PROBLEM TO BE SOLVED: To provide an apparatus which enables an installation operation of the X-ray tube to a scanner gantry section to be performed without workers effort.SOLUTION: The X-ray CT apparatus is provided with a scanner gantry section 100 which mounts an X-ray tube 101 for irradiating a subject with X-rays and rotates around the subject, wherein the scanner gantry section 100 includes: a fixed positioning member 203 which positions one side in two sides of the X-ray source 101 orthogonal to the tangent direction of the circle which the rotational orbit of the scanner gantry section 100 draws, when the X-ray source 101 is installed to the scanner gantry section 100 and a movable positioning member 204 which positions the other side in two sides of the X-ray source and includes adjusting members 205, 206, 207, and 208 for adjusting a movable range.COPYRIGHT: (C)2013,JPO&INPIT【課題】 スキャナガントリ部へのX線管の取付け作業が作業者の労力を要さずに行う。【解決手段】 被検体にX線を照射するX線管101を搭載し前記被検体の周囲を回転するスキャナガントリ部100を備えたX線CT装置であって、前記スキャナガントリ部100は、前記X線源101を前記スキャナガントリ部100に取り付けるに際して、前記スキャナガントリ部100の回転軌道が描く円の接線方向と直交するX線源101の二辺の一辺を位置決めする固定位置決め部材203と、前記X線源の二辺の他辺を位置決めすると共に、可動範囲を調整する調整部材205、206、207、208を具備する可動位置決め部材204と、を備える。【選択図】 図3
