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TABLE 2: 
Mean values (± SD) for absolute and relative fractional anisotropy and coefficient Dav in the three groups of lesions of increasing hypointensity on the T1-weighted images
FADav (×10−3 mm2/s)ΔFA
T1 isointense (n = 25)0.26 ± 0.071.29 ± 0.1719 ± 4
T1 mildly hypointense (n=26)0.21 ± 0.061.54 ± 0.3123 ± 6
T1 severely hypointense (n=25)0.19 ± 0.061.80 ± 0.3236 ± 4
  • Note.—FA indicates fractional anisotropy; Dav, averaged diffusivity; ΔFA, percentage FA variation in the lesion, obtained in relation to a symmetric normal appearing white matter area in the contralateral hemisphere.