Sensitivity, specificity, PPV, and NPV of ITSS degree for differentiating WHO grade II, III, and IV gliomas
| Glioma Grade | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|
| II vs III | 50.0% | 92.9% | 80.0% | 76.5% |
| II vs IV | 100.0% | 100.0% | 100.0% | 100.0% |
| III vs IV | 78.9% | 87.5% | 93.8% | 63.6% |
Note:—PPV indicates positive predictive value; NPV, negative predictive values; ITSS, intratumoral susceptivility signal intensity.