Hi Dusan,

Volumes are computed from soft segmentations, which ameliorates the problems with partial voluming with the surrounding CSF.

Kind regards,

/Eugenio

Juan Eugenio Iglesias

Senior research fellow

CMIC (UCL), MGH (HMS) and CSAIL (MIT)

http://www.jeiglesias.com

From: <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Dusan Hirjak <dusanhirjak@hotmail.com>
Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Date: Thursday, 16 May 2019 at 16:21
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>, "freesurfer-request@nmr.mgh.harvard.edu" <freesurfer-request@nmr.mgh.harvard.edu>
Subject: [Freesurfer] brainstem - partial volume effects

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Dear Freesurfer experts,

I have one question regarding the partial volume effects on brainstem volume when using Freesurfer 6.0 brainstem tool: Could partial volume effects in a comparatively small sample (n=92) have an influence on the results (group difference in SCP volumes)? How should I deal with this effect? Any suggestions are welcome.

best regards

Dusan