Patent ID: 8829455

Claim:
A radiographic imaging device comprising: a radiation detector provided with a plurality of radiation image acquisition pixels that are arranged in an array in an imaging region of a radiation image, the radiation image acquisition pixels being configured to acquire information of pixels that form image information representing the radiation image by respectively converting irradiated radiation to charges and accumulating the charges, and a plurality of radiation detection pixels that detect a radiation state of irradiated radiation by respectively converting irradiated radiation to charges and accumulating the charges, the information acquired by the plurality of radiation detection pixels not forming image information representing the radiation image, the radiation detection pixels being disposed in the imaging region and a characteristic of the radiation detection pixels being alterable; an acquisition unit that acquires an imaging condition of the radiation image; and a setting unit that sets the characteristic in accordance with the imaging condition acquired by the acquisition unit; amplifiers that amplify signals represented by the charges accumulated by the radiation detection pixels by a pre-specified amplification ratio, wherein the setting unit sets the characteristic by setting the amplification ratio in accordance with the imaging condition; and a detection unit that detects the start of an irradiation of radiation and the end of an irradiation of radiation using mutually different radiation detection pixels, wherein the setting unit sets the amplification ratio of the amplifiers that correspond with the radiation detection pixels that are used for detecting the radiation irradiation start to be higher than the amplification ratio of the amplifiers that correspond with the radiation detection pixels that are used for detecting the radiation irradiation end.