1. A radiographic imaging device, comprising: a detecting section that detects a dose of radiation that has been irradiated when imaging a radiographic image corresponding to irradiated radiation; an image acquisition section that acquires the radiographic image; a storage section that stores the radiographic image; and a control section that determines whether or not the radiation has been falsely detected on the basis of the dose of radiation that has been detected by the detecting section, and that controls the storage section so as to store the radiographic image in a case in which the determining section determines that the detected irradiation of radiation is not a false detection, wherein the control section determines that a false detection is not present in a case in which the dose of radiation detected by the detecting section reaches a predetermined threshold value within a predetermined period from commencement of detection of the dose of radiation.