[Freesurfer] Using SPM segmentations in FreeSurfer

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Hi,

I have been trying to incorporate segmentation files from SPM into FreeSurfer to improve the surfaces, but I am not sure if I am going about it in the right way. I have been replacing the wm.mgz file with a file from SPM and then running ‘recon-all -s ${subject} -autorecon2-wm -autorecon3’, but I keep getting errors. I have tried using both conform and conform_min as part of mri_convert when replacing the wm.mgz file with an SPM file but in both cases I still get errors.

Are there other steps I should be taking or a different line of code I should run to get this to work?

Thanks, Nathan