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Diffusion tensors and fractional anisotropy (FA) maps were then calculated from these pre-processed data.
Using DTI, the researchers measured the uniformity of water flow (called fractional anisotropy or FA) throughout the brain, pinpointing areas with low FA, which are indicative of axonal injury, and areas with abnormally high FA, as compared to healthy brains.
DTI allows researchers to measure the uniformity of water movement (called fractional anisotropy or FA) throughout the brain.
fractional anisotropy (FA) and mean diffusivity (MD).
Fractional anisotropy (FA) is a measure derived from the diffusion tensor imaging that assesses the degree of anisotropic self-diffusion, i.
These commonly include fractional anisotropy (FA) and mean diffusivity (MD).
With DW-MRI, lower apparent diffusion coefficient (ADC) values in gray matter and higher fractional anisotropy (FA) values in white matter, compared with controls, are thought to reflect preservation of brain integrity.
ABSTRACT Background: The apparent diffusion coefficient (ADC) values and the fractional anisotropy (FA) values calculated from diffusion tensor imaging (DTI) in the acute stage of diffuse axonal injury (DAI) are mainly used for prediction of prognosis.