PROBLEM TO BE SOLVED: To suppress excessive radiation irradiation irrespective of a communication situation.SOLUTION: A radiation imaging system includes a detection part for detecting a dose of radiation irradiated from a radiation source, an acquisition part for acquiring a threshold time when a reached dose reaches a threshold dose based on the reached dose of the radiation reaching the detection part and time information when the reached dose is acquired, and a control part for controlling the radiation irradiation from the radiation source based on a comparison between the reached dose and the threshold dose, or a comparison between the time information measured by a control time count part and the threshold time.SELECTED DRAWING: Figure 1【課題】通信状況によらず、過剰な放射線照射を抑制すること。【解決手段】放射線撮像システムは、放射線源から照射された放射線の線量を検出する検出部と、検出部への放射線の到達線量と到達線量を取得したときの時刻情報とに基づいて、到達線量が閾値線量に到達する閾値時刻を取得する取得部と、到達線量と閾値線量との比較、または、制御計時部により計測される時刻情報と閾値時刻との比較に基づいて、放射線源からの放射線照射を制御する制御部と、を備える。【選択図】 図１
