Blood clots made visible by nanoparticles

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.

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