Table 3 Results of unenhanced radiomics model and triphasic radiomics model predictive ability for distinguishing between iMAD and LPA
Model | AUC (95% CI) | Sensitivity (%) | Specificity (%) | Accuracy (%) | Cut-off | |
|---|---|---|---|---|---|---|
Unenhanced radiomics model | Training cohort | 0.916 (0.826–0.968) | 88.6 | 91.9 | 90.3 |  > 0.513 |
Testing cohort | 0.860 (0.704–0.953) | 78.6 | 72.7 | 72.2 | ||
External validation cohort | 0.838 (0.687–0.935) | 75.0 | 80.0 | 77.5 | ||
Triphasic radiomics model | Training cohort | 0.964 (0.892–0.994) | 91.4 | 91.9 | 93.1 |  > 0.483 |
Testing cohort | 0.880 (0.728–0.964) | 78.6 | 86.3 | 80.6 | ||
External validation cohort | 0.843 (0.693–0.938) | 80.0 | 80.0 | 77.5 | ||