Brain arteries. Coloured three-dimensional MRA (magnetic resonance angiography) scan of healthy arteries (red) supplying a human brain (nervous tissue

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Brain arteries. Coloured three-dimensional MRA (magnetic resonance angiography) scan of healthy arteries (red) supplying a human brain (nervous tissue not seen) with oxygenated blood. The front of the brain is at left in this side (sagittal) view of the blood vessels. MRA is a magnetic resonance imaging (MRI) technique that highlights blood vessels without the use of X-rays or the need to inject a radio-opaque contrast medium.

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Photo credit: © ZEPHYR/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
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