There could be a number of things going on here. The first one that come to
mind is that your fiber orientations could be messed up. Can you send me
screenshots of the lines view in FSLView of the corpus callosum in coronal
and axial views and the corona radiata in sagittal view (probably will have
to send them off list because of filesize)?
From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf
Of Massieh Moayedi
Sent: Wednesday, August 05, 2009 9:53 AM
To: [log in to unmask]
Subject: [FSL] Tracking from single-voxel seed with PROBTRACKX
I've been trying to use PROBTRACKX to track fibres from a single-voxel seed
in the pregenual ACC. The voxel is gray matter in a region of high crossing
fibres. Each time I run probtrackx it generates almost no fibres,
essentially stopping in that voxel. I've tried tracking from the closest
white matter region but I get the same results.
My bedpostx folder has all of the dyads and f1 and f2 files, so I believe it
should be able to track from this voxel despite the crossing fibres.
Do you have any suggestions?
Is there a way to specify a region around a voxel as the seed? (i.e. a 5x5x5
ROI centered at my voxel of interest)