Hello all,
I am having troubles with coregistering two images (ref: T1 anatomical, src: Spiral CT). I need those images to be coregistered and resliced for ECOG electrode localization.
If I do the coregistration (est&reslice) with both images in Analyze format, it works perfectly fine.
Now I tried to do it in Nifti format (I converted the DICOM images using spm_dicom_convert), as this is the format SPM8 expects, and the coregistration does not work anymore. It looks like the algorithm does not converge; I get a straight line in the line minimisation plot and if I wouldnt stop it, I dont think that the coregistration would come to an end.
I checked the two images before coregistering using SPM's 'check reg' option and to me it looks like the two images are already aligned good.
What does it mean if a straight line appears in the line minimisation plot? An how can I fix the problem of no convergence when using nifti format?
Any help would be greatly appreciated.
Thanks in advance,
Lukas
Lukas Muhr
g.tec medical engineering
www.gtec.at
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