DARRIGRAND / CNRI / SCIENCE PHOTO LIBRARY DARRIGRAND / CNRI / SCIENCE PHOTO LIBRARY
Occluded carotid artery, X-ray. Coloured angiogram of a section through the neck of a patient, showing an internal carotid artery (red, left) that has become blocked (occluded). Vascular occlusion is a blockage of a blood vessel, usually caused by a blood clot (thrombus).
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