Thank you for the answer but sorry, I don't know how use mri_ca_label function!
I have aparc+aseg.mgz volume segmentation and I would have a probabilistic segmentation of gray matter cortical in ctx.mgz file.
How can I do?
I am a beginner freesurfer user!
best
Giacomo
Hi Giacomo,
we don't write out the probabilities by default. To get them you would need to add -write_probs <prob volume name> to the mri_ca_label command line (you can find it in recon-all.log for each subject).
cheers
Bruce
On Wed, 14 Oct 2009, Giacomo Mandruzzato wrote:
---------- Forwarded message ----------
From: Giacomo Mandruzzato <giacomo.mandru@gmail.com>
Date: 2009/10/14
Subject: probabilistic segmentation of gray matter
To: freesurfer@nmr.mgh.harvard.edu
Hi,
I have a question about a probabilistic segmentation of gray matter with
freesurfer. How can I do it?
if I binarize like this:
mri_binarize --i aparc+aseg.mgz --min 999.5 --o ctx.mgz
I obtain only a mask 0-1. Can I obtain a probablistic map like I obtained
with SPM and FSL of the gray matter?
thank you in advance
Giacomo Mandruzzato
Student of Bioengineering
Universiti of Padova