Patent ID: 9552659
Date: 2017-01-24
CPC Classifications: A61B,G06T

Claim:
1. An X-ray CT device comprising: an X-ray generation part that generates an X-ray, an X-ray detection part that has a plurality of X-ray detectors for detecting the X-ray, detects a transmitted X-ray, and outputs projection data, a rotation part that oppositely disposes the X-ray generation part and the X-ray detection part, and rotationally moves the X-ray generation part and the X-ray detection part, a projection data interpolation part that interpolates the projection data, a reconstruction part that performs a reconstruction operation using the interpolated projection data, and generates a reconstructed image, and a focal point moving part that moves a focal point of the X-ray alternately to a plurality of positions on a rotation orbit plane of the rotational movement, wherein: the X-ray detection part is constituted with the plurality of X-ray detectors arranged in the channel direction along the rotational direction, the projection data includes missing of data occurring in connection with movement of the focal point, the projection data interpolation part interpolates data at data missing positions of the projection data, with a view direction interpolation processing for interpolating the data using real data of the projection data lining up along the angular direction of the rotational movement and a channel direction interpolation processing for interpolating the data using real data of the projection data lining up along the channel direction, and the reconstruction part generates a reconstructed image in which contribution ratios of the projection data having been subjected to the view direction interpolation processing and the projection data having been subjected to the channel direction interpolation processing are different depending on position of pixel in the reconstructed image.