Patent Document ID: 9662081
Application ID: 14891303
Patent Flag: 1

Claim One:
1. An X-ray CT image processing method for visualizing the inside of a scanned object in a form of a spatial distribution of X-ray absorption coefficients based on projection X-ray data obtained by detection of at least one projected X-ray at one or more X-ray detectors under several X-ray projections on an observation object, comprising: setting a probability distribution of a projection X-ray at an observation process in a case of said observation process wherein projection X-rays detected by an X-ray detector include a sum of multiple projection X-rays incident on spatially different positions, the multiple projection X-rays being incident at temporally different timings and including multiple projection X-rays of different wavelengths; setting a prior probability distribution regarding an X-ray absorption coefficient of a material inside the observation object, using a parameter concerning the material; computing a joint posterior distribution of X-ray absorption coefficient and said material's parameter, the joint posterior distribution computed from said projection X-ray data, said prior probability distribution, and said observation process; and estimating an X-ray absorption coefficient based on the said joint posterior distribution.