Table 3. Predictive performance of quantitative parameters.

Parameter	AUC (95% CI)	Optimal cutoff value	Sensitivity (95% CI)	Specificity (95% CI)
RTE	0.68 (0.58–0.77)	≤0.31	64.4% (52.3–75.3%)	70.0% (50.6–85.3%)
TLR	0.83 (0.75–0.90)	≤0.61	89.0% (79.5–95.1%)	63.3% (43.9–80.1%)
TEI	0.74 (0.64–0.82)	≤0.76	78.1% (66.9–86.9%)	63.3% (43.9–80.1%)
RER	0.78 (0.68–0.85)	≤0.33	79.5% (68.4–88.0%)	63.3% (43.9–80.1%)

AUC, area under the ROC curve; RTE, relative tumor enhancement; TLR, tumor to liver contrast ratio; TEI, tumor enhancement index; RER, relative enhancement ratio; CI, confidence interval.