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Abstract #3579

Resolving crossing fibers with the inclusion of intra-axonal diffusion modeling

Chunyu Song1, Peng Sun2, Zezhong Ye3, and Sheng-Kwei (Victor) Song4

1Biomedical Engineering, Washington University in St. Louis, st louis, MO, United States, 2Radiology, Washington University School of Medicine, St. Louis, MO, United States, University City, MO, United States, 3Chemistry, Washington University in St. Louis, st louis, MO, United States, 4Radiology, Washington University School of Medicine, St. Louis, MO, United States, Saint Louis, MO, United States

A new diffusion histology imaging (DHI) model is proposed to model crossing fibers considering both intra- and extra-axonal water diffusion, along with extra-axonal isotropic diffusion within an image voxel. Both Monte-Carlo simulation and in vivo MRI data from one healthy volunteer brain were examined to assess whether DHI can resolve crossing fibers while quantifying axonal injury, demyelination, and inflammation.

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