Hi Wei
The DKT and aparc are estimates from folding patterns, based on different
neuroanatomist’s conventions. The exvivo ones are based on direct observation
of highres ex vivo images where we can see the borders and likely to be more
accurate in my opinion. The first one is all vertices that might possibly be in
EC, the second is thresholded so that the EC label has the same area as the
average of the ex vivo labels.
Cheers
Bruce
From: freesurfer-boun...@nmr.mgh.harvard.edu
<freesurfer-boun...@nmr.mgh.harvard.edu> On Behalf Of Wei Shao
Sent: Thursday, October 28, 2021 12:41 AM
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] same ROI with different stats
External Email - Use Caution
Hi, Freesurfer exports
I'm wondering what is the difference in the stat folder when it comes to the
same ROI.
For example, I have found the entorhinal from 4 different stats files and the
values are slightly different.
lh.aparc.DKTatlas.stats
entorhinal 665 393 1528 3.174 0.788 0.085 0.021 5
0.5
lh.aparc.pial.stats
entorhinal 848 799 1906 3.159 0.787 0.199 0.068 16
3.1
lh.BA_exvivo.stats
entorhinal_exvivo 570 346 1394 3.000 1.015 0.083 0.023
5 0.4
lh.BA_exvivo.thresh.stats
entorhinal_exvivo 344 205 918 3.450 0.520 0.057 0.010
1 0.1
I‘m really appreciate it if you can provide me some instructions about these 4
Best,
Wei
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