Dear SPMers,
When I realign, I usually write only the mean image, so that
resampling/reslicing is done only once, at the spatial normalization stage.
However, my impression is that to create the mean image, *all* volumes must
be resliced, even if they're not individually written out.
Is this so? If it is, will using trilinear interpolation be much faster
than sinc? My idea: sinc is preferable to trilinear, but here I'm only
creating a mean image in order to determine parameters for normalization,
and not as much accuracy is needed for that. (I plan on using sinc for the
reslicing of the individual images after spatial normalization.)
Best wishes,
Stephen Fromm, PhD
NIDCD/NIH
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