Assessing the validity of the approximation of DW-MRI signals from crossing fascicles by sums of signals from single fascicles

摘要

PurposeTo assess the validity of the superposition approximation for crossing fascicles, i.e. the assumption that the total diffusion-weighted MRI (DW-MRI) signal is the sum of the signals arising from each fascicle independently, even when the fascicles intermingle in a voxel.