blood clots made visible by nanoparticles

Add this to my earlier uses for nanoparticles. And if you can find the clots using nanoparticles you should be able to attach tPA to them  and blow out the clots that way.
http://www.google.com/gwt/x?q=a+picture+of+blood+clot&ei=Y83GTejUEJ_SMICv13w&ved=0CBwQFjAJ&hl=en&source=m&rd=1&u=http://www.gizmag.com/blood-clots-made-visible-by-nanoparticles/17790/picture/129694/
Blood clots made visible by nanoparticles

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A nanoparticle-based process allows blood clots to show up on a new type of CT scan (Image: Wiley-VCH Verlag GmbH & Co. KGaA.)

Article Summary
Every year, millions of people come into emergency rooms complaining of chest pains, yet those pains are only sometimes due to heart attacks. Unfortunately in many of those cases, the only way to be sure of what’s going on is to admit the patient for an overnight stay, and administer time-consuming and costly tests. Now, however, a new procedure could reveal the presence and location of a blood clot within hours. It’s made possible by the injection of nanoparticles, each containing a million atoms of bismuth – a toxic heavy metal.

I would think this could also be used in finding clots in the brain and the timeframe could save a lot of brain cells. Time is Brain, you know.