Tractography of the subcortical U-fibers using a position-dependent maximum angle
(2023) 31th Annual Meeting of the International Society for Magnetic Resonance in Medicine (ISMRM) — Location: Toronto, Canada (3.June.2023)
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- Abstract
- Short association fibers in the subcortical white matter, also known as U-fibers, represent the connections between neighboring gyri. Due to the geometry of the cortical folds and the sharp turns along the cortical surface, tractography of U-fibers remains a challenge since increasing the maximum angle between tractography steps also increases the occurence of false positive streamlines. We propose to replace the fixed maximum angle value in tractography algorithms by an angular map, allowing higher angles at the interface between grey and white matter. This enables a more accurate tracking of U-fibers, while keeping a low number of false positive streamlines.
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Citations
Delinte, N., Dessain, Q., Dausort, M., Vanden Bulcke, C., & Macq, B. (2023). Tractography of the subcortical U-fibers using a position-dependent maximum angle. Proc. Intl. Soc. Mag. Reson. Med., 31. https://hdl.handle.net/2078.5/235092 (Original work published 2023)