| 摘要 |
PROBLEM TO BE SOLVED: To suppress cone beam artifacts to the level of full reconstruction while maintaining the time resolution in half reconstruction.SOLUTION: A X-ray computed tomography apparatus includes: a gantry 100; reconstruction processing units 117, 118 which apply a first data redundancy corrective weight to a first projection data set corresponding to a first angle range and generate first volume data on the basis of the applied first projection data set, while they apply a second data redundancy corrective weight to a second projection data set corresponding to a second angle range wider than the first angle range, and generate second volume data on the basis of the applied second projection data set; and a correction unit 120 which corrects a first volume data on the basis of a difference between the first volume data and a second volume data for reducing a cone beam artifact. |
