RADIATION IMAGING APPARATUS AND RADIATION IMAGING SYSTEM

A radiation imaging apparatus includes a radiation detector configured to be subjected to an incident radiation to obtain a radiation image, and controllers configured to acquire radiation dose information, acquire imaging condition information for radiation imaging for subjecting the radiation detector to the incident radiation for up to a target radiation dose to acquire a radiation image, and issue, in a case where, after a start of the radiation imaging based on the imaging condition information, radiation dose information acquired by a predetermined timing does not satisfy a predetermined condition, a notification for stopping the radiation irradiation by a radiation generation apparatus so that the radiation irradiation by the radiation generation apparatus stops before the incident radiation dose reaches the target radiation dose, wherein the predetermined timing is a timing determined based on radiation irradiation time set in the radiation generation apparatus.