PROBLEM TO BE SOLVED: To heighten the continuity of photographing in split photographing with radiation rays, and to reduce operators repeated trouble and wasteful exposure to a subject.SOLUTION: When the state of an irradiation switch for designating irradiation of X-rays is detected by an irradiation switch state detecting means and the stop of designation for X-ray irradiation is detected during the continuation of split-photographing, information for urging an operator to continue photographing, photograph over again, and stop photographing is shown to the operator to avoid unintended interruption of photographing.COPYRIGHT: (C)2011,JPO&INPIT【課題】放射線の分割撮影時における撮影の継続性を高め、操作者の二度手間や被写体への無駄な被曝を軽減する。【解決手段】分割撮影を継続中、照射スイッチ状態検知手段によって放射線照射を指示する照射スイッチの状態を検出し、放射線照射の指示の停止を検出すると、撮影の継続、撮影のやり直し、撮影の中止を促す情報を操作者に示すことで、意図しない撮影の中断を避ける。【選択図】 図5