Hi David,
I see what you mean, but do not trust the alignment shown by such images
(where one cannot follow the cortical folds of the datasets). Actually, the way
your older images follow the contours worries me (perhaps you used mutual
information for the cost function?).
My expectation is that the new alignment is good. If you would like me to take
a closer look at a couple of subjects, that would be okay (though we might not
have a working upload method that the moment, I am not sure).
In any case, review the alignment for a subject by turning off the overlay and
using 'u' key to toggle between the anat and EPI as the underlay. That is a
great way to really evaluate the alignment.
- rick