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Table 1 Results of diffusion tensor imaging parameters and incidence of the pyramidal tract and aberrant pyramidal tract.

From: Characteristics of the aberrant pyramidal tract in comparison with the pyramidal tract in the human brain

   Right Left Total
Pyramidal
tract
Fractional anisotropy 0.58 (± 0.02) 0.59 (± 0.02) 0.59 (± 0.02)
  Mean diffusivity 0.82 (± 0.03) 0.82 (± 0.04) 0.82 (± 0.04)
  Tract volume 580.72 (± 188.13) 605.1 (± 209.99) 592.91 (± 199.19)
  Incidence 93 (100%) 93 (100%) 186 (100%)
Aberrant
Pyramidal
tract
Fractional
anisotropy
0.53 (± 0.02) 0.54 (± 0.03) 0.53 (± 0.02)
  Mean diffusivity 0.81 (± 0.03) 0.80 (± 0.02) 0.81 (± 0.03)
  Tract volume 189.25 (± 136.64) 195.07 (± 135.44) 191.65 (± 134.10)
  Incidence 20 (21.5%) 14 (15.0%) 34 (18.3%)
  1. Values indicate mean (± standard deviation). Mean diffusivity × 10-3(mm2/s).
  2. Incidence (percent).