Article Figures & Data
Figures
- Fig 1.
A, Seed regions of interest were placed on the precentral knob (blue) for the hand and on the mediodorsal part (leg somatotopy) of the primary motor cortex for the leg (red). The target region of interest was placed on the known CST area of the pontomedullary junction. B, CSTs were constructed in both hemispheres (blue, hand; red, leg). The probability threshold is the point at which the corticopontocerebellar fiber disappears. C, Landmarks for measurement of the location of the CST (white line, midline of the interpeduncular fossa; white-lined rectangle, the boundary of the cerebral peduncle of the midbrain; a-a' double-headed arrow [red], mediolateral direction; b-b' double-headed arrow [green], anteroposterior direction). D, The location of the CST is shown at the upper and lower midbrain.
Tables
Results of DTI parameters for the CST and average locations of the highest probability point of the CST at the CP of the midbraina
Right Left Total Hand Leg Hand Leg Hand Leg FA 0.52 (±0.03) 0.53 (±0.12) 0.53 (±0.05) 0.52 (±0.1) 0.53 (±0.04) 0.53 (±0.11) MD 0.91 (±0.14) 0.89 (±0.18) 0.87 (±0.13) 0.88 (±0.12) 0.89 (±0.14) 0.89 (±0.15) Tract volume 693.56 (±419.98) 494.86 (±298.43) 618.3 (±372.14) 567.7 (±284.4) 655.93 (±396.25) 531.28 (±292.09) Upper midbrain level Mediolateral 59.41 (±9.6) 70.77 (±7.84) 61.39 (±9.8) 69.20 (±7.78) 60.46 (±9.69) 69.98 (±7.8) Anteroposterior 27.94 (±10.57) 32.19 (±13.34) 28.59 (±9.72) 31.86 (±9.53) 28.26 (±10.1) 32.03 (±11.52) Lower midbrain level Mediolateral 53.45 (±9.38) 62.51 (±14.84) 53.42 (±10.61) 63 (±10.32) 53.44 (±9.96) 62.76 (±12.73) Anteroposterior 28.23 (±8.37) 31.51 (±10.28) 32.15 (±11) 35.68 (±10.85) 30.19 (±9.91) 33.59 (±10.72) -
↵a Values represent mean (±SD), MD × 10−3(mm2/s), and location (%).
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