Patent ID: 7916835

Claim:
An X-ray imaging apparatus comprising: an X-ray collimator control unit adapted to control an X-ray collimator shape; an X-ray irradiation unit adapted to irradiate X-rays in accordance with the X-ray collimator shape; an X-ray imaging unit adapted to receive the X-rays irradiated by said X-ray irradiation unit and acquire a radiograph on the basis of the X-rays and be movable; a perpendicularity determination unit adapted to determine, on the basis of a comparison between the X-ray collimator shape and the radiograph, whether an X-ray irradiation direction of said X-ray irradiation unit is perpendicular to a light-receiving surface by which said X-ray imaging unit receives the X-rays; and an irradiation control unit adapted to stop X-ray irradiation by said X-ray irradiation unit on the basis of a determination result obtained by said perpendicularity determination unit, wherein if said perpendicularity determination unit determines in a still image shooting mode that the X-ray irradiation direction is perpendicular to the light-receiving surface, said irradiation control unit is configured to switch to a movie shooting mode.