Table 4.
Receiver operating characteristic curves of MRI findings to predict pulmonary artery sarcoma
| MRI findings | Sensitivity (%) | Specificity (%) | Youden index J | AUC | 95% CI | P |
|---|---|---|---|---|---|---|
| MPA involvement | 66.7 | 100 | 0.67 | 0.83±0.13 | 0.50–0.98 | 0.011* |
| Distribution | 33.3 | 80 | 0.13 | 0.57±0.18 | 0.25–0.85 | 0.711 |
| Dilated filling defect | 66.7 | 80 | 0.47 | 0.67±0.17 | 0.33–0.91 | 0.337 |
| Irregular proximal margin | 50 | 80 | 0.30 | 0.65±0.17 | 0.32–0.90 | 0.385 |
| Grape-like appearance of the distal PA | 50 | 100 | 0.50 | 0.75±0.15 | 0.41–0.95 | 0.104 |
| Wall eclipsing sign | 83.3 | 60 | 0.43 | 0.72±0.17 | 0.38–0.94 | 0.193 |
| Cardiac invasion | 33.3 | 100 | 0.33 | 0.67±0.17 | 0.33–0.91 | 0.323 |
| Pericardial effusion | 50 | 60 | 0.10 | 0.55±0.18 | 0.24–0.84 | 0.783 |
| Pleural effusion | 83.3 | 80 | 0.63 | 0.82±0.14 | 0.48–0.97 | 0.025* |
| T1WI intensity | 83.3 | 40 | 0.23 | 0.62±0.18 | 0.29–0.88 | 0.515 |
| T2WI intensity | 66.7 | 60 | 0.27 | 0.60±0.18 | 0.28–0.87 | 0.585 |
| Fat-suppressed T2WI intensity | 88.3 | 80 | 0.63 | 0.82±0.14 | 0.48–0.98 | 0.025* |
| DWI | 100 | 80 | 0.80 | 0.88±0.12 | 0.56–0.99 | 0.002* |
| Enhancement | 83.3 | 100 | 0.83 | 0.92±0.10 | 0.59–0.99 | <0.001* |
AUC, area under the receiver curve; 95% CI, 95% confidence interval; MPA, main pulmonary artery; PA, pulmonary artery; T1WI, T1-weighted imaging; T2WI, T2-weighted imaging.
*
P < 0.05.