X-ray CT data processing apparatus and X-ray CT apparatus equipped with the same

摘要

Multi-energy imaging is performed with an energy separation type detector, and when creating an image by classifying a subject into multiple reference materials, the appropriateness of the assumed reference material is estimated and an appropriate reference material is accurately determined. An X-ray CT data processing apparatus that processes CT data acquired in each of a plurality of detection energy ranges and creates a reconstructed image classified into a predetermined reference material, wherein different combinations of the plurality of CT data are provided. For each of the plurality of reference substances, a physical quantity that does not depend on energy is calculated, and a reference substance data calculation unit that creates a plurality of reference substance data for the same reference substance, and the reference substance data calculation unit calculates An appropriate determination index creating unit that creates an index for determining the suitability of the reference material based on a plurality of reference material data.