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Table 2: 
Sensitivity, specificity, PPV, and NPV of rCBVmax for differentiating WHO grade II, III, and IV gliomas
Glioma GradeSensitivitySpecificityPPVNPV
II vs III87.5%71.4%63.6%90.9%
II vs IV100.0%85.7%90.5%100.0%
III vs IV89.5%75.0%89.5%75.0%
  • Note:—rCBVmax indicates maximum relative celebral blood value.