Healthy brain, composite of tractography and MRI

Composite image of the brain from a healthy young adult. The brain is viewed from the front (coronal view) with the right hemisphere on the left of the image and the left hemisphere on the right side of the image. The right hemisphere is a 3D reconstruction from structural 3T magnetic resonance imaging (MRI) data (pink), while in the left hemisphere, nerve fibres have been visualised using diffusion imaging tractography (multi-coloured). Diffusion weighted imaging is a specialised type of magnetic resonance imaging (MRI) scan which measures water diffusion in many directions in order to reconstruct the orientation of bundles of axons. Tractography is used to indirectly model these bundles of axons (nerve fibres), which transmit information between cortical regions at the brain's surface.