Dear Freesurfers,

I am trying to apply the bias correction on the 7T MEMPRAGE through the unified segmentation algorithm on SPM12, as a primary step to do the submillimetric recon on Freesurfer, as you suggested here:

https://surfer.nmr.mgh.harvard.edu/fswiki/HighFieldRecon

For some reason, I cannot set the Bias FWHM to 18 on the SPM12 interface. Also, not sure how to use the 5D image that I obtain from the process.

Have you ever done this before? Any tips?

Thanks a lot,

Vale