To whom it may concern:
I am currently trying to import the AAL Atlas from SPM to FSL. So far I have normalized the SPM T1 template to the MNI152 T1 template using FLIRT and then applied the resulting warp to all 90 SPM AAL Atlas ROIs. However, this warping procedure did not work properly, as many (but not all) of the normalized ROIs appear shifted rightwards along the x-axis (for instance, the normalized left SMA extends past the mid-line, and the right inferior frontal region hangs outside the brain-boundary), whereas prior to normalization they were anatomically correct. Does anyone have an idea of what may have gone wrong and/or have suggestions for a better AAL->FSL conversion procedure?
Thanks in advance,
Anna
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