PROBLEM TO BE SOLVED: To provide an X-ray imaging apparatus in which an X-ray irradiation device and an X-ray detector are separately composed, so as to enable easy and accurate positioning of an X-ray tube and the X-ray detector.SOLUTION: The X-ray imaging apparatus includes: an X-ray tube irradiating a subject with X-rays and an X-ray detector separate from the X-ray tube. The X-ray imaging apparatus includes: an acceleration detection part which detects an X-ray irradiation direction of the X-ray tube and inclination of an X-ray incident surface of the X-ray detector on the basis of signals from an acceleration sensor and a magnet detection part which detects the X-ray irradiation direction of the X-ray tube and inclination of the X-ray incident surface of the X-ray detector on the basis of the signals from a magnet sensor. The X-ray imaging apparatus determines a facing state of the X-ray detector and the X-ray tube on the basis of a detection result of the acceleration detection part or the magnet detection part, and prohibits the use of a detection result of magnet detection means during a specific operation period of the X-ray imaging apparatus.COPYRIGHT: (C)2015,JPO&INPIT【課題】X線照射装置とX線検出器が別体として構成されたX線撮影装置において、X線管とX線検出器の位置合わせを容易にかつ正確に行なえるようにする。【解決手段】被検体にX線を照射するX線管と、X線管とは別体のX線検出器とを備えるX線撮影装置は、加速度センサからの信号に基づいてX線管のX線の照射方向とX線検出器のX線入射面の傾きを検出する加速度検出部と、磁気センサからの信号に基づいてX線管のX線の照射方向とX線検出器のX線入射面の傾きを検出する磁気検出部とを有する。X線撮影装置は、加速度検出部または磁気検出部の検出結果に基づいてX線検出器とX線管の対向状態を判定するが、X線撮影装置の特定の動作期間では、磁気検出手段の検出結果の使用を禁止する。【選択図】図3
