Diffusion tensor imaging (DTI) is a type of magnetic resonance imaging (MRI) technique that measures the diffusion of water molecules in tissues, particularly in the white matter of the brain. It provides information about the microstructure and organization of white matter pathways in the brain, such as the direction and strength of connections between different regions. DTI is commonly used in neuroscience research to study brain connectivity, development, and changes in neurological disorders. By analyzing the diffusion data, researchers can create maps of white matter tracts and quantify various properties, such as fractional anisotropy (which reflects the directionality of water diffusion) and mean diffusivity (which reflects the overall magnitude of diffusion). Overall, diffusion tensor imaging plays a crucial role in understanding the structural connectivity of the brain and how it relates to various cognitive functions and neurological conditions.