Table 5.
The cut-off values and diagnostic efficacy of SUVmax metrics and SUV ratio for differential diagnosis malignant and benign lesions.
| Cut-off value | Sn (%) | Sp (%) | PPV (%) | NPV (%) | Accuracy (%) | AUC | |
|---|---|---|---|---|---|---|---|
| SUVmax early | 3.5 | 83.3 | 93.0 | 96.9 | 67.8 | 86.0 | 0.904 |
| SUVmax delay | 3.7 | 86.0 | 86.0 | 94.2 | 69.8 | 86.0 | 0.903 |
| △SUVmax | 0.7 | 74.6 | 86.0 | 93.4 | 56.1 | 77.8 | 0.829 |
| RI(%) | 15.6 | 71.9 | 74.1 | 88.2 | 50.0 | 72.6 | 0.759 |
| SUV ratio early | 8.0 | 85.1 | 88.4 | 95.1 | 69.1 | 86.0 | 0.903 |
| SUV ratio delay | 7.0 | 94.7 | 74.4 | 90.8 | 84.2 | 89.2 | 0.902 |
| Ratio(SUV ratio delay/early) | 1.1 | 86.0 | 83.7 | 93.3 | 69.2 | 85.3 | 0.818 |
Values presented as mean ± SD or number (%); Sn = Sensitivity; Sp = Specificity; PPV = Positive predictive value; NPV = Negative predictive value; AUC = Area under curve.