K H FUNG / SCIENCE PHOTO LIBRARY K H FUNG / SCIENCE PHOTO LIBRARY
Brain blood vessels. Coloured frontal 3D magnetic resonance imaging (MRI) and computed tomography (CT) scans of arteries (red) and veins (blue) supplying and draining blood from the brain (orange). At lower centre are the internal and external carotid arteries and vertebral arteries.
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