Hardness increase correcting method for reconstructing image of e.g. abdomen, involves correcting reconstruction data set by additive or multiplicative application of determined correction values to respective reconstruction data

摘要

The method involves segmenting reconstruction data set of an object according to attenuation classes to determine segmenting information. Material path length and/or material population density for each class is determined. An effective material path length and/or material population density for each image element is determined by averaging all radiation paths. A correction value for each element is determined by considering an energy distribution-specific correction table. The set is corrected by additive or multiplicative application of the values to respective reconstruction data.