BSIP, GONDELON / SCIENCE PHOTO LIBRARY BSIP, GONDELON / SCIENCE PHOTO LIBRARY
Narrowed neck artery. Coloured 3D computed tomography (CT) scan of a stenosis (narrowing) of one of the carotid arteries of the neck. This view from the side shows the backbone at right. Just to the left of the backbone is one of the carotid arteries (yellow). The stenosis is just left of centre. This reduced the blood flow to the head and to the brain, and caused a stroke (also called a cerebrovascular accident or CVA). Such stenosis is often cause by fatty deposits on the internal wall of the artery. Surgery is required to re-open and repair the artery. CT scanning uses X-rays to scan the body from different angles. Computers create a 3D image of the area scanned.
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