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Code
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Display
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Definition
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113288
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Volume Ratio |
Coefficient reflecting the anisotropy of the tissues, derived from a diffusion weighted MR image. It represents the volume of an ellipsoid whose semimajor axes are the three eigenvalues of the diffusion tensor divided by the volume of a sphere whose radius is the mean diffusivity. |
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110809
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Relative Anisotropy |
Coefficient reflecting the relative anisotropy of the tissues, derived from a diffusion weighted MR image. |
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110808
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Fractional Anisotropy |
Coefficient reflecting the fractional anisotropy of the tissues, derived from a diffusion weighted MR image. Fractional anisotropy is proportional to the square root of the variance of the Eigen values divided by the square root of the sum of the squares of the Eigen values. |