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SHERBROOKE CONNECTIVITY IMAGING LAB / SCIENCE PHOTO LIBRARY SHERBROOKE CONNECTIVITY IMAGING LAB / SCIENCE PHOTO LIBRARY
Brain fibres. 3D diffusion tensor imaging (DTI) magnetic resonance imaging (MRI) scan of a selection of nerve pathways (green/yellow) in the brain. The brain is seen from above, with the front of the brain at bottom. The ventricles are pink and the brain's cortical surface (only shown at left) is blue. Diffusion tensor imaging measures the direction of water diffusion, which in the brain reveals the orientation of nerve fibres. The technique is also known as tractography, with the resulting image known as a tractogram.
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