At the course, André van der Kouwe mentioned in his morphometry methods talk that T2* weighted contrast from MEMPRAGE could be used to further seperate dura from cortex, as also discussed in this paper: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2408694/.  We have a GE scanner in our lab.  The internet suggests that a Multi-echo FSPGR/FGRE exists.  Would this be the analog?  Would it work the same way?  Could you also use these images with the mris_make_surfaces command?

Thanks very much for your insight -- and I enjoyed the course!