Artifact reduction in mutual-information-based CT-MR image registration

  title={Artifact reduction in mutual-information-based CT-MR image registration},
  author={Mingxiu Wei and Jundong Liu and Junhong Liu},
  booktitle={Medical Imaging: Image Processing},
Mutual information (MI) is currently the most popular match metric in handling the registration problem for multi modality images. However, interpolation artifacts impose deteriorating effects to the accuracy and robustness of MI-based methods. This paper analyzes the generation mechanism of the artifacts inherent in linear partial volume interpolation (PVI) and shows that the mutual information resulted from PVI is a convex function within each voxel grid. We conclude that the generation of… CONTINUE READING


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