Not an expert, but from my read they built this basically by combining an MRI sensor with a scanning tunneling probe - so it's set up kind of like atom-sensing

Not an expert, but from my read they built this basically by combining an MRI sensor with a scanning tunneling probe - so it's set up kind of like atom-sensing atomic force microscopes (https://en.wikipedia.org/wiki/Atomic_force_microscopy https://en.wikipedia.org/wiki/Atomic_force_microscopy). It doesn't seem like this technique would give you much depth penetration inside the body for one thing, and it'd be tough to process across human scales in a reasonable time. There are a lot of atoms in those 1mm-ish voxels of a medical MRI. It might be useful for purposes similar to AFMs or electron microscopes in the future, though.