1. A radiographic imaging device, comprising: a detecting section that detects a dose of radiation that has been irradiated, in a case in which a radiographic image corresponding to irradiated radiation is imaged; an image acquisition section that acquires the radiographic image; a storage section that stores the radiographic image; and a control section that, in a case in which a determination is made such that a timing for imaging the radiographic image has been falsely detected on the basis of the dose of radiation that has been detected by the detecting section, performs control so as to dispose of the radiographic image acquired by the image acquisition section, or to store the acquired radiographic image at the storage section together with information indicating that the radiographic image was imaged with a false detection; wherein the control section does not determine that a false detection has been made 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.