Dear Freesurfer experts, I posted one week ago a question about the SupraTentorial Volume that is indicated in the aseg.stats but unfortunately did not receive any suggestions as yet.
1. SupraTentorial Vol. is defined as Cortex + CorticalWhiteMatter + SubCortGray (http://surfer.nmr.mgh.harvard.edu/fswiki/MorphometryStats) but when I sum up these columns myself from the aseg.stats I do not arrive at the exact value of SupraTentorial Vol that is indicated in the same aseg.stats. For some of my subjects this value is higher, for some it is lower. What could be the reason for these differences? Is CSF and ventricle volume already subtracted from the SupraTentorial Volume? 2. Is it possible to exclude lesions from the volume-based measures by incorporating a self-defined lesion mask for each subject? Any help or suggestions is very much appreciated! Ruthger Righart (PhD) Institute for Stroke and Dementia Research (ISD) Klinikum der Universität München Max-Lebsche-Platz 30 81377 Munich | Germany ruthger.righ...@med.uni-muenchen.de _______________________________________________ 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.
