Abstract #2840
Surface tracking from the cortical mesh complements diffusion MRI fiber tracking near the cortex
Etienne St-Onge 1 , Gabriel Girard 1 , Kevin Whittingstall 2 , and Maxime Descoteaux 1
1
Sherbrooke Connectivity Imaging Lab,
Universit de Sherbrooke, Sherbrooke, Qubec, Canada,
2
Department
of Diagnostic Radiology, Faculty of Medicine and Health
Science, Universit de Sherbrooke, Sherbrooke, Qubec,
Canada
Conventional diffusion MRI fiber tracking methods have
difficulty reconstructing white matter fiber structures
near gray matter and have trouble penetrating into gyri
and fully exploring the gyrus. Hence, the main
limitation of current tractography techniques is the
partial volume effect due to the tracking mask
discretization in gyri and poor spatial resolution of
the data. Our proposed surface tracking method
successfully reconstructs fiber structures near the
brain surface by only using a basic T1 anatomical image
and shape information. With this method, we can see
fanning in gyri, without the need of high resolution
dMRI techniques.
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