ROC analysis of multiparametric MR perfusion for differentiation of PTA from cervical lymph nodes and thyroid gland
| PTA vs Lymph Node | PTA vs Thyroid Gland | |||||||
|---|---|---|---|---|---|---|---|---|
| AUC | Threshold | Sensitivity | Specificity | AUC | Threshold | Sensitivity | Specificity | |
| Peak enhancement | 0.62 | >340 | 65% | 64% | 0.94 | >270 | 83% | 93% |
| Time-to-peak (seconds) | 0.77 | <49 | 66% | 71% | 0.62 | <37 | 86% | 48% |
| Wash-in | 0.84 | >5.52 | 72% | 89% | 0.87 | >5.27 | 76% | 90% |
| Washout | 0.68 | >0.62 | 76% | 64% | 0.88 | >0.63 | 76% | 86% |