PROBLEM TO BE SOLVED: To provide an X-ray machine which can improve image quality in the entire imaging region.SOLUTION: A cross section obtained by cutting an X-ray beam at the time of acquisition of projection data from the X-ray beam detected by an X-ray sensor with a plane perpendicular to the central axis of the X-ray beam and passing through a central axis O of an imaging region PA is defined as an imaging specific surface SF. The number of imaging specific surfaces SF existing per unit area in the plane defined by viewing the imaging region PA from the direction along the central axis O of the imaging region PA is defined as the overlapping density of the projection data. A control unit 8 of the X-ray machine performs uniformization control to uniformize the overlapping density of the projection data in an outer side part OP and a center side part IP of the imaging region PA.【課題】撮影領域全体において画質の向上を図ることができるＸ線撮影装置を提供する。【解決手段】Ｘ線センサにより検出されるＸ線束からの投影データの取得時における前記Ｘ線束を、該Ｘ線束の中心軸に垂直でかつ撮影領域ＰＡの中心軸Ｏを通る平面で切断した場合に得られる断面を撮影特定面ＳＦとする。また、撮影領域ＰＡを該撮影領域ＰＡの中心軸Ｏに沿う方向から見た平面における単位面積当たりに存在する撮影特定面ＳＦの枚数を、投影データの重なり密度とする。Ｘ線撮影装置の制御部８は、撮影領域ＰＡの外側部分ＯＰと中心側部分ＩＰとで投影データの重なり密度を均一化する均一化制御を行う。【選択図】図１４
