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Table 5: 
Mean MTT in each region and stage of leptomeningeal anastomosis
LMAr
1 (n = 4)2 (n = 8)3 (n = 8)4 (n = 20)
Medial frontal15.4 ± 5.813.0 ± 5.612.5 ± 5.312.8 ± 4.1−.05
Posterior frontal16.2 ± 10.015.1 ± 6.511.3 ± 4.413.0 ± 4.9−.10
Occipital15.3 ± 8.914.9 ± 5.210.7 ± 2.111.3 ± 2.9−.22
Basal ganglia13.7 ± 7.411.6 ± 3.49.5 ± 2.810.5 ± 3.3−.16
  • Note.— MTT indicates mean transit time; LMA, leptomeningeal anastomosis.
    *, P < .05; †, P < .01, ‡, P < .001; based on Spearman rank correlation test.