PROBLEM TO BE SOLVED: To provide an X-ray image diagnostic apparatus in which the complicated operation of the user can be avoided.SOLUTION: The X-ray image diagnostic apparatus includes an X-ray tube 60 which generates X-rays and an X-ray collimator 70 which irradiates a subject with X-rays in the designated irradiation area of generated X-rays. The X-ray collimator 70 provides an X-ray passage hole which passes X-rays in the corners of more than 2 of X-ray shielding materials for shielding X-rays, and includes a plurality of collimator vanes 80 arranged on a plane which at least crosses with irradiation of X-rays from X-ray tube 60, and collimator vane driving parts 90 which move the collimator vanes 80 along the direction of the plane concerned and are constituted so that they can rotate at a rotation pivot point of each collimator vane 80.COPYRIGHT: (C)2013,JPO&INPIT【課題】 ユーザの煩雑な操作を回避可能なX線画像診断装置を提供する。【解決手段】 X線を発生するX線管60と、発生されたX線のうちの所定の照射域のX線を被検体に照射するX線絞り70と、を具備したX線画像診断装置であって、X線絞り70は、X線を遮蔽するX線遮蔽材の2以上の隅にX線を通過させるX線通過孔を設け、X線管60の照射X線と少なくとも交わる平面に配置する複数の絞り羽根80と、絞り羽根80を当該平面の方向に沿って移動し、それぞれの絞り羽根80の回転中心で回転可能に構成される絞り羽根駆動部90とを備える。【選択図】 図3
