Hi, all spm experts. I'm using spm2. My data is a 64*64*28*404 nii data. I first
decomposed it from a 4-D data to a 3-D series. I did the realignment using
spm_realign. After that I wanna do the unwarping using spm_uw_estimate and
spm_uw_apply, while the results are strange, which shows all the volumes
seems to be shifted. The volumes before and after unwarping are attached.
Because the whole data is too large, there are only the first 3 volumes. The
volumes' name start with a 'u' are the volumes after unwarping.Could you tell
me what's wrong and how I can fix it? Thanks!
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