External Email - Use Caution Hello freesurfers, I have some questions about the output variables of Freesurfer: 1. In the case of brain volume normalization, do I need to normalize all the volumetric results to the eTIV or just the subcortical volumes? 2. Are there any formulas other than simple division in order to normalize the volumes? 3. How are the .ThckStd values (like FS_R_Insula_ThckStd) calculated? What does the "std" mean here? 4. I believe that the surface area outputs are also affected by brain size differences in the population. Are there any reference values in the Freesurfer outputs to which surface areas can be normalized? Thank you in advance for your help. Best regards,Yunus
--------------------------------------------------------------------------------Yunus Soleymani Ph.D. Candidate of Neuroimaging Tehran University of Medical Sciences soleymani.yu...@yahoo.com+98 914 526 9298--------------------------------------------------------------------------------
_______________________________________________ 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 Mass General Brigham Compliance HelpLine at https://www.massgeneralbrigham.org/complianceline <https://www.massgeneralbrigham.org/complianceline> . Please note that this e-mail is not secure (encrypted). If you do not wish to continue communication over unencrypted e-mail, please notify the sender of this message immediately. Continuing to send or respond to e-mail after receiving this message means you understand and accept this risk and wish to continue to communicate over unencrypted e-mail.