Hi Freesurfer group,
I wanted to use mris_preproc to calculate regional differences in surface
area between two groups.
Ideally I would like to use something that is vertex-wise and preserves
regional area, but I've had trouble with spherical demons (using the
Winkler methodology). So I am going
When I looked at orig.mgz it is actually too bright. It's very hard to
differentiate white and gray matter from how bright the image is. Maybe
that is the root of the problem. I tried correcting it with mri_convert
like this:
cp orig.mgz holder_orig.mgz
mri_convert --scale 3 holder_orig.mgz orig.m
The 001.mgz actually looks good in this case (in terms of intensity) so
I'm not sure if it makes sense to scale it up further. The problem is with
the nu.mgz being too dark. I'll try it out though if you think it will
also work in this case.
- Abid
---
you could try using --scale t
Hi Dr. Fischl,
I had a couple subjects that failed recon-all. Although the error log said
recon-all failed at mri_watershed it looks like the root problem is a
couple steps earlier, because the nu.mgz looks too dark. This was
discussed in a previous thread from 2008.
http://www.mail-archive.com/f
