SOVEREIGN / ISM / SCIENCE PHOTO LIBRARY SOVEREIGN / ISM / SCIENCE PHOTO LIBRARY
Coronary stents. Computed tomography (CT) scan of the heart of a 62-year-old man showing two stents (blue) that have been implanted in the anterior interventricular artery (part of the coronary arteries) to treat stenosis (narrowing). This procedure is known as coronary angioplasty. Stents are wire mesh tubes that are used to provide support of passageways within the body. Here they are being used to widen the section of artery that has become narrowed.
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