Table 2:
Summary of ROC analysis, for detecting all 1.5T and 3T ΔMBTs and 1.5T ΔMBTts only, and the VCR of detected and missed ΔMBTs
| Variable | 1.5T | 3T |
|---|---|---|
| ROC curve | ||
| AUC | 0.925 | 0.965 |
| Optimal Jacobian threshold | −0.035 | −0.182 |
| Sensitivitya (%) | 85.1 | 92.1 |
| Specificitya (%) | 86.7 | 91.3 |
| FPRa (per section) | 0.208 | 0.227 |
| FPRa (per scan) | 25.1 | 27.5 |
| Detecteda ΔMBT VCR (%) | ||
| Averageb | 7.1 × 101 ± 2.8 × 101 | 7.7 × 101 ± 1.7 × 101 |
| Median | 7.9 × 101 | 7.5 × 101 |
| Range | 7.8 × 10−1–1.0 × 102 | 4.2–1.0 × 102 |
| Misseda ΔMBT VCR (%) | ||
| Averageb | 6.2 × 101 ± 3.8 × 101 | 7.3 × 101 ± 1.9 × 101 |
| Median | 7.5 × 101 | 8.2 × 102 |
| Range | 3.9–1.0 × 102 | 4.3 × 101–8.6 × 101 |
a
At the optimal Jacobian threshold.
b
Average ± SD.