The latest Liver Imaging Reporting And Data System (LI-RADS v2014) incorporates gadoxetic acid-enhanced MRI into the diagnostic algorithm of hepatocellular carcinoma (HCC). In this study, we investigated the effects of ancillary features of gadoxetic acid-enhanced MRI in the determination of LI-RADS categories of HCCs. On gadoxetic acid-enhanced MRI, LI-RADS showed sensitivities of 69.0% and 67.8% in the diagnosis of HCCs (LR-5/5v) in two reviewers, respectively. Ancillary features of HCCs on gadoxetic acid-enhanced MRI including hepatobiliary imaging features frequently resulted in upgrade LR-3 to LR-4.
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