Is DTI a type of MRI?

Diffusion tensor imaging (DTI) is an MRI technique that uses anisotropic diffusion to estimate the axonal (white matter) organization of the brain. Fiber tractography (FT) is a 3D reconstruction technique to assess neural tracts using data collected by diffusion tensor imaging.

What is MRI tractography?

In neuroscience, tractography is a 3D modeling technique used to visually represent nerve tracts using data collected by diffusion MRI. It uses special techniques of magnetic resonance imaging (MRI) and computer-based diffusion MRI. The results are presented in two- and three-dimensional images called tractograms.

What does DTI stand for in MRI?

Diffusion tensor imaging (DTI) detects the white matter fibers that connect different parts of the brain. These imaging studies help to map specific brain areas before surgery.

What is diffusion tractography?

Introduction. Magnetic resonance diffusion tractography is a method for identifying white matter pathways in the living human brain. These pathways form the substrate for information transfer between remote brain regions and are therefore central to our understanding of function in both the normal and diseased brain.

Is Diffusion MRI the same as DTI?

Diffusion tensor magnetic resonance imaging (DTI) is a relatively new technology that is popular for imaging the white matter of the brain….Table 1.

What is the difference between MRI and MRS?

The principal difference between MRI and MRS is that in MRI the emitted radiofrequency is based on the spatial position of nuclei, while MRS detects the chemical composition of the scanned tissue.

How is a DTI MRI performed?

The DTI tractography is performed in an MRI scanner, which is a large tube surrounded by a circular magnet that creates a magnetic field around you. You will lie on a table that slides into the MRI scanner. DTI tractography images rely on your ability to be still in order to create clear images.

How does diffusion tractography work?

Diffusion tractography uses non-invasive brain imaging data to trace fibre bundles in the human brain in vivo. This raises immediate possibilities for clinical application but responsible use of this approach requires careful consideration of the scope and limitations of the technique.

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.