Hi Peter,

recon-all produces an estimate of ICV.   In aseg.stats there is a line that looks like:

# Measure EstimatedTotalIntraCranialVol, eTIV, Estimated Total Intracranial Volume, 1696008.240403, mm^3

You can read more about how it is computed at
MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be https://surfer.nmr.mgh.harvard.edu/fswiki/eTIV

-Paul

________________________________________
From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Mirsol Choi <mirsol@ualberta.ca>
Sent: Wednesday, November 1, 2023 5:23 PM
To: Freesurfer support list
Subject: [Freesurfer] Finding Intracranial volume

        External Email - Use Caution

Hi fellow freesurfers!

I am a Masters student currently working with diffusion images.

I would like to ask you experts how I can obtain ICV from my T1/T2 or diffusion images.

Is there a certain output from recon-all that produces intracranial volume? Or is there a different command I must use?

Thank you all so much for your time. I look forward to hearing from you.

Peter

_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be 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 MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be https://www.massgeneralbrigham.org/complianceline <MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be 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.