Hi all,

I am using Freesurfer 6.0 for hippocampal subfield segmentation (Mode B:  -hippocampal-subfields-T1T2).
For each subject, I have a 3T-T1 MRI (whole brain) and a 7T-T2 MRI (partial brain).

Segmentation works in most subjects, but in some subjects the co-registration of the 7T-T2 MRI scan fails.
[Despite good scan quality and pre-alignment using Freeview]

I was wondering if you had any input/suggestion(s) for fixing this error (e.g. using mri_register)?