PROBLEM TO BE SOLVED: To reduce a load on a user by reducing the frequency of a longer photographing waiting time compared with a case where calibration is normally performed when a power supply of a portable radiographic image capture device is changed from off to on.SOLUTION: When a power supply of an electronic cassette 32 is turned off, a time for the off state of the power supply is measured. Control is performed such that, if the measured time is equal to or greater than a threshold, calibration is performed in the electronic cassette 32 when the power supply of the electronic cassette 32 is changed from off to on, and such that if the measured time is less than the threshold, the calibration is not performed in the electronic cassette 32 when the power supply of the electronic cassette 32 is changed from off to on.COPYRIGHT: (C)2012,JPO&INPIT【課題】可搬型放射線画像撮影装置の電源がオフ状態からオン状態になったときに常にキャリブレーションを行なう場合に比べて、長い撮影待ち時間が発生する頻度を低減させ、ユーザの負担を軽減する。【解決手段】電子カセッテ32の電源がオフ状態になった場合に、電源がオフ状態の時間を計測し、計測された時間が閾値以上の場合には、電子カセッテ32の電源がオフ状態からオン状態になったときに電子カセッテ32でキャリブレーションが行なわれ、計測された時間が閾値未満の場合には、電子カセッテ32の電源がオフ状態からオン状態になったときに電子カセッテ32でキャリブレーションが行なわれないように制御する。【選択図】図2
