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. 2008 Aug;29(7):1279–1284. doi: 10.3174/ajnr.A1064

Fig 2.

Fig 2.

Eigenvalue and anisotropy distributions for the entire spinal cord. A, Primary eigenvalue (λ1) histogram for control group. Bin frequency is shown as gray-scale level across the entire spinal cord (bin size = 1 × 10−5 mm2/s). Superimposed on the gray-scale histogram is the group mean and SD (solid black line and error bars). B, Secondary eigenvalue (λ2) histogram for control group. Bin frequency is shown as a gray-scale level across the entire spinal cord (bin size = 1 × 10−5 mm2/s). Superimposed on the gray-scale histogram is the group mean and SD (solid black line and error bars). C, Tertiary eigenvalue (λ3) histogram for the control group. Bin frequency is shown as a gray-scale level across the spinal cord (bin size = 1 × 10−5 mm2/s). Superimposed on the gray-scale histogram is the group mean and SD (solid black line and error bars). D, Fractional anisotropy histogram for control group. Bin frequency is shown as a gray-scale level across the spinal cord (bin size = 0.01). Superimposed on the gray-scale histogram is the group mean and SD (solid black line and error bars).