Table 2. Sensitivity, specificity, and area under the receiver operating characteristic curve of the best apparent diffusion coefficient cutoff values in the differentiation of small cell lung cancer and non-small cell lung cancer metastases.
| ADC parameter | Cutoff | Sensitivity (%) | Specificity (%) | AUC |
|---|---|---|---|---|
| ADCmin | 0.56 ×10−3 mm2/s | 80.6 | 73.8 | 0.812 |
| ADCmean | 0.82 ×10−3 mm2/s | 91.7 | 61.5 | 0.825 |
| nADC | 1.085 | 80.6 | 73.8 | 0.845 |
| ADCedema | 1.21 ×10−3 mm2/s | 75.0 | 67.7 | 0.698 |
ADC: apparent diffusion coefficient; AUC: area under the receiver operating characteristic curve.