I need everything inside the ribbon,

I can see in the web the fuction mris_volmask that could help me, but I don’t find in my freesurfer (version :stable3)??

An alternative solution I found is the mri_aprac2aseg (with - - ribbon), and tka only tha voxel with value smaller than 1000. it seems like the volume (filled) of the ?h.white.

Is is true? Or the is better solution?

Thanks

Ps: an other small but stupid question: to convert this mask to analyze I use mri_convert but I don’t find a way to have my input in 128*128*128 (and not 256 *256 *256), with mri_label2vol I used –temp but that doesn’t work with mri_convert

---

From: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] On Behalf Of Doug Greve
Sent: mercredi, 15. août 2007 23:11
To: Leila BH
Cc: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] mri_surf2vol

Do you want a mask of just the ribbon or everything inside the ribbon or only white matter inside the ribbon?



Leila BH wrote:

Hi again
I need the volume corresponding exactly to the ?h.white because I am doing
some tractography and my ROI are coming from the parcellation, so the
tractography mask should be the same than ?h.white. that's why I can not use
the aseg.
MRI-fill is more or less the same than imfill in matlab, isn't it? I was
looking for something that fill the volume from the mesh for mere accuracy..
 
Leila
 
-----Original Message-----
From: freesurfer-bounces@nmr.mgh.harvard.edu
[mailto:freesurfer-bounces@nmr.mgh.harvard.edu] On Behalf Of Bruce Fischl
Sent: mercredi, 15. août 2007 22:03
To: Doug Greve
Cc: freesurfer@nmr.mgh.harvard.edu; Leila BH
Subject: Re: [Freesurfer] mri_surf2vol
 
or use mris_fill
On Wed, 15 Aug 2007, Doug Greve wrote:
 
 

Do you want everything in the white surface? That would include more than
 

WM. 
 

If you want just WM, you can use the aseg.mgz, something like:
 
mri_binarize --i aseg.mgz --match 2 --match 41 --o wm.only.mgz
 
you may need a new copy of mri_binarize ...
 
Leila BH wrote:
 
 

Hello,
 
I need to convert the white matte surface to a volume :binary volume with
 

1 
 

in white matter and 0 outside.  I am using the mri_surf2vol command (on 
both hemisphere), and fill it using matlab. Do you know if it is possible
 

to obtain the volume from the surface already filled ?
 
Thanks a lot.
 
Here is the command I use :
 
Mri_surf2vol --mkmask --hemi lh --template /my_image.img --volregidentity
 

mysubject --outvol outputvol_lh.img
 
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-- 
Douglas N. Greve, Ph.D.
MGH-NMR Center
greve@nmr.mgh.harvard.edu
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Fax: 617-726-7422
 
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