Abstract: The invention provides a radiation irradiation device that can appropriately manage the residual capacity of a battery without being influenced by the internal resistance of the battery. The radiation irradiation device includes a radiation generating part that generates radiation; a battery part that supplies electric power to the radiation generating part; and a residual capacity calculation part that calculates the residual capacity of the battery part. The residual capacity calculation part calculates the residual capacity of the battery part on the basis of a current flowing into the battery part, an internal resistance of the battery part, and a voltage of the battery part.

Abstract: A radiation imaging apparatus includes: a radiation irradiating apparatus that emits radiation onto a subject; a photography unit that photographs the subject to obtain a photographed image of the subject; and a radiation detector that generates radiation images of the subject, provided with a marker that represents identifying information of the radiation detector on the side thereof that includes a radiation detecting surface. The marker of the radiation detector is detected. The identifying information of the radiation detector is obtained from a marker in the case that the marker is detected.

Abstract: A radiographic imaging device includes an imaging unit that is configured to acquire a radiographic image in accordance with irradiated radiation; a storage unit that is configured to store sets of image data for plural radiographic images acquired by the imaging unit; and an identification data application unit that is configured to store identification data in the storage unit in a case in which a predetermined condition is detected, the identification data being used for partitioning, between before and after the detection of the predetermined condition, the sets of image data stored in the storage unit.