It should not have changed the WM volume. Did you happen to see the thread about a bug in mri_segstats? It could be causing this. You can get a new version here:

ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/mri_segstats.linux

The only thing that we have that comes close to quantifying lesions is the volume of WM hypointensities. This will likely underestimate the lesion volume by a lot.

doug

On 04/16/2012 04:58 AM, Gabriel Gonzalez Escamilla wrote:

Dear freesurfers,

May be a silly question:

I'd modified the wm.mgz using the lastest current version of FS as suggested in http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/WhiteMatterEdits?highlig...

Is there any output on FS that quantifies the lesions as volume or something like? When I'd checked the aseg.stats the cortical wm for both hemispheres has changed, as a matter of fact it has been increased when I filled the lesions, which I'm guessing would be a normal behavior, but I'm wondering how to know how much of this wm is lesioned ?

Could you guide me on this?

Many thanks in advanced , Gabriel.

--

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/

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