Hi,

I have bias-corrected and co-registered longitudinal images, and I'm interested to use Freesurfer to construct unbiased within-subject templates (to be used in SPM). Using mri_roubust_template, I get the following error message on some (not all) of the subjects. I was wondering whether I could use options/flags to avoid this.

-------------------------------------------------------- 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? --------------------------------------------------------

All the best, Arman