A dynamic radiographic imaging system includes a detecting section that detects periodic changes of a predetermined site of a subject； a recommended imaging (start) timing specifying section that specifies a recommended imaging start timing based on the detection result； a notifying section that makes a notification to a photographer in multiple stages as the recommended imaging start timing approaches； an operation unit that receives an instruction input from the photographer to start radiation imaging of the subject； and an image capturing control section that controls the radiation imaging in response to the instruction input by the operation unit. The dynamic radiographic imaging thus can be performed at an appropriate imaging timing without depending on the level of skill of the photographer for the body site that periodically changes such as the heart.
