Funnily enough there's a different Martin (Martin Plenio) pushing the boundaries of MRI resolution using quantum effects (molecular hyperpolarization).
Also cool, but it does not push the boundaries of MRI resolution. They try to bring a hyperpolarizer to market for a ¹³C-Pyruvate contrast agent, but it seems their hyperpolarizer is not yet certified. In any case, this will give metabolic information at low resolution so competes with PET.