Total Brain Volume

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Anil Roy

28 Jul 2006 28 Jul '06

12:15 p.m.

Hello All,

Does freesurfer generate a file with total brain volume after the recon-all procedure? Where can this be accessed?

Thanks,

AR.

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Jenni Pacheco

28 Jul 28 Jul

12:34 p.m.

Hi Anil,

There are two values in the aseg.stats file - BrainMaskVOl and BrainSegVol. BrainMaskVol is the volume of all the voxels that are included in the brainmask.mgz volume. BrainSegVol is the volume of all the voxels that are labeled in the aseg.mgz segmentation.

-- Jenni Pacheco, M.A. Massachusetts General Hospital Athinoula A. Martinos Center for Biomedical Imaging Bldg. 149, 13th Street, CNY 2301 Charlestown, MA 02129 jpacheco@nmr.mgh.harvard.edu On Fri, 28 Jul 2006, Anil Roy wrote: > Hello All, > > Does freesurfer generate a file with total brain volume after the recon-all > procedure? Where can this be accessed? > > Thanks, > > AR. >

Doug Greve

2:40 p.m.

There's also an estimated total intracranial volume (eTIV) in aseg.stats -- not the same thing as brain volume but close enough that you might be interested.

doug

Jenni Pacheco wrote:

...

Hi Anil,

There are two values in the aseg.stats file - BrainMaskVOl and BrainSegVol. BrainMaskVol is the volume of all the voxels that are included in the brainmask.mgz volume. BrainSegVol is the volume of all the voxels that are labeled in the aseg.mgz segmentation.

-- Douglas N. Greve, Ph.D. MGH-NMR Center greve@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 In order to help us help you, please follow the steps in: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting

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Anil Roy
Doug Greve
Jenni Pacheco