PROBLEM TO BE SOLVED: To provide an X-ray computed tomographic apparatus which, when photographing is interrupted by an abnormal discharge in the X-ray tube, can suppress the influence of the interruption.SOLUTION: An X-ray computed tomographic apparatus according to the present embodiment comprises: a bed for movably supporting a top board on which a subject is placed a trestle having an X-ray tube and an X-ray detection unit which rotate around the top board a high voltage generation unit for generating high voltage to be applied between the electrodes of the X-ray tube an electric current detection unit for detecting the current of the X-ray tube an abnormal discharge identification unit for identifying an occurrence of an abnormal discharge within the X-ray tube on the basis of output from an electric potential difference detection unit a mechanism movement unit for moving the top board to move the subject to within the trestle a mechanical control unit for controlling the mechanical movement unit so as to resume the movement of the top board immediately after the movement of the top board is stopped in association with identification of the occurrence of an abnormal discharge within the X-ray tube by the abnormal discharge identification unit.COPYRIGHT: (C)2015,JPO&INPIT【課題】X線管球内で異常放電が発生したことによって撮影が中断された場合において、撮影を中断した影響を抑えることのできるX線コンピュータ断層撮影装置を提供すること。【解決手段】本実施形態によるX線コンピュータ断層撮影装置は、被検体を載置する天板を移動可能に支持する寝台と、天板の周りを回転するX線管とX線検出部とを有する架台と、X線管の電極間に高電圧を印加するための高電圧を発生する高電圧発生部と、X線管の電流を検出する電流検出部と、電位差検出部から出力に基づいて、X線管内の異常放電の発生を特定する異常放電特定部と、被検体を架台内に移動させるために、天板を移動させる機構移動部と、異常放電特定部によるX線管内の異常放電の発生の特定に呼応して、天板の移動を停止させ、その直後に天板の移動を再開させるために機構移動部を制御する機構制御部と、を具備する。【選択図】 図1
