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. 2019 May 6;39(3):690–708. doi: 10.1148/rg.2019180158

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2019 by the Radiological Society of North America, Inc.

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Figure 10c. — US-3 positive observation in a 58-year-old man with HCV infection. (a) Longitudinal gray-scale US image shows a 1.4-cm hypoechoic observation (arrow) in the right hepatic lobe, indicating a US-3 positive category, for which multiphase contrast-enhanced diagnostic imaging was recommended. (b, c) Axial T1-weighted fat-suppressed MR images obtained in the arterial (b) and portal venous (c) phases show arterial phase hyperenhancement of the observation (arrow in b) and a washout appearance (arrow in c), findings that are in keeping with a CT/MRI LI-RADS category 5 observation (definitely HCC). (Case courtesy of the ACR.)