Table 4.
Diagnostic performances of SWE for metastatic sCLNs in NPC patients.
| EI |
Cutoff values (kPa) |
Sensitivity (%) |
Specificity (%) |
PPV (%) |
NPV (%) |
Accuracy (%) |
|---|---|---|---|---|---|---|
| Emax | 27 | 77.8 | 71.0 | 43.8 | 91.6 | 72.5 |
| Emean | 17 | 100 | 61.3 | 42.9 | 100 | 70.0 |
SWE, Shear wave elastography; sCLNs, Small cervical lymph nodes; NPC, Nasopharyngeal carcinoma; EI, Elasticity indices; Emean, Mean elasticity values; Emin, Minimum elasticity values; Emax, Maximum elasticity values; PPV, Positive predictive values; NPV, Negative predictive values.