Patent ID: 8050383

Claim:
A radiographic apparatus comprising: an irradiation unit that irradiates a subject with radiation; an image data generator, configured to detect radiation over a detection area, which detects radiation that has been transmitted through the subject, and which generates corresponding image data; an aperture that regulates an irradiation range of the radiation with which the subject is to be irradiated from the irradiation unit; an aperture controller that controls an opening area of the aperture; an irradiation area calculation unit that calculates an irradiation area of the irradiation range on the basis of the opening area of the aperture; a controller that controls the irradiation of the subject with the radiation by the irradiation unit on the basis of a comparison result between the irradiation area and the detection area; a radiation amount detection unit that detects an amount of the radiation that has passed through the aperture; a region information input unit that inputs region information relating to a region of the subject that is to be irradiated with the radiation; and a radiation amount calculation unit that calculates an amount of the radiation with which the subject has been irradiated on the basis of the radiation amount detected by the radiation amount detection unit, the region information inputted by the region information input unit and the image data generated by the image data generator.