METHOD AND SYSTEM FOR REDUCING LOCALIZED ARTIFACTS IN IMAGING DATA

摘要

A method and system for reducing localized artifacts in imaging data, such as motion artifacts and bone streak artifacts, are provided. The method includes segmenting the imaging data to identify one or more suspect regions in the imaging data near which localized artifacts are expected to occur, defining an artifact-containing region of interest in the imaging data around each suspect region, and applying a local bias field within the artifact-containing regions to correct for the localized artifacts.

主权项

1. A method for reducing localized artifacts in imaging data, the method comprising:
segmenting the imaging data to identify one or more suspect regions in the imaging data near which localized artifacts are expected to occur; defining an artifact-containing region of interest in the imaging data around each suspect region; defining one or more classes for the imaging data of the artifact-containing regions of interest, and associating each class with at least one representative imaging value; assigning each item of imaging data within the artifact-containing regions to one of the classes; determining local bias field within the artifact-containing regions describing, for each item of imaging data within the artifact-containing regions, a difference between a calculated imaging value and the representative imaging value based on the classification; and applying the local bias field to the imaging data within the artifact-containing regions to produce art artifact-corrected imaging data.