Greetings all,

I'm new to freesurfer, so apologies if this has been covered. Two questions about early processing:

1) It looks like the recon-all script averages multiple T1's prior to correcting inhomogeneity. If processing T1's acquired on different days, and/or on different scanners, might it be advantageous to manually run mri_nu_correct.mni on each individually before averaging? Other than CPU time, why average first and then correct for inhomogeneity?

2) Is freesurfer's use of MNI_N3 over FSL's fast inhomogeneity correction algorithmic, empirical, historical, or other?

Thanks!
Stephen


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Stephen Towler
[EMAIL PROTECTED]
352-294-0048 office
352-258-6409 mobile
352-392-8347 fax

Leonard Lab
Department of Neuroscience
PO Box 100244
University of Florida HSC
Gainesville, FL 32610
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