals.