Yeah I thought about something similar, like coregistering the 45 slices to a 47 slices scan using 6 DOF, then take it from there, ie register it to the corresponding highres, concat the transformations (TM to the 47 with the one to the highres) and then update the registration using update_feat but I am a bit worried whether this is legitimate - I hope the small difference in acquisition would be neglectible.
Thanks,
Torsten
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