PROBLEM TO BE SOLVED: To downsize a holding apparatus or an X-ray diagnostic apparatus which holds an X-ray generator and an X-ray detector, and to improve the cleanliness of the apparatuses.SOLUTION: According to one embodiment, a holding apparatus holds an X-ray generator configured to irradiate an object with X-ray and an X-ray detector configured to detect X-ray transmitted through the object. The holding apparatus comprises: an arcuate arm having a hollow portion inside configured to hold the X-ray generator and the X-ray detector which are opposite a guide groove provided along an outer surface of the arcuate arm a first roller configured to run in the hollow portion in abutment with an inner wall of the hollow portion which is located on the outer surface and a second roller configured to run in the guide groove while being fitted in the guide groove and hold the arm, together with the first roller, so as to allow the arm to slide along an arcuate direction of the arm.COPYRIGHT: (C)2013,JPO&INPIT【課題】X線発生装置及びX線検出装置を保持する保持装置乃至はX線診断装置をコンパクト化し、また、これら装置の清潔性の向上を図ること。【解決手段】一実施形態に係る保持装置は、被検体にX線を照射するX線発生装置および被検体を透過したX線を検出するX線検出装置を保持する保持装置であって、内部に中空部を有し、前記X線発生装置およびX線検出装置を正対させた状態で保持する円弧状のアームと、前記アームの外周面に沿って設けられたガイド溝と、前記中空部の前記外周面側の内壁に当接した状態で前記中空部内を走行する第1のローラと、前記ガイド溝に嵌め合って前記ガイド溝内を走行し、前記第1のローラとともに前記アームをその円弧方向に沿ってスライド可能に狭持する第2のローラと、を備えている。【選択図】 図5
