Circle of Willis blood vessels

Circle of Willis blood vessels

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Credit: BSIP/SCIENCE PHOTO LIBRARY

Caption: Circle of Willis. Magnetic resonance imaging (MRI) angiogram of blood vessels in the circle of Willis (lower centre) in the brain. This is a network of arteries at the base of the brain which supplies much of the brain with oxygenated blood. MRI scans produce slice images through tissues using a powerful magnet and pulses of radio waves. To produce an angiogram, a contrast material is introduced into an artery so that the blood vessels can be visualized.

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Keywords: anatomical, anatomy, angio-mri, angiogram, angiography, arteries, artery, base, black-and-white, blood, blood vessel, brain, central nervous system, circle of willis, cns, cranial, human body, magnetic resonance imaging, medical, medicine, monochrome, mri scan, radiography, scanner, supply, vascular, vessels, willis' circle

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