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Table 2: Summary of ROC analysis, for detecting all 1.5T and 3T ΔMBTs and 1.5T ΔMBT_ts 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
    Sensitivity^{^a} (%) 85.1 92.1
    Specificity^{^a} (%) 86.7 91.3
    FPR^{^a} (per section) 0.208 0.227
    FPR^{^a} (per scan) 25.1 27.5
Detected^{^a} ΔMBT VCR (%) 
    Average^{^b} 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
Missed^{^a} ΔMBT VCR (%) 
    Average^{^b} 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.

Variable	1.5T	3T
ROC curve
AUC	0.925	0.965
Optimal Jacobian threshold	−0.035	−0.182
Sensitivity^{^a} (%)	85.1	92.1
Specificity^{^a} (%)	86.7	91.3
FPR^{^a} (per section)	0.208	0.227
FPR^{^a} (per scan)	25.1	27.5
Detected^{^a} ΔMBT VCR (%)
Average^{^b}	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
Missed^{^a} ΔMBT VCR (%)
Average^{^b}	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