Clinicians around the world perform millions of endovascular procedures per year, using catheters and guided by X-rays to place stents or remove blood clots. That's a lot of radiation for patients and physicians to endure, and the X-rays don't even provide the most precise images, according to Torben Pätz, a mathematician at the Fraunhofer … [Read more...] about These tiny ‘mirrors’ could make tracking catheters easier