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[SPM] segmentation error in spm5?


Dear SPM experts,

I posted this couple of days ago but didn't get any answer.  I'm posting it again to try my luck:

I got a wrong segmentation after coregistering my high resolution T1 3D anatomy to the mean EPI.  The coregistration turned out to be fine when I checked registration.  But the segmentation went completely wrong after the coregistration.  When I checked the c1 and c2, they hardly have any shape of the brain.  Has anyone had this problem before?  Could it be the orientation of my anatomy?  Is there a way to fix this?



Thanks,

Wei