Hi FSL Experts,

I would like to use PALM to look at inter-modality relationships (PET and MRI) and other patterns. Is it important to achieve the same level of smoothing before I do the analysis? I would like to compare things like Z scores (against another group) and voxel-to-voxel correlations. How can determine the formula to smooth my MRI to such a way that it is a smooth as PET?

Thank you.

Shane