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Biomedical sciences publications January 1, 2011

Sheet-Like White Matter Fiber Tracts: Representation, Clustering, and Quantitative Analysis

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Maddah, M., Miller, J. V., Sullivan, E. V., Pfefferbaum, A., & Rohlfing, T. (2011, September). Sheet-like white matter fiber tracts: representation, clustering, and quantitative analysis. In International Conference on Medical Image Computing and Computer-Assisted Intervention (pp. 191-199). Springer, Berlin, Heidelberg.

Abstract

We introduce an automated and probabilistic method for subject-specific segmentation of sheet-like fiber tracts. In addition to clustering of trajectories into anatomically meaningful bundles, the method provides statistics of diffusion measures by establishing point correspondences on the estimated medial representation of each bundle. We also introduce a new approach for medial surface generation of sheet-like fiber bundles in order too initialize the proposed clustering algorithm. Applying the new method to a population study of brain aging on 24 subjects demonstrates the capabilities and strengths of the algorithm in identifying and visualizing spatial patterns of group differences.

Keywords: Corpus Callosum, Medial Surface, Orientation Information, Medial Representation, Diffusion Measure

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