External Email - Use Caution
Dear Freesurfer Experts,
I would like to follow up on my last email and ask if you had a chance to
take a look at it.
Any guidance or feedback would be greatly appreciated!
Thank you for your time!
Best,
Leo
Em dom., 20 de ago. de 2023 às 23:41, Leonardo Cardoso Saraiva <
leonardo.sara...@usp.br> escreveu:
> Dear Freesurfer Experts,
>
> I am using .annot files to extract parcellated vertex-wise morphometric
> features from surf files (e.g., area value from ?h.area file). For each
> vertex, I want to determine the parcel it belongs to and its associated
> morphometric features. During this process, I exclude vertices labeled as
> ‘unknown’ or ‘medial wall’.
>
> In addition to the aparc parcellation, I am also using other parcellations
> computed on fsaverage. Therefore, I need to resample these parcellations
> onto native surfaces. To do this, I am using commands such as the one below:
>
> mri_surf2surf --srcsubject fsaverage \
> --sval-annot ${SUBJECTS_DIR}/fsaverage/label/lh.test\
> --trgsubject sub-test \
> --trgsurfval ${SUBJECTS_DIR}/sub-test/label/lh.test \
> --hemi lh
>
> As a sanity check, I used the above command to resample the aparc
> parcellation onto native surfaces (which is already done by recon-all).
> However, when I use the .annot files generated by the above command to
> extract morphometric features from surf files, I get a different number of
> vertices than when I use the .annot files generated by recon-all. Is this
> behavior expected? Am I doing something wrong?
>
> Thank you for your time and attention.
>
> Best,
> Leo
>
>
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