Table 4. Meta-regression analysis for each parameter.
| Parameter | Diagnostic indicators | DECT brand | Blood supply | Contrast flow rate | Study design |
|---|---|---|---|---|---|
| IC in AP | Sensitivity | − | − | + | − |
| Specificity | − | − | − | − | |
| NIC in AP | Sensitivity | − | − | − | + |
| Specificity | − | − | − | − | |
| Slope in AP | Sensitivity | − | − | − | + |
| Specificity | − | − | − | − | |
| IC in VP | Sensitivity | − | + | − | − |
| Specificity | + | + | + | − | |
| NIC in VP | Sensitivity | − | − | − | + |
| Specificity | − | − | − | − | |
| Slope in VP | Sensitivity | − | − | − | + |
| Specificity | − | − | − | − | |
| IC in AP + NIC in AP | Sensitivity | + | − | − | − |
| Specificity | − | − | − | − | |
| NIC in AP + slope in AP | Sensitivity | − | − | − | + |
| Specificity | − | − | − | − | |
| NIC in AP + NIC in VP | Sensitivity | − | + | − | + |
| Specificity | − | − | − | − | |
| NIC in AP + slope in VP | Sensitivity | − | − | − | + |
| Specificity | − | − | − | − | |
| Slope in AP + NIC in VP | Sensitivity | − | − | − | + |
| Specificity | − | − | − | − | |
| Slope in AP + slope in VP | Sensitivity | + | − | − | + |
| Specificity | − | − | − | − | |
| IC in VP + NIC in VP | Sensitivity | − | − | − | − |
| Specificity | + | + | + | − | |
| Slope in VP + slope in VP | Sensitivity | − | − | + | − |
| Specificity | − | − | − | − | |
| NIC in VP + slope in VP | Sensitivity | − | − | − | + |
| Specificity | − | − | − | + |
“+”: significant effect on the heterogeneity; “−”: nonsignificant effect on the heterogeneity. IC, iodine concentration; AP, arterial phase; NIC, normalized iodine concentration; VP, venous phase; DECT, dual-energy computed tomography.