Linear Persistent Angular Structure MRI and non-linear Spherical Deconvolution for Diffusion MRI
Alexander D, Seunarine K
University College London
This abstract shows that Persistent Angular Structure (PAS) MRI is a special case of Spherical Deconvolution (SD). This observation allows us to a) construct a linear implementation of PAS-MRI and b) exploit the optimal non-linear representation of PAS-MRI for SD. We show experiments comparing both the linear and non-linear implementations of PAS-MRI and SD using several synthetic datasets that simulate crossing fibre populations. Furthermore, we optimize the linear implementations of these methods to minimize the bias of the reconstructed fibre directions.