AJDRAJNR - American Journal of Neuroradiology

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Figure 2


Fig 2. Eigenvalue and anisotropy distributions for the entire spinal cord. A, Primary eigenvalue ({lambda}1) histogram for control group. Bin frequency is shown as gray-scale level across the entire spinal cord (bin size = 1 x 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 ({lambda}2) histogram for control group. Bin frequency is shown as a gray-scale level across the entire spinal cord (bin size = 1 x 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 ({lambda}3) histogram for the control group. Bin frequency is shown as a gray-scale level across the spinal cord (bin size = 1 x 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).





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Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X