You can mask it with the mri.2mm/aseg.mgz ventricle definitions.
However, there is a flaw in your understanding. What you see as
ventricle or WM may be GM in several/many subjects. The 12DOF
registration is not so good that it get all these things lined up properly.
On 11/23/2015 03:16 AM, std...@virgilio.it wrote:
> Hi list,
> I'm performing fcMRI-seed based by FS-FAST.
> After group comparison and Monte Carlo correction I obtained cortical
> and subcortical clusters in pos and neg maps.
> On subcortiacal maps, significant clusters at
> grf.th1.3.pos.sig.cluster.nii.gz showed some voxels on ventricle or
> white matter. At 3.pos.sig.cluster.nii.gz the maps are clearly defined.
> Thus, I'd like to delete voxel on white matter or ventricle to shows
> activation only on grey matter from grf.th1.3.pos.sig.cluster.nii.gz.
> Is it possible to do it?
> Thanks
>
> Stefano
>
>
> ___
> Freesurfer mailing list
> Freesurfer@nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
--
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
Phone Number: 617-724-2358
Fax: 617-726-7422
Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
www.nmr.mgh.harvard.edu/facility/filedrop/index.html
Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
___
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.
