Hi Marco,
What command did you run and what FastSurfer version? If you run the full pipeline you should have the eTIV measure in the stats files.
If you run --seg_only then you will not get etiv by default, as that requires the talairach registration. So in that case just switch on the talairach registration via --tal_reg You may also want other use the --3T flag for 3T images so that the correct atlas is used (same as in FreeSurfer).
Best, Martin
On 16. Jul 2025, at 15:22, Marco Ganzetti marco.ganzetti@biogen.com wrote:
Dear, I would like to know how to extract the total intracranial volume after running Fastsurfer. The aseg.stats file only report the following regions:
# Measure Mask, MaskVol, Mask Volume, 1378561.000000, mm^3 # Measure BrainSeg, BrainSegVol, Brain Segmentation Volume, 1112716.172377, mm^3 # Measure BrainSegNotVent, BrainSegVolNotVent, Brain Segmentation Volume Without Ventricles, 1095647.392151, mm^3 # Measure SupraTentorial, SupraTentorialVol, Supratentorial volume, 966887.205081, mm^3 # Measure SupraTentorialNotVent, SupraTentorialVolNotVent, Supratentorial volume, 949818.424855, mm^3 # Measure SubCortGray, SubCortGrayVol, Subcortical gray matter volume, 58370.262413, mm^3 # Measure rhCerebralWhiteMatter, rhCerebralWhiteMatterVol, Right hemisphere cerebral white matter volume, 235981.558256, mm^3 # Measure lhCerebralWhiteMatter, lhCerebralWhiteMatterVol, Left hemisphere cerebral white matter volume, 231717.193880, mm^3 # Measure CerebralWhiteMatter, CerebralWhiteMatterVol, Total cerebral white matter volume, 467698.752136, mm^3
I don’t see any eTIV.
Regards Marco _______________________________________________ Freesurfer mailing list -- freesurfer@nmr.mgh.harvard.edumailto:freesurfer@nmr.mgh.harvard.edu To unsubscribe send an email to freesurfer-leave@nmr.mgh.harvard.edumailto:freesurfer-leave@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman3/lists/freesurfer@nmr.mgh.harvard.e...