ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Coronary artery disease. Coloured 3D computed tomography (CT) angiogram of a calcification of the right coronary artery (lower centre) where it joins with the aorta, in a 65-year-old man with coronary artery disease (CAD). The calcification has caused a severe narrowing (stenosis, arrows) of the artery. CAD is a condition affecting the coronary arteries that supply blood to the heart muscle. If these arteries become blocked or narrowed, this can cause a heart attack (myocardial infarction). For this image without arrows, see C038/8842.
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