PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus in which an operation amount at the time of crosstalk correction is reduced and operation throughput is raised.SOLUTION: The X-ray CT apparatus includes: an X-rays generating part which generates X-rays an X-ray detection section which has two or more X-ray detectors for detecting X-rays which has permeated a subject from the X-rays generating part and an image generation section which rectifies a signal acquired in the X-ray detection section, and reconstructs an image, wherein when crosstalk correction in the two or more X-ray detectors is carried out in the image generation section, only correction of a component which decreases locally is carried out previously, and correction of the whole crosstalk component is carried out simultaneously with image reconstruction.COPYRIGHT: (C)2012,JPO&INPIT【課題】X線CT装置のクロストーク補正時の演算量の低減と、演算スループットを向上させる。【解決手段】X線を発生するX線発生部と、前記X線発生部から被写体を透過したX線を検出するための複数のX線検出器を有するX線検出部と、前記X線検出部で得られた信号を補正し画像を再構成する画像生成部を備えたX線CT装置において、前記複数のX線検出器におけるクロストーク補正を前記画像生成部において実施する際に、局所的に減衰する成分の補正のみを先に実施し、クロストークの全体成分の補正については画像再構成と同時に実施する。【選択図】図4
