SCATTERED RADIATION CORRECTION METHOD AND SCATTERED RADIATION CORRECTION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a scattered radiation correction method and a scattered radiation correction apparatus that can carry out scattered radiation correction at high speed compared with the prior art in CT-like imaging.;SOLUTION: Scattered radiation is estimated using a reduced image generated from a projection image, and the scattered radiation distribution on the projection image is acquired by enlargement processing. The scattered radiation correction on the projection image is carried out by subtracting the obtained scattered radiation distribution from the projection image. When a primary X-ray image and a scattered radiation distribution in each projection direction are to be obtained by sequential approximation calculation, a scattered radiation image which has already been identified in an adjacent projection direction is used as a first estimated value (an initially set value) in next sequential calculation.;COPYRIGHT: (C)2010,JPO&INPIT