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

Variable1.5T3T
ROC curve
    AUC0.9250.965
    Optimal Jacobian threshold−0.035−0.182
    Sensitivitya (%)85.192.1
    Specificitya (%)86.791.3
    FPRa (per section)0.2080.227
    FPRa (per scan)25.127.5
Detecteda ΔMBT VCR (%)
    Averageb7.1 × 101 ± 2.8 × 1017.7 × 101 ± 1.7 × 101
    Median7.9 × 1017.5 × 101
    Range7.8 × 10−1–1.0 × 1024.2–1.0 × 102
Misseda ΔMBT VCR (%)
    Averageb6.2 × 101 ± 3.8 × 1017.3 × 101 ± 1.9 × 101
    Median7.5 × 1018.2 × 102
    Range3.9–1.0 × 1024.3 × 101–8.6 × 101

  • ↵a At the optimal Jacobian threshold.

  • ↵b Average ± SD.