ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Cerebral arteriovenous malformation. Frontal 3D computed tomography (CT) angiogram scan of an arteriovenous malformation (AVM, upper right) in 36-year-old man's brain. An AVM is an abnormal blood vessel arrangement. An angiogram highlights blood vessels by the injection of a contrast medium. This is a left hemispherical arteriovenous malformation, originating in the arterial branches of the middle cerebral artery.
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