False-colour arteriograph of the human head

False-colour arteriograph of the human head

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Credit: ALAIN POL, ISM/SCIENCE PHOTO LIBRARY

Caption: False-colour arteriograph (angiograph) of the human head, showing the network of normal arteries that supply oxygenated blood to the brain. Angiography is the X-ray examination of anartery that has been outlined by the prior injection of a radio-opaque contrast medium. The technique is used to evaluate presence of cerebro- vascular disease, whereby the vessels become blocked by fatty plaques (atheroma) or rupture due to hypertension (high blood pressure), resulting in an interruption or reduction in the blood supply to the brain. A sudden & severe attack (a stroke) may lead to paralysis & death.

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Keywords: anatomy, angiography, arteriography, artery, brain, central nervous system, cerebral, cns, false-coloured, human body

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