you will have to reslice, e.g. using your script, or realign/reslice only
or spm_imcalc. The latter options are useful if you have a reference image
already. Then, you can use your reference image as first image, and the
image to be resliced as 2nd image. In imcalc, just say "i2" as formula.
Note, that reslicing is the only way to encode arbitrary reorientations
into analyze files. Thus, you will definitely loose some accuracy, even if
you keep voxel sizes almost identical.
On Sat, 7 Apr 2007, Jeff Browndyke, Ph.D. wrote:
> The inability to call up SPM2 Reoriented Images in the .mat changed
> orientation in other programs (SNAP) is causing problems when we are
> attempting to marry manual ROI masks to the SPM2 reoriented anatomicals.
> Is there a way to permanently write the .mat orientation parameters to the
> anatomical .hdr files? I would like to have the ability to call up the same
> (corrected) orientation in several different imaging platforms. We're stuck
> right now with SPM2, so any workarounds other than the typical "upgrade to
> SPM5" would be most helpful.
> BTW - we were using a resize_img script, that appeared to be based upon
> J.Ashburner script functions, but the resulting files were reduced in image
> intensity and appeared smoothed eventhough we did not change the voxel sizes
> (only the origin/orientation).
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