This seems similar to the IR/near-IR tech under development by 'Openwater', making non-invasive medical imaging tech that may soon offer live high-resolution im

This seems similar to the IR/near-IR tech under development by 'Openwater', making non-invasive medical imaging tech that may soon offer live high-resolution imaging of the brain: https://www.youtube.com/watch?v=k879MFfB_3Q https://www.youtube.com/watch?v=k879MFfB_3Q (Openwater seems to be using sonic pings & massive computing, rather than nanoparticles of a specific element, to achieve contrast at various depths.)