Provided is a radiation imaging apparatus, including: a plurality of pixels configured to output image signals corresponding to radiation； an image signal line configured to output the image signals； and a detection signal line configured to output a detection signal for detection of irradiation of the radiation, in which at least one of the plurality of pixels includes: a conversion element configured to convert the radiation into charge； a first switch configured to output the image signal corresponding to the charge via the image signal line； a storage capacitor including a first electrode and a second electrode, in which the first electrode is electrically connected to the conversion element to store the charge； and a second switch configured to electrically connect the second electrode and the detection signal line.
