Hi Doug, I was wondering if it was possible to have the intensity at the nearest non-zero voxel projected onto the vertex.
Perhaps if we use --projfrac 0.5, mri_vol2surf will select mostly GM voxels, which is our goal. Thanks, Kate On 06/01/2012 12:47 PM, Douglas N Greve wrote: >What do you mean ignore? If you mask them out of the volume so that they >are 0 (or -999), then they will be 0 or -999 in the output. >doug > >On 06/01/2012 12:25 PM, Derin J Cobia wrote: >> Bump. >> >> I'm interested in the answer to this question as well. Doug/Bruce, do >> you know? >> >> -Derin >> >> >> On May 29, 2012, at 8:43 PM, Kathryn I. Alpert wrote: >> >>> Dear Freesufer experts, >>> >>> I am wondering if it is possible to tell mri_vol2surf to ignore >>> certain voxels in the src volume, for instance, by setting their >>> intensity to -999. >>> I'm trying to project only gray matter voxels from a PET scan onto >>> the fsaverage surface, but when I use an only-GM PET image as the >>> src, the zeroed-out WM/CSF voxels are occasionally projected onto the >>> surface (with --interp nearest). >>> Any suggestions? >>> >>> Thanks! >>> Kate >>> _______________________________________________ >>> Freesurfer mailing list >>> Freesurfer@nmr.mgh.harvard.edu <mailto: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 > >-- >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: www.nmr.mgh.harvard.edu/facility/filedrop/index.html > >_______________________________________________ >Freesurfer mailing list >Freesurfer@nmr.mgh.harvard.edu >https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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