PROBLEM TO BE SOLVED: To provide an X-ray diagnostic apparatus capable of changing an X-ray irradiation condition in accordance with a body thickness of a subject that changes in accordance with a rotation angle of an X-ray irradiation axis, and an X-ray diagnostic method.SOLUTION: An X-ray diagnostic apparatus 10 according to an embodiment of the present invention includes: an irradiation condition setting section for, on the basis of information about an X-ray transmission length of a subject P corresponding to a rotation angle of an X-ray irradiation axis, setting an X-ray irradiation condition corresponding to the rotation angle an imaging execution section for, under the X-ray irradiation condition corresponding to the rotation angle, performing X-ray imaging before and after injection of a contrast medium and an image generation section for generating a rotational DSA image on the basis of projection data obtained by the X-ray photographing before and after the injection of the contrast medium.COPYRIGHT: (C)2015,JPO&INPIT【課題】X線照射軸の回転角度に応じて変化する被検体の体厚に応じてX線照射条件を変更することができるX線診断装置およびX線診断方法を提供する。【解決手段】本発明の一実施形態に係るX線診断装置10は、X線照射軸の回転角度に応じた被検体PのX線透過長の情報にもとづいて、前記回転角度に応じたX線照射条件を設定する照射条件設定部と、前記回転角度に応じたX線照射条件で造影剤の注入前および注入後にX線撮影を行う撮像実行部と、前記造影剤の注入前および注入後のX線撮影により得られた投影データにもとづいて回転DSA画像を生成する画像生成部と、を備える。【選択図】 図1
