> > Hi Doug: > > When you talk about zero out subcortical region, when does this zero > out happen? it should happen after register vertex into functional > space, right? Then it happens before functional space interpolation > or after interpolation?
It happens after interpolation. > > And one more question about the register.dat file used for this > process. whose resolution info is used in register.dat file ? the low > resolution functional image (moving image) or high resolution anatomy > image? Is the resolution of fsaverage is 2mm*2mm*0.15mm? The low resolution (though those numbers are no longer used internally -- the resolution is obtained from the mov volume). doug > > Thanks much! > > Jing > > Date: Tue, 26 Apr 2011 17:11:45 -0400 > From: gr...@nmr.mgh.harvard.edu > To: freesurfer@nmr.mgh.harvard.edu > Subject: Re: [Freesurfer] about mri_vol2surf > > > > > > > > > > Hi Jing, by default it does include all the non-cortical structures > in the medial wall, including any subcortical structures. If you > include --cortex in the command-line it zeros them out. The way it > works is that it goes through each vertex on the surface, gets the > RAS coordinate for that vertex, applies the registration matrix to > map it into the function space, then samples the function value > using nearest neighbor (can change to trilinear with --interp > trilin). > > > > doug > > > > On 4/26/11 1:51 PM, Jing Ming wrote: > > > Hi Surfers: > > > > I am using mri_vol2surf to project fMRI result into the > fsaverage surface. And the fMRI result may contain some > subcortical regions, so, I wonder mri_vol2surf will automatically > get rid of the subcortical region and only map cortical area into > surface right? Is there any material about the mapping algorithm > of mri_vol2surf? Thanks much! > > > > Jing > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > > > _______________________________________________ > 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. _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
