Hi Dou, I have had some issues with running mri_volsynth.
It is not clear how to specify the coordinate for the selected vertex. I tried it by adding the flag --c_ras x y z, but did not work? Thanks Cris ________________________________ From: freesurfer-boun...@nmr.mgh.harvard.edu [freesurfer-boun...@nmr.mgh.harvard.edu] on behalf of Douglas Greve [gr...@nmr.mgh.harvard.edu] Sent: Tuesday, December 13, 2016 4:50 PM To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Label creation Not that easy. I would do it by selecting a vertex that is close to the coordinate you want, then 1. Create a surface overlay with all vertices = 0 except your chosen vertex mri_volsynth --template $FREESURFER_HOME/fsaverage/surf/lh.thickness --delta vertexno 0 0 0 --o delta.mgh 2. Smooth the overlay to expand the non-0: mri_surf2surf --s fsaverage --hemi lh --sval delta.mgh --tval delta.smoothed.mgh --nsmooth-in 10 This will expand out to a radius of 10 vertices 3. Binarize it mri_binarize --i delta.smoothed.mgh --min .000000001 --o delta.smoothed.bin.mgh 4. Create the label: mri_cor2label --i delta.smoothed.bin.mgh --l delta.smoothed.bin.label --surf fsaverage lh white On 12/13/16 12:53 PM, Leyton Moscoso, Cristian Eduardo wrote: Hi Freesurfer's experts Is there an easy way to create automatically a circular label with a radius centered on a vertex with predifined RAS/Tailarach coordinates on the fsaverage surface? Thanks Cris _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu<mailto:Freesurfer@nmr.mgh.harvard.edu> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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