Table 4 Diagnostic Value of CT Indicators for CD
Contrast-enhanced CT features | Sensitivity | Specificity | PPV | NPV | Youden Index |
|---|---|---|---|---|---|
vessel(s) entering nodule (1) | 75% | 74% | 55% | 84% | 0.49 |
Dilated and tortuous vessels in the periphery of nodule (2) | 67% | 79% | 61% | 92% | 0.46 |
(1) + (2) | 78% | 93% | 79% | 91% | 0.71 |
Degree of enhancement (3) | 85% | 78% | 53% | 93% | 0.63 |
(1) + (2) + (3) | 89% | 94% | 89% | 94% | 0.83 |