Hi, I am trying to eTIV correct the volumetric stats output from recon-all (ie aseg stats and aparc stats). I read the "eTIV-estimated Total Instranial Volume, aka ICV" wiki information, but I still have some questions.
1. Do all structures need to be eTIV corrected? 2. To use mri_label_volume, it looks like I will need a scale factor. Where do I find this scale factor? I assume it is different for each brain. 3. The output of mri_label_volume seems to be a percentage of the eTIV volume, so, in theory should the total percentages of all structures add up to one? Do most people analyze these percentage outputs or is this a step towards the actual data that is then analyzed? Thanks! Colleen _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
