Dear all,
For a longitudinal analysis I need to have within subject templates. After
some preprocessing that included FSL's BET, and linear registration of all
time points to time-point 1, I fed images to mri_robust_template:
mri_robust_template --mov tp1 tp2 tp3 --template <template_address> --satit
It runs fine for some subjects, however I get the following error for some
others:
ERROR: All entries are zero! Images do not overlap (anymore?).
This can have several reasons (i.e. different modalities, different
intensity scales, large non-linearities, too diff. voxel sizes ...)
Maybe use --transform <init.lta> with an approx. alignment
obtained from tkregister or another registration program.
Or do some prior intensity correction?
I have rechecked data, they are bias corrected, and coregistered.
Any thoughts of what could possibly go wrong here?
All the best,
Arman
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