Diffusion Weighted Imaging Diffusion of water is random---isotropic White matter tracts---anisoptropic, or directional Highly sensitive to motion o Intracellular water(restricted water)is not susceptible to the diffusion gradients Mobile water loses signal intensity due to dephasingDiffusion Weighted Imaging • Diffusion of water is random---isotropic • White matter tracts---anisoptropic, or directional • Highly sensitive to motion • Intracellular water (restricted water) is not susceptible to the diffusion gradients • Mobile water loses signal intensity due to dephasing