Cerebral artery in brain. Coloured X-ray angiogram of the head of an elderly male,showing cerebral blood vessels in the brain. A blue profile of the face is seen. Superimposed is a skull X-ray with the blood vessels highlighted (yellow). In the neck region is the carotid artery,which branches into cerebral arteries inside the brain. The brain is the most oxygen-hungry organ in the human body. It receives 20% of the heart's output of blood,and is irreversibly damaged if starved of oxygen for more than a few minutes. Angiograms are obtained by injecting a substance into the blood- stream which is opaque to X-rays. Blood clots or arterial disease may be detected in this way | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Lunagrafix |
Bildgröße: | 4505 px × 3384 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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