Streamline Tractography

Tensor shapes are calculated inside the many voxels that make up brain scans by looking at the direction of water diffusion. Different scanning techniques allow for different levels of accuracy and detail. DTI is a special form of magnetic resonance imaging (MRI) in which the directionality of water molecule diffusion is mapped. The water diffusion at every spatial point in the image volume is analyzed and used to determine the pathways that white matter fibers take throughout the brain, linking various ar