PROBLEM TO BE SOLVED: To reduce position deviation artifacts due to the body movement of a subject that are generated when performing subtraction processing between images before and after contrast medium injection.SOLUTION: The position of a marker attached to the subject is measured by a position measuring apparatus and movement by the body movement is detected using the obtained position information. Then, on the basis of the result, a C-shaped arm 60 is rotationally driven around two axes by a rotational drive part 22, and the imaging direction of the X-ray imaging mechanism 10 is made to follow the body movement of the subject.COPYRIGHT: (C)2011,JPO&INPIT【課題】造影剤注入前後の画像間でサブトラクション処理を行う際に生じる、被検体の体動に起因する位置ずれアーチファクトを軽減する。【解決手段】被検体に取り付けたマーカの位置を位置計測装置により測定し、得られた位置情報を用いて体動による移動を検出する。そして、その結果に基づいて回転駆動部22によりC形アーム60を2軸周りに回転駆動させ、X線撮影機構10の撮影方向を被検体の体動に追従させる。【選択図】 図1
