fODF
In diffusion MRI, the fiber orientation distribution function (fODF) is a function on the unit sphere that describes the distribution of fiber orientations within a voxel. It represents the probability density of fibers pointing in a given direction and is typically interpreted as fiber density along directions.
The fODF is estimated from high angular resolution diffusion imaging data using deconvolution or reconstruction techniques
fODF-based analysis enables tractography to reconstruct multiple fiber compartments in a voxel, improving detection of crossing,
Normalizations: the fODF is often constrained to integrate to one over the sphere, and its values can
Limitations include sensitivity to noise, the need for high-quality diffusion data, and dependence on the assumed