External Email - Use Caution Hi Doug,
That is helpful, thank you. Best, Corinna On Tue, Jun 30, 2020 at 10:11 AM Douglas N. Greve <dgr...@mgh.harvard.edu> wrote: > Hi Corinna, this is probably due to partial volume correction. The > thalamic seg does not just count up voxels. The underlying model is a > tetrehdra mesh, and that is used to compute partial volume. > doug > > > > On 6/29/2020 6:06 PM, Corinna Bauer wrote: > > External Email - Use Caution > Hello all, > > We are working on calculating the volume of thalamic nuclei in our > participants and noticed that there is often a discrepancy in measured > volume in the ThalamicNuclei.v12.T1.volumes.txt and the volume calculated > for the same thalamic nucleus using fslstats -V. (Note that the nuclei are > all created in FreeSurfer, just extracted to individual .nii files > afterwards). > > For example: in one control subject, the volume of the right VPL was > measured in FreeSurfer as 264.650938 mm^3, but the same extracted label in > fslstats shows a volume of 242 mm^3. What could be causing this discrepancy? > > Thanks > > Corinna > > _______________________________________________ > Freesurfer mailing > listfreesur...@nmr.mgh.harvard.eduhttps://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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