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(A, B) Automated segmentation of spinal cord cross-sectional area. (C) Color-coded diffusion tensor imaging map (derived from fractional anisotropy and the principal eigenvector) demonstrates spinal cord fibers running along the rostrocaudal axis (blue). Reproduced with permission from Oh J, Sotirchos ES, Saidha S, et al. Relationships between quantitative spinal cord MRI and retinal layers in multiple sclerosis. Neurology 2015;84:720–728.
