PROBLEM TO BE SOLVED: To provide an X-ray diagnosis device that can prevent or reduce the occurrence of artifact due to the body thickness change of a subject and the like in order to obtain a tomographic image.SOLUTION: The X-ray diagnosis device as in one embodiment is provided with: an X-ray source irradiating the subject with X-rays an X-ray detector detecting X-rays transmitted through the subject and outputting projection data a rotation mechanism rotating the X-ray source and the X-ray detector around the subject while making the X-ray source and the X-ray detector face each other a control unit collecting the projection data while the X-ray source and the X-ray detector are being rotated around the subject by the rotation mechanism, so that the number of views in a specific range of view angles from the X-ray source and the X-ray detector is greater than that of other ranges of view angles and a reconstruction unit reconstructing an image using the projection data of each of the collected views.COPYRIGHT: (C)2013,JPO&INPIT【課題】被検体の断層像を得るにあたり、被検体の体厚変化等に起因したアーチファクトの発生を防止ないしは低減することができるX線診断装置を提供すること。【解決手段】一実施形態に係るX線診断装置は、被検体にX線を照射するX線源と、被検体を透過したX線を検出して投影データを出力するX線検出器と、前記X線源およびX線検出器を対向させた状態で被検体の周囲を回転させる回転機構と、前記回転機構により前記X線源および前記X線検出器を被検体の周囲で回転させつつ、前記X線源および前記X線検出器により特定のビュー角度範囲におけるビュー数が他のビュー角度範囲に比べて多くなるように投影データを収集する制御部と、収集された各ビューの投影データを用いて画像を再構成する再構成部と、を備えている。【選択図】 図5
