Anisotropy (Template:IPA-en) is the property of being directionally dependent, as opposed to isotropy, which implies homogeneity in all directions. It can be defined as a difference, when measured along different axes, in a material's physical property (absorbance, refractive index, density, etc.) An example of anisotropy is the light coming through a polarizing lens.

Diffusion MRIEdit

Relative anistrophy is the ratio of anistropic to isotopic diffusion.

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