Anything nano also has the potential to be somewhat more than a diagnostic tool.
This could also be developed into an in situ treatment program, by injecting nano-components into the bloodstream which would have the capability of recognising cancer cells "on sight."
It could form the basis of a new type of "T-cell", a techno-cell, which would augment the body's natural immune system.
An ability to recognise the cancer cell is the big news here. That has always been the hurdle.
I posted an article in the last week or two about advances in recognizing cancer cells "on sight," but alas, it too wasn't considered newsworthy enough by the saturday night moderator who banned it to the blogs.