We present a new model for fanning and bending white matter structures on a sub-voxel scale. We devise a parametric model of how the fibre orientation varies spatially over each sub-voxel in the voxel grid for both types of configuration. Fitting the model provides quantitative information about the degree of fanning or bending in each voxel. We demonstrate using data from a standard human brain diffusion MRI acquisition.
Publication: International Society For Magnetic Resonance In Medicine (ISMRM) | full text (PDF)
Publication URL: http://www.cs.ucl.ac.uk/miccai/dmfc/orals/paper27.pdf