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Freesurfer experts,
I have a volumetric ROI (integer valued) in MNI space. I'd really like to display them on the fsaverage brain as a surface overlay so that it's clear what regions I'm looking at.
Using something like this, I get pretty good results:
mri_vol2surf --mov ROI_integers.nii --regheader fsaverage --hemi lh --out left_overlay.mgh --projfrac-max 0.15 .17 .01
but the edges are kind of a mess, see: https://imgur.com/a/53RVGCM
Is there any way to smooth these edges while maintaining the "lookup table' nature of the surface overlay? Any kind of interpolation ruins that, so it's a bit hard (you can't see in that image, but there are multiple regions shown).
Alternatively, is there any way I can do arithmetic with surfaces? If there were a tool like fslmaths for surface overlays, solving this problem would be relatively straightforward.
Thanks for any help you can provide!
-quentin funk
Houston Methodist. Leading Medicine. Houston Methodist is ranked by U.S. News & World Report as the No. 1 hospital in Texas and among the top 20 hospitals nationwide. Houston Methodist is the only nationally ranked Honor Roll hospital in the state and is designated as a Magnet hospital for excellence in nursing. houstonmethodist.org | twitter.com/MethodistHosp | facebook.com/HoustonMethodist ***CONFIDENTIALITY NOTICE*** This e-mail is the property of Houston Methodist and/or its relevant affiliates and may contain restricted and privileged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender and delete all copies of the message. Thank you.