Orthogonal diffusion-weighted MRI measures distinguish region-specific degeneration in cerebellar ataxia subtypes
The cerebellar peduncles are excellent candidates for composite indicators of regional degeneration in posterior fossa structures, as the peduncles show histopathological changes in degenerative ataxia. We postulate that magnetic resonance imaging will reveal evidence of disease specific peduncle degeneration through macrostructural (cross-sectional area) and microstructural (fractional anisotropy, mean diffusivity) measures. This study presents a “proof of principle” using orthogonal diffusion tensor imaging cross-sections of the cerebellar peduncles to distinguish categories of cerebellar disease.
KeywordsFractional Anisotropy Diffusion Tensor Imaging Mean Diffusivity Cerebellar Ataxia White Matter Tract
This work was supported by the Arnold-Chiari Foundation, the Robin Zee Fund, the Dana Foundation Program for Brain and Immuno-Imaging, the National Organization for Rare Disorders, and the following NIH grants: 1K23EY015802, 5T32DC00023, R01EY01849, R01NS056307, and R21NS059830. Special acknowledgements to Andrew S. K. Liu, Katherine K. Loya, and Jennifer L. Cuzzocreo for their invaluable assistance.
Conflict of interest statement
The authors have reported no conflicts of interest.
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