Re: [Freesurfer] mris_register external atlas

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Thank you, that worked!

To recap, I've been trying to align the annotation files from the UNC cortical surface atlas to my subjects. I'm using Freesurfer version 8.0.0 with Linux.

Following mri_surf2surf with my registration file, I got a new annotation file, but when I try to run mri_annotation2label, it stalls out instead of finishing the command output, trailing off with this: "calling annotation2labelV2()..."

Is there any way to fix this so that I can get the label files from my .annot file?

Thanks, Stefanie

________________________________ From: Zollei, Lilla,Ph.D. LZOLLEI@mgh.harvard.edu Sent: Wednesday, April 2, 2025 10:59 AM To: Stefanie Bradley stefanie.bradley@mail.utoronto.ca; Freesurfer support list freesurfer@nmr.mgh.harvard.edu Subject: Re: mris_register external atlas

Hi Stephanie, I believe you want to compute your registration the other way, if you want to infer atlas parcellation labels to the subj space. Lilla ________________________________ From: Stefanie Bradley stefanie.bradley@mail.utoronto.ca Sent: Wednesday, April 2, 2025 10:49 AM To: Freesurfer support list freesurfer@nmr.mgh.harvard.edu Cc: Zollei, Lilla,Ph.D. LZOLLEI@mgh.harvard.edu Subject: Re: mris_register external atlas

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Hi Bruce,

Thanks for your response. I was able to get the smoothwm surface, to make a registration file (lh.sphere.reg).

When I then try to use mri_surf2surf, it says that the dimensions are not aligned (atlas surf files - 163 842 vertices; subject surf files - 127 845 vertices). The lh.sphere.reg file has 127 845 vertices. Is there a way to fix this so that I can proceed?

Thanks, Stefanie ________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Fischl, Bruce R.,PHD BFISCHL@mgh.harvard.edu Sent: Monday, March 31, 2025 4:41 PM To: Freesurfer support list freesurfer@nmr.mgh.harvard.edu Cc: Zollei, Lilla,Ph.D. LZOLLEI@mgh.harvard.edu Subject: Re: [Freesurfer] mris_register external atlas

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Hi Stefanie

The registration is based on the curvature of the smoothwm surface (among other things) so not easily. Lilla might know more about that atlas.

Bruce

From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu On Behalf Of Stefanie Bradley Sent: Monday, March 31, 2025 4:35 PM To: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] mris_register external atlas

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Hi there,

I am trying to register my Freesurfer subject's cortical surface into a common space to use the parcellations from a pediatric atlas (UNC 4D cortical surface atlas).

With Freesurfer version 8.0.0 in a Linus OS, I am using mris_register as: mris_register -1 individual_subject/lh.sphere 4D_atlas/lh.sphere individual_subject /lh.sphere.FS.reg.

I am getting an error where it says it requires a smoothwm file from the atlas files, though I only have curvature and sphere files from the atlas. Is there a way to register the atlas files to my subjects and then put the parcellations onto my subject's cortical surface?

Thanks,

Stefanie

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