Coronary stenosis. Coloured 3D computed tomography (CT) angiogram of the right coronary artery of a 59 year old patient with a stenosis (narrowing, lo

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Coronary stenosis. Coloured 3D computed tomography (CT) angiogram of the right coronary artery of a 59 year old patient with a stenosis (narrowing, lower left). Stenoses typically arise when an artery is blocked by fatty deposits and cholesterol. The vessel will need to be dilated surgically to restore normal blood flow.

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Photo credit: © ZEPHYR/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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