Total Gray includes the cerebellar gray doug On 05/24/2013 03:51 PM, Ritobrato Datta wrote:

Hello All,

Can someone address the following ? I sent this query yesterday but it fell through the cracks.

I am using freesurfer 5.1 for my analysis.

I am interested in calculating the whole brain vol (total Gray vol + total WM vol) excluding the CSF volume and cerebellum.

Total Brain Vol = TotalGrayVol + CorticalWhiteMatterVol

In all of the 79 subjects, when I compare the Total Brain Vol to SupraTentorialVol, I find SupraTentorialVol is smaller than the Total Brain Vol I have calculated.

Here are some measures -

For 79 subjects -

Average Total Brain Vol = 1038395.291

Average SupraTentorialVol = 979996.4684

Is that expected ?

Is it possible that CSF vol is part of Total Brain Vol ?

Any insight will be helpful.

Thanks

Rito

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