RADIUS-IN-IMAGE DEPENDENT DETECTOR ROW FILTERING FOR WINDMILL ARTIFACT REDUCTION, X-RAY CT APPARATUS AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To achieve restraint of artifacts, and improvement in image quality with prevention of deterioration of z-axis resolution.;SOLUTION: Projection data is obtained from at least two detector rows 103 in a CT system, the projection data are filtered by weighting addition using a weight changing dependent on a channel concerning the row direction of the detector row taking projection data in the same view among the projection data as an object, and reconstruction including back projection is performed for the filtered data.;COPYRIGHT: (C)2014,JPO&INPIT