Table 5 ROC curve analyses of the significant histogram parameters for differentiating malignant from benign parotid tumors except Warthin tumors
Parameters | Malignant tumors | Benign tumors except Warthin’s tumor | P value | AUC (95% CI) | Cut off value | Sensitivity Specificity |
|---|---|---|---|---|---|---|
10th TTP (s) | 62.341 ± 29.120 | 94.511 ± 41.233 | < 0.001 | 0.847 (0.753–0.915) | < 84.92 | 90.62% 69.09% |
Mean MRE (%) | 111.021 ± 34.352 | 127.501 ± 28.645 | 0.040 | 0.628 (0.518–0.730) | < 116.83 | 86.25% 65.45% |
Skewness MRE | 1.697 ± 1.799 | 0.382 ± 0.853 | 0.005 | 0.777 (0.675–0.859) | ≥ 1.00 | 71.87% 76.36% |
TTP + Skewness MRE | 0.885 (0.798–0.943) | 90.62% 74.55% |