Hi Dhruman,

the total white matter volume should probably be removed. It's currently the total volume of all "on" voxels in the wm.mgz volume, which won't include cerebellum. I think the aseg values should be more accurate.

cheers, Bruce

On Tue, 6 Jun 2006, Goradia, Dhruman D wrote:

Hello all,

The output of mris_anatomical_stats has a measurement called TotalWhiteMatterVolume for each hemisphere. From aseg.stat the measures for cerebellum-white volume and cerebral-white volume for each hemisphere can be obtain, but the sum of both the measures obtained from aseg is less than the total white matter volume obtained from the surface measures. Should they be different? If so what is the difference in measurement criteria?

Thank you

-Dhruman