Hi all
I am trying to get an EPI registered to a T1 (both preprocessed with BET)
and no matter how many parameters I try to change, the results are not good:
the global whole-brain overlapping of the resulting images does not look bad
at first, but at a closer inspection, checking the ventricles and the gyry
overlapping, the registered EPI always ends up lying around 10 mm below the
T1. The images are of reasonable quality (at least to my eye), they cover
most of the brain and have a fairly high resolution (EPI=3x3x3mm,
T1=1x1x1mm). I could try and make a mask out of the ventricles, but I really
see no reason why the registration would fail with normal parameters under
such a standard situation. Did anybody come across the same problem? I'd
hate to have to resort to 'manual' registration....!
thanks for any help
giuseppe
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