Image sensor driving apparatus, method and radiation imaging apparatus

An imaging apparatus comprising:

• a plurality of pixel circuits that are two dimensionally arrayed, each of which outputs an analog signal corresponding to radiation;
• a control unit configured to control scanning of the plurality of pixel circuits, to read out the analog signal from each of the plurality of pixel circuits;
• an image-data circuit configured to output image data corresponding to the analog signal read out from each of the plurality of pixel circuits and to output a reference signal value corresponding to an analog reference signal, in order to obtain a target value;
• and
• a correction circuit configured to correct the analog signal read out from each of the plurality of pixel circuits,
• wherein the correction circuit corrects the signal read out from each of the plurality of pixel circuits by supplying to the image-data circuit an analog correction value signal to be added to the analog signal, the analog correction value signal being a variation from the target value obtained based on the reference signal value output from the image-data circuit prior to execution of the control by the control unit, and
• wherein the reference signal value is based on a value of a first pixel in each line of the plurality of pixel circuits.