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ROC curve of RTE, TLR, TEI, and RER derived from hepatobiliary phase for predicting HCC with highly aggressive behavior. The AUCs for predicting high aggressive HCC were 0.68 (95% CI: 0.58–0.77) for RTE, 0.83 (95% CI: 0.75–0.90) for TLR, 0.74 (95% CI: 0.64–0.82) for TEI and 0.78 (95% CI: 0.68–0.85) for RER. ROC, receiver operating characteristic; RTE, relative tumor enhancement; TLR, tumor to liver contrast ratio; TEI, tumor enhancement index; RER, relative enhancement ratio.
