Table 3.
Table depicting diagnostic accuracy of magnetic resonance images in relation to various lung findings
| Parameter | TP | TN | FP | FN | Sensitivity | Specificity | NPV | PPV |
|---|---|---|---|---|---|---|---|---|
| Nodule, overall | 7 | 19 | 2 | 7 | 50% | 90.4% | 73% | 77.7% |
| < 5 mm | 1 | 26 | 0 | 8 | 11.1% | 100% | 76.4% | 100% |
| > 5 mm | 6 | 25 | 2 | 2 | 75% | 92.5% | 92.5% | 75% |
| Halo sign | 2 | 32 | 1 | 0 | 100% | 96.9% | 100% | 66.6% |
| Cavitating nodule | 2 | 32 | 1 | 0 | 100% | 96.9% | 100% | 66.6% |
| consolidation | 9 | 25 | 1 | 0 | 100% | 96% | 100% | 90% |
| Consolidation with breakdown | 2 | 32 | 1 | 0 | 100% | 96.9% | 100% | 66.6% |
| GGOs | 7 | 20 | 6 | 2 | 77.7% | 76.9% | 90.9% | 53.8% |
TP – true positives, TN – true negatives, FP – false positives, FN – false negatives, NPV – negative predictive value, PPV – positive predictive value, GGOs – ground-glass opacities