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Table 3: 
Mean MTT in each region and PCA stage
PCA Stager
1 (n = 32)2 (n = 1)3 (n = 5)4 (n = 2)
Medial frontal11.9 ± 4.516.416.7 ± 2.620.2 ± 2.2.56‡
Posterior frontal11.5 ± 4.323.119.0 ± 4.624.6 ± 2.0.60‡
Occipital10.7 ± 2.814.518.0 ± 3.122.6 ± 0.2.64‡
Basal ganglia9.8 ± 3.214.413.1 ± 2.419.6 ± 1.0.53‡
  • Note.— MTT indicates mean transit time; PCA, posterior cerebral artery.
  • * , P < .05;
  • † , P < .01;
  • ‡ , P < 0.001; based on Spearman rank correlation test.