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Abstract #3383

Mapping of Time-Dependent Myelin Changes in Multiple Sclerosis Lesions through Quantitative Separation of Magnetic Susceptibility Sources

Alexey Dimov1, Thanh Nguyen1, Shun Zhang2, Yi Wang1, and Susan Gauthier3
1Radiology, Weill Cornell Medicine, New York, NY, United States, 2Tongji Hospital, Wuhan, China, 3Neurology, Weill Cornell Medicine, New York, NY, United States

Synopsis

Keywords: Multiple Sclerosis, Susceptibility, Quantitative Susceptibility Mapping, susceptibility source separationDe- and remyelination are important treatment targets for multiple sclerosis therapies. In this study, we utilize susceptibility source separation to study differences in longitudinal trajectories of two important lesion types, paramagnetic rim lesions (rim+) and non-rim (rim-) lesions. We report significant difference in myelin content: while rim- lesions tend to demonstrate slow remyelination, rim+ tend to remain stable or demyelinate over time.

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Keywords