oh, that is not due to an error in the aseg itself. That's due to the
surface being cut off, probably due to a topological defect. See
https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/TopologicalDefect_freeview
On 10/4/2023 5:07 AM, Krystal Xiwing Yau wrote:
External Email - Use Caution
Dear Douglas,
Thank you very much for your reply.
I edited aseg.presurf.mgz and reran below command:
recon-all -autorecon2-noaseg -autorecon3 -subjid <Subj_ID>
However, the aseg.stats did not show the expacted changes. Hence, I
checked the aseg.mgz of that subject, the filled area of the brain in
aseg.presurf.mgz did not show in aseg.mgz. Did I misunderstand the
whole process? Should I edit aseg.mgz directly to generate the statistics?
Thank you again for your attention.
Best regards,
Krystal
------------------------------------------------------------------------
*From:* freesurfer-boun...@nmr.mgh.harvard.edu
<freesurfer-boun...@nmr.mgh.harvard.edu> on behalf of Douglas N. Greve
<dgr...@mgh.harvard.edu>
*Sent:* 24 September 2023 05:22:56
*To:* freesurfer@nmr.mgh.harvard.edu
*Subject:* Re: [Freesurfer] [FreeSurfer] regeneration of aseg.stats
from manually edited aseg.mgz
External Email - Use Caution
Ideally, you should have edited the aseg.presurf.mgz, then rerun
recon-all starting just after the aseg. That said, if you edited the
aseg.mgz and then re-ran that mri_segstats command, the stats should
have changed.
On 9/15/2023 4:05 AM, Krystal Xiwing Yau wrote:
External Email - Use Caution
Dear FreeSurfer experts,
I would like to further follow up with this issue - I tried to run
the following command as instructed on *MailScanner has detected a
possible fraud attempt from "secure-web.cisco.com" claiming to be*
https://surfer.nmr.mgh.harvard.edu/fswiki/TkMeditGuide/TkMeditWorkingWithData/TkMeditSegmentations
<https://secure-web.cisco.com/1evNHkNaSNuSXdC2wFFw-2ABMa_g4EmNLnf6JTUpVKnrAXTPwEkpWybFSCDGn5a_sJXl8Je5G-RcLh3sKmvlWQvmb__KihFN1QpWKfrfY-fMngyZdcGtHxVd4KnCj3UFv9e3q26WBu93h7PSqmoCKtsG0vfpttod9gzaX7o8mzb7jetnawA8MGvoCyN4IvlGjmYmXfBr64jjJq5mhOwJcKVGgTJGgpwGWBT3AGaQ07-Z80pcPaSGS3sPYMzpi73uoOa8sRBUG28bP-K-EitYL0mBP7hakxWsgpQypAsogUHuj7SZbhfk8LzD2NYQKxDcWVyGiYJ8YsF8AS55wnAJwUA/https%3A%2F%2Fsurfer.nmr.mgh.harvard.edu%2Ffswiki%2FTkMeditGuide%2FTkMeditWorkingWithData%2FTkMeditSegmentations>:
recon-all -autorecon2-noaseg -subjid <Subj_ID>
However, I still got no increased numbers in the volumes that I
edited on aseg.presurf.mgz via Freeview. However, I observed an
increase under "Surface Hole" item. Should I care about it?
I'm using FreeSurfer 7.3.2 on Linux (OS Name: Ubuntu 23.04).
Thanks a lot!
Yours faithfully,
Krystal
------------------------------------------------------------------------
*From:* freesurfer-boun...@nmr.mgh.harvard.edu
<freesurfer-boun...@nmr.mgh.harvard.edu> on behalf of Krystal Xiwing
Yau <kryst...@hku.hk>
*Sent:* 14 September 2023 17:14:12
*To:* freesurfer@nmr.mgh.harvard.edu
*Subject:* [Freesurfer] [FreeSurfer] regeneration of aseg.stats from
manually edited aseg.mgz
External Email - Use Caution
Dear FreeSurfer experts,
I edited some images that under-segmented the brain by coloring the
missing brain regions. When I used the edited aseg.mgz to regenerate
aseg.stats, the new statistics did not show the increase of the
volumes that I edited. Please see the following command lines that I
have run on Linux:
mri_segstats --seed 1234 --seg mri/aseg.mgz --sum stats/aseg.stats
--pv mri/norm.mgz --empty --brainmask mri/brainmask.mgz
--brain-vol-from-seg --excludeid 0 --excl-ctxgmwm --supratent
--subcortgray --in mri/norm.mgz --in-intensity-name norm
--in-intensity-units MR --etiv --surf-wm-vol --surf-ctx-vol
--totalgray --euler --ctab $FREESURFER_HOME/ASegStatsLUT.txt
--subject Sub-180
May I know what step(s) I have missed before generating the
aseg.stats? Please kindly advise. Thank you very much!
Regards,
Krystal
Tel.: +852 2255 5024
Fax: +852 2872 5828
Address: Room 304, 3/F, New Clinical Building, 102 Pokfulam Road,
Hong Kong.
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