DTI, which has a lower resolution than other forms of MRI, supposedly maps the paths axons take in white matter and show the physical connectivity of the brain.

Are these Voxels overlapping to any extent to artificially make higher resolutions? Or is there something I'm missing.

There's a fine line between mapping where white matter is and mapping the individual connections and directions within. I'm having trouble wrapping my head around that, I know that DTI can read for diffusion resistance and thus directionality, but that would seem to require a higher resolution given the complexity of the white matter tracts.

My issue with this explanation is that techniques like diffusion tensor imaging (a form of dMRI) can map paths taken in the white matter (ie the actually axons of neurons, and the myelin on this axons that make white matter white in the first place). Axons are very thin iirc, and while the cortex is thicker than the resolution of the MRI, how can it map things smaller than that resolution?

Do Voxels overlap?