Disclosed herein are a radiographic imaging apparatus, a radiation irradiation apparatus, and a method of controlling the radiographic imaging apparatus. The radiographic imaging apparatus comprises a radiation detector, a first support configured to enable the radiation detector to move in at least one direction of a up direction and a down direction, a first brake configured to stop the radiation detector at a plurality of positions and an image processor configured to synthesize a plurality of electrical signals output by the radiation detector at the plurality of positions to generate at least one radiation image.
