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. Author manuscript; available in PMC: 2010 May 3.
Published in final edited form as: Magn Reson Med. 2010 May;63(5):1323–1335. doi: 10.1002/mrm.22389

Table 2.

The relative change of diffusion contrasts between lesions at 3 days, 30 days, and uninjured contralateral white matter.

Contrast Lesion at 3 Days Lesion at 30 Days Lesion at 30 Days
Vs. Uninjured WM Vs. Uninjured WM vs. Lesion at 3 Days
Change (%) p-value Change (%) p-value Change (%) p-value

FA −16 ± 5 * < 0.0001 −39 ± 8 * < 0.0001 −31 ± 10 * < 0.0001
D 30 ± 21 * 0.005 89 ± 26 * < 0.0001 66 ± 23 * < 0.0001
D −34 ± 9 * < 0.0001 −33 ± 21 * 0.002 −5 ± 16 0.4
MD −22 ± 8 * < 0.0001 −5 ± 18 0.5 17 ± 15 0.02
FWHM 10 ± 8 * 0.009 17 ± 9 * 0.001 7 ± 8 0.05
RMSD 14 ± 9 * 0.002 45 ± 13 * < 0.0001 35 ± 12 * < 0.0001
PZERO −13 ± 7 * 0.001 −25 ± 10 * < 0.0001 −17 ± 8 * 0.0004
KE −18 ± 9 * 0.0007 −30 ± 20 * 0.004 −13 ± 10 * 0.0091
FWHM −32 ± 13 * < 0.0001 −41 ± 29 * 0.004 −24 ± 14 * 0.002
RMSD −18 ± 6 * < 0.0001 −15 ± 9 * 0.003 0 ± 10 0.9
PZERO 35 ± 13 * < 0.0001 41 ± 23 * 0.001 16 ± 14 0.02
KE 106 ± 45 * < 0.0001 103 ± 69 * 0.001 24 ± 31 0.08
KE −8 ± 8 0.03 −17 ± 16 0.02 −6 ± 10 0.2

Positive (negative) values denote an increase (decrease) in the diffusion measure relative to the uninjured contralateral WM (columns 1 and 2) or relative to the lesion 3 days after axotomy (column 3).

*

denotes significant difference (p < 0.01) for the ROI analysis presented in Figures 2B, 3B and 4B.