Brain fibres. 3D diffusion tensor imaging (DTI) resonance imaging (MRI) scan of nerve pathways within the brain. The pathways square measure highlighted in blue.
Image source: SPL
The brain is seen from the facet, with the front of the brain at right. Diffusion tensor imaging measures the direction of water diffusion, that within the brain reveals the orientation of nerve fibres. The technique is additionally called tractography, with the ensuing image called a tractogram.