Hi Colleen
can you upload a sample subject? Otherwise there is really no way for us to judge.
cheers Bruce
On Thu, 1 Mar 2018, C.P.E. Rollins wrote:
Hi Freesurfer developers,
I've processed my sample of T1 scans through recon-all and have corrected the pial and WM surfaces. The surfaces look mostly good, though when I checked the aseg segmentations they are pretty poor and there is huge variability in the volumes I get from asegstats2table (for instance, Left-Lateral-Ventricle is anywhere from 3773.1 to 22575.9). I was wondering if there's any way to improve the subcortical segmentations? Moreover, if the subcortical segmentations are poor, should I worry that there might also be errors in my cortical thickness or local gyrification index calculations (though the values for these show much less variability).
Many thanks, Colleen