PROBLEM TO BE SOLVED: To facilitate instruction to a subject for holding breath in an X-ray computed tomography apparatus.SOLUTION: The X-ray computed tomography apparatus including an X-ray tube 101 for generating an X-ray, an X-ray detector 103 for detecting an X-ray transmitted through the subject, and a support mechanism 102 for freely rotatably supporting the X-ray tube and the X-ray detector, is provided with a cradle 100 placed in an inspection room an image reconstruction unit 114 for reconstructing an image data based on the output from the X-ray detector and an illumination control section 215 for generating an illumination control signal to change an illumination mode of the inspection room in response to the start and end of generating an X-ray from the X-ray tube.COPYRIGHT: (C)2013,JPO&INPIT【課題】X線コンピュータ断層撮影装置において息止めに関する案内の伝達性を向上すること。【解決手段】X線コンピュータ断層撮影装置は、X線を発生するX線管101と、被検体を透過したX線を検出するX線検出器103と、X線管とX線検出器とを回転自在に支持する支持機構102とを有し、検査室に設置される架台100と、X線検出器の出力に基づいて画像データを再構成する画像再構成部114と、X線管からのX線の発生と停止とに応じて検査室の照明態様を変化させるための照明制御信号を発生する照明制御部215とを具備する。【選択図】 図1
