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Abstract #3167

Statistical DSI brain tractography: a way to handle the kiss-cross uncertainty

Hagmann P, Gigandet X, Wedeen V, Meuli R, Thiran J
University Hospital, Ecole Polytechnique Fdrale

Despite the advent of diffusion magnetic resonance imaging and tractography algorithms, the accurate mapping of complex fiber kiss-crossings areas of the brain remains out of reach. In this study, we present a statistical DSI-based tractography algorithm which explores all possible paths in the brain white matter. We also introduce a cortex connectivity graph whose weighted edges correspond to the connection likelihood. The tests performed on the centrum semi-ovale have shown that a simple thresholding applied to the edges of this graph allows us to image the connectivity of any part of the brain to the desired level of complexity.