What is diffusion tensor imaging?

What is diffusion tensor imaging?

Diffusion Tensor Imaging (DTI) is a technique that detects how water travels along the white matter tracts in the brain (Fig. 2). White-matter tracts connect different parts of the brain and must be protected during surgery.

What is diffusion tensor imaging for dummies?

Diffusion tensor imaging (DTI) is an advanced magnetic resonance imaging (MRI) technique that provides detailed information about tissue microstructure such as fiber orientation, axonal density, and degree of myelination. DTI is based on the measurement of the diffusion of water molecules.

Why is diffusion tensor imaging important?

As DTI provides additional information regarding the brain anatomy over conventional MRI, it is regarded as a more sensitive tool to investigate normal brain development as well as congenital brain development disorders.

What is the purpose of 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.

Who invented DTI?

Peter Basser
The diffusion tensor was originally proposed for use in magnetic resonance imaging (MRI) by Peter Basser in 1994 [5, 6].

What is a DTI study?

Diffusion tensor imaging (DTI) allows a live look into the microstructure of white matter in the brain and is an important complement to volumetric studies of specific structures such as the amygdala.

How is DTI 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.

What is diffusion tractography?

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.

Who developed diffusion tensor imaging?

What is tensor in DTI?

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 are the types of measurements used in diffusion tensor imaging DTI )?

4.1. 2 Measures of diffusion anisotropy

• The fractional anisotropy, or FA [44], is the most widely used anisotropy measure.
• Three intuitive measures are CL, CP, and CS: the linear, planar, and spherical shape measures [37, 45].