CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
False-colour magnetic resonance image (MRI) of a coronal (frontal) section through the head of a healthy human infant, showing the division of the cerebrum (the main part of the brain) into left and right cerebral hemispheres. Colour-coding of the original black & white scan reveals the outer grey matter of the cerebral cortex in yellow and the inner white matter in green. The red area in centre is part of the system of ventricles, cavities in the centre of the brain filled with cerebro-spinal fluid. MRI is also called NMR - nuclear magnetic resonance imaging, but unlike CT (computed tomography) scanning does not use ionising radiation.
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