Is DTI structural or functional?

Thus, DTI provides information about structural connectivity, as compared to functional connectivity data from rsFMRI. Perhaps most importantly, DTI can illustrate to the surgeon the relationship of a tumor to underlying white matter tracts.

How does diffusion tensor imaging?

In simplified terms, diffusion imaging works by introducing extra gradient pulses whose effect “cancels out” for stationary water molecules, and causes a random phase shift for molecules that diffuse. Due to their random phase, signal from diffusing molecules is lost.

What does a DTI scan show?

A DTI scan can reveal whether or not the water molecules in the axons are flowing properly along axonal directions. The scan showcases white matter pathways as multicolored fibers. If the DTI scan identifies water flow is obstructed or misdirected in white matter, that finding can be evidence of a TBI or concussion.

What is a diffusion weighted image?

Diffusion weighted imaging (DWI) is a method of signal contrast generation based on the differences in Brownian motion. DWI is a method to evaluate the molecular function and micro-architecture of the human body.

What is diffusion spectrum imaging?

Diffusion spectrum imaging (DSI) is an advanced magnetic resonance imaging (MRI) technique that display crossing fibers and complex intravoxel fiber orientation distributions reliably and accurately [7].

Can a DTI detect a TBI?

DTI has been found to be sensitive for detection of acute and chronic TBI changes within the brain at the group level.

Why diffusion tensor imaging is important?

Diffusion Tensor Imaging (DTI)☆ DTI provides image contrast based on differences in the magnitude of diffusion of water molecules within the brain. By measuring the directional dependence of water molecule diffusion, DTI generates unique tissue contrasts that can be used in the study of axonal organization in the CNS.