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Table 2: 
Perfusion parameters and ROC analysis for WHO grades III and grade IV
Group (No. of patients)PS (mL/100 g/min) Mean (SD)CBV (mL/100 g) Mean (SD)CBF (mL/100 g/min) Mean (SD)MTT (s) Mean (SD)
WHO grade III (6)1.04 (0.73)1.82 (1.41)38.9 (19.3)4.60 (1.62)
WHO grade IV (18)2.81 (1.28)3.12 (0.97)96.3 (79.8)4.69 (1.32)
P value<.001.039.014.922
C-statistic0.9260.7870.8330.509
  • ROC indicates receiver operating characteristic; PS, permeability surface-area product; CBV, cerebral blood volume; CBF, cerebral blood flow; MIT, mean transit time.