Dana,
I believe you can achieve this by running recon-all on the subjects with
the -norandomness flag. Unless you are using a version of FreeSurfer that
is older than v3.0.4 - let me know if you are.
--
On Mon, 15 Jun 2009, Dana W. Moore wrote:
Hi all,
I have run the same image twice with recon-all and gotten different results
for the cortical parcellation, with regions of the cortex differing an
average of 2% in volume and the biggest difference being 11% (left bankssts).
This is on a healthy, elderly brain. I'd like to try running images removing
the random factor that apparently causes these differences. I found
instructions on the internet to create an expert-options file to remove this
random factor. I was wondering where this file should be saved. My problem
is I am actually working remotely with parallel processing nodes, and I don't
have permission to write to the freesurfer home directory. I was wondering,
if I could use the whole path when I enter this command into recon-all, and
then save it anywhere I like.
Thanks,
Dana
Dana W. Moore, Ph.D.
Neuropsychology Fellow
Cornell Neuropsychology Service
Weill Medical College of Cornell University
New York Presbyterian Hospital
Department of Neurology & Neuroscience
428 East 72nd Street, Suite 500
New York, NY 10021
Phone: 212-746-2441
Fax: 212-746-5584
Email: dwm2...@med.cornell.edu
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