Diffusion tensor imaging

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Diffusion Tensor Imaging

Diffusion tensor imaging (pronunciation: di-fyu-zhun ten-ser im-uh-jing) is a type of MRI technique that enables the measurement of the restricted diffusion of water in tissue in order to produce neural tract images.

Etymology

The term "Diffusion tensor imaging" is derived from its function. "Diffusion" refers to the movement of molecules from an area of high concentration to an area of low concentration. "Tensor" is a mathematical term used to describe a particular type of geometric concept. In the context of DTI, it refers to the mathematical model used to describe the 3D diffusion of water in tissue. "Imaging" refers to the creation of pictures from the data collected by the MRI scanner.

Procedure

In Diffusion tensor imaging, the diffusion of water molecules is measured in multiple directions. The data is then used to create a three-dimensional model of the diffusion. This model can be used to determine the orientation of fibers within the brain, as well as to identify any abnormalities in the diffusion, which may indicate disease or injury.

Applications

Diffusion tensor imaging is primarily used in brain imaging. It can help to visualize and assess the integrity of white matter tracts in the brain. This can be particularly useful in diagnosing conditions such as multiple sclerosis, stroke, and Alzheimer's disease. It is also used in research to study brain connectivity and development.

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