Table 2 Comparative analytic performance of quantitative MRI parameters
P-value | AUC | Cutoff | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|---|
T2WI based L-to-SC SI ratio | ||||||
< 0.001* | 0.860 | > 1# | 96.4% | 80.0% | 90% | 92.3% |
b500-DWI based L-to-SC SI ratio | ||||||
< 0.001* | 0.863 | > 0.7# | 71.4% | 86.7% | 90.9% | 61.9% |
Mean ADC value in 10−3mm2/s | ||||||
< 0.01* | 0.77 | ≤ 1.2# | 71.4% | 83.3% | 84% | 70.5% |
Minimum ADC value in 10−3mm2/s | ||||||
< 0.001* | 0.77 | ≤ 0.9# | 85.7% | 66.7% | 75.9% | 79.2% |