Hi Dongyue
A couple of things. I’m not sure which column you mean in the aparc.stats, but
the default values are usually for the white surface not the pial. But more
importantly, what are you trying to achieve by computing the mean area? That
will be a function of the tessellation I think, not of the surface. Don’t you
want the mean across subjects, not across vertices within a subject?
Cheers
Bruce
From: freesurfer-boun...@nmr.mgh.harvard.edu
<freesurfer-boun...@nmr.mgh.harvard.edu> On Behalf Of Dongyue Zhou
Sent: Saturday, March 26, 2022 1:02 AM
To: freesurfer@nmr.mgh.harvard.edu
Subject: [Freesurfer] Question about calculation of pial area in DKatlas
External Email - Use Caution
Dear FreeSurfer experts:
I want to calculate mean pial surface area in DKatlas in individual
space.And I know the function read_annotation.m in $FREESURFER_HOME/matlab for
loading this atlas.
And if I can load sub/surf/?h.area.pial as the area in each vertice and
calculate mean pial area by dividing sum PSA of all vertices in one ROI by the
number of vertices in this ROI?
But why my result is not the same as result in sub/stats/?h.aparc.stats ? Does
the column named surface area represent mean PSA in each ROI?
Bests,
Dongyue
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Mass General Brigham
Compliance HelpLine at https://www.massgeneralbrigham.org/complianceline
<https://www.massgeneralbrigham.org/complianceline> .
Please note that this e-mail is not secure (encrypted). If you do not wish to
continue communication over unencrypted e-mail, please notify the sender of
this message immediately. Continuing to send or respond to e-mail after
receiving this message means you understand and accept this risk and wish to
continue to communicate over unencrypted e-mail.
