can you imagine a doctors office or pathology room, where they...

can you imagine a doctors office or pathology room, where they give you a injectable nano particle for say prostate cancer test, and then scan you with MRX. Now that will show up as a signature if you have it, in very low number of cells, like as little as that 10,000 cells, like a blip on a radar screen. Something is, or is not there.
Then they take a MRI or whatever the next step is in attaining a detailed image of the exact location, that you would miss otherwise from a simple picture.

The thing to note, is that MRI is great at taking pictures, but only MRX will give the radar Blip, to identify to incoming air traffic.

As far as MRI is concerned, it could be taking a picture of a flock of sea gulls, or migrating ducks for the winter.
But MRX, will tell you, no , thats the killer bees we've been looking for, or not.