dti_ROI_stats.m I have made several changes to speed up the processing time, specially
when rotating the matrices. Study matrices, 4D, can have up to 3
millions voxels. Conventional rotation techniques seem quite
inneficient for this purpose. Instead, I decided to simplify the
problem by selecting only the slice of interest, in any orientation
and rorating a much smaller 3D matrix which is much faster.

more functionality has been added to the other gui's, description to
come.
:)