Hi Gabriel,

I will try it!

Thank you!

2013/3/22 Gabriel Gonzalez Escamilla ggonesc@upo.es

Hi Jordi,

I think you are looking for the information contained on the wiki: http://surfer.nmr.mgh.harvard.edu/fswiki/MorphometryStats

*TotalGray* - total gray matter volume. This is simply the sum of SubCortGray

• lhCortex + rhCortex + CerebellumGM. As such, it includes both

surface-based volume calculations and voxel counts.

To get a volume.mgz for the GM, you can use matlab and the aseg.mgz, or mri_extract_label, both with the number-IDs of the corresponding labels, as found in FreeSurferColorLUT.txt

Cheers, Gabriel.

El 22/03/13, *Jordi Delgado * jordidem@pic.es escribió:

Dear FS experts,

I have a double question about the gray matter calculations in FS:

• Revising the aseg.stats, I noticed that there is a Total Gray Volume

calculation. Is there a mgz volume with the gray matter? I cannot find it on the output mri folder...

• How this total Gray Volume is calculated? Which structures are taken

into account? Is there any file with this information

Kind Regards,

-- Jordi

--

PhD. student Gabriel González-Escamilla Laboratory of Functional Neuroscience Department of Physiology, Anatomy, and Cell Biology University Pablo de Olavide Ctra. de Utrera, Km.1 41013 - Seville

• Spain -

Email: ggonesc@upo.es http://www.upo.es/neuroaging/es/