FIGURE 7-16 Diffusion Tensor Imaging MRI can measure the diffusion of water molecules in white matter, allowing the visualization of nerve fiber tracts. The front of the brain is at the top in these scans of sections through a healthy brain. The axons are colored according to orientation: fibers running left–right are red, front–back are blue, and up–down are green. Section 15-3 outlines how DTI is helping researchers develop a brain connectome to map functional connections in the living brain.

Zephyr/Science Source