To make synchronization more appropriate between a clock for obtaining a timing of radiation application and a clock for obtaining a timing of radiographic imaging.SOLUTION: In a radiographic system having an application control device for controlling radiation application and a radiographic apparatus for radiographic imaging connected communicatably with each other, the application control device contains a first clock for providing a time value of radiation application timing, and the radiographic apparatus contains a second clock for providing a time value of imaging timing. The radiographic system includes: a measurement unit for measuring a time difference between the time value of the first clock and the time value of the second clock； a correction unit which can execute a plurality of correction processes each with a different correction period to correct one of the first and second clocks for resolving a measured time difference； and a selection unit for selecting, based on an operation state of the radiographic apparatus, a correction process to be executed by the correction unit from the plurality of correction processed.SELECTED DRAWING: Figure 1【課題】放射線照射のタイミングを得るための時計と放射線撮影のタイミングを得るための時計の同期をより適切に行う。【解決手段】放射線の照射を制御する照射制御装置と放射撮影を行う放射線撮影装置とが通信可能に接続された放射線撮影システムにおいて、照射制御装置は照射タイミングのための時刻値を提供する第１の時計を、放射線撮影装置は撮影タイミングのための時刻値を提供する第２の時計を、それぞれ内蔵する。放射線撮影システムは、第１の時計の時刻値と第２の時計の時刻値の時刻差を測定する測定部と、測定された時刻差を解消するように第１の時計と第２の時計のうちの一方の時計を補正するための、補正期間が異なる複数の補正処理を実行可能な補正部と、放射線撮影装置の動作状態に基づいて、補正部に実行させる補正処理を前記複数の補正処理から選択する選択部と、を有する。【選択図】図１
