PROBLEM TO BE SOLVED: To control a radiation irradiation dose with a high degree of precision.SOLUTION: A control device capable of communicating with a radiographic device includes an acquisition part for acquiring information on an accumulated dose of the radiation irradiated under a predetermined irradiation condition for the radiographic device, and a control part for controlling the timing at which a radiation irradiation stop signal is output based on dose information for a period in which a dose of the radiation acquired for each irradiation condition beforehand is non-steady, and the information on an accumulated dose.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2018,JPO&INPIT【課題】高い精度で放射線の照射線量を制御する。【解決手段】放射線撮影装置と通信可能な制御装置であって、放射線撮影装置に対して所定の照射条件で照射された放射線の累積線量の情報を取得する取得部と、照射条件ごとに予め取得された放射線の線量が非定常な期間の線量情報と、累積線量の情報とに基づいて、放射線の照射停止信号を出力するタイミングを制御する制御部とを備える。【選択図】 図4