On 10/24/2012 09:01 AM, Zheng Hui wrote:

Hi freesurfer,

We are trying to calculate the total cerebral volume which excludes cerebellum, brainstem, ventricle and CSF from the aseg.txt. Do we use

CortexVol + CorticalWhiteMatterVol + SubCortGrayVol Or CortexVol + CorticalWhiteMatterVol + Sum(all structures (after ICV in the list) except ventricle, CSF, cerebellum and brainstem)

This should give very close to the same value. I don't think it makes a difference.

Also, I saw Doug's post about the bug fixing for SupraTentorialVol. To re-run the segstats for longitudinal subjects, any extra step other than "recon-all –long tpN baseID –segstats" and does it affect any other structure or just SupraTentorialVol?

It should not affect other structures. doug

Thank you, Zheng Hui

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