Category 107
Assessment centreImagingBrain MRI ⏵ Diffusion brain MRI


Diffusion-weighted imaging is a structural technique that measures the ability of water molecules to move within their local tissue environment. Water diffusion is measured along a range of orientations, providing two types of derived phenotype variables. Local (voxel-wise) estimates of diffusion properties reflect the integrity of microstructural tissue compartments (e.g., diffusion tensor estimates). Long-range estimates based on tract-tracing (tractography) reflect structural connectivity between pairs of brain regions.