System and method for multi-material correction of image data

摘要

A method is provided. The method includes acquiring projection data of an object from a plurality of pixels, reconstructing the acquired projection data from the plurality of pixels into a reconstructed image, performing material characterization and decomposition of an image volume of the reconstructed image to reduce a number of materials analyzed in the image volume to two basis materials. The method also includes generating a re-mapped image volume for at least one basis material of the two basis materials, and performing forward projection on at least the re-mapped image volume for the at least one basis material to produce a material-based projection. The method further includes generating multi-material corrected projections based on the material-based projection and a total projection attenuated by the object, which represents both of the two basis materials, wherein the multi-material corrected projections include linearized projections.

主权项

1. A method comprising:
acquiring projection data of an object from a plurality of pixels; reconstructing the acquired projection data from the plurality of pixels into a reconstructed image; performing material characterization and decomposition of an image volume of the reconstructed image to reduce a number of materials analyzed in the image volume to two basis materials; generating a re-mapped image volume for at least one basis material of the two basis materials; performing forward projection on at least the re-mapped image volume for the at least one basis material to produce a material-based projection; and generating multi-material corrected projections based on the material-based projection and a total projection attenuated by the scanned object, which represents both of the two basis materials, wherein the multi-material corrected projections comprise linearized projections; wherein the two basis materials comprise iodine and water, and the at least one basis material comprises iodine.