Hi Mudathir,
The two templates were created by using the same 40 subjects as a training data
set as is used by Freesurfer. The volumes were registered to a common space by
an iterative framework in which you create a mean, register individuals to it
and then re-create the mean. We then reconned the final mean. The MNI
equivalent was created by moving the mean to the MNI152 space before running
recon.
The above explains why those 40 subjects were used for the template.
Best, Lilla
________________________________
From: freesurfer-boun...@nmr.mgh.harvard.edu
<freesurfer-boun...@nmr.mgh.harvard.edu> on behalf of バキット・ムダシル
<m-bak...@fmu.ac.jp>
Sent: Wednesday, April 14, 2021 6:55 AM
To: Freesurfer support list <Freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] The cvs_avg35
External Email - Use Caution
Hi,
I was looking for any document describes how the cvs_avg35 and
cvs_avg35_inMNI152 were made? Can you please send me a link or give me a brief
about it please? I searched in the freesurfer wiki and here in the freesurfer
folder but no success.
Also, I found from literature that the fsaverage was made from a data of 40
subjects that includes 10 cases of Alzheimer disease. Can I ask what was the
reason to include those 10 cases to create this template?
Thanks
Mudathir
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