SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY
Coloured three-dimensional Computed Tomography (CT) angio scan in side view of the blood vessels in the brain of a 37 year old male patient, showing an aneurysm (bulging, at lower centre) of the termination of the right internal carotid artery. Aneurysm is the ballooning of an artery due to weakening of the artery wall.
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