afni.nimh.nih.gov

Dear rick，

Here are the Information from 3dinfo：

Data Axes Orientation:
  first  (x) = Right-to-Left
  second (y) = Posterior-to-Anterior
  third  (z) = Inferior-to-Superior   [-orient RPI]

which seems to be I to S on the disk, I think it should be alt-z according to your post above, am i right?

Best wishes,
Peng