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Abstract #4013

Revisiting Arterial Enhancement of Small (1-2 Cm) Hepatic Nodules on Dynamic MRI in Patients at High Risk for Hepatocellular Carcinoma

Chansik An1, Mi-Suk Park1, Woo-Suk Chung1, Yeo-Eun Kim1, Hyung-Jin Rhee1, Myeong-Jin Kim1

1Diagnostic radiology, Yonsei University Health System, Seoul, Korea, Republic of

Arterial enhancement of a hepatic nodule on dynamic magnetic resonance imaging is one of the major diagnostic criteria for hepatocellular carcinoma. In general, arterial enhancement has been accepted as showing "hyperintensity compared to the surrounding liver parenchyma on arterial phase. In this study, however, we showed that arterial enhancement should be determined by comparing pre-contrast and arterial phase images rather than assessing arterial phase alone, and that subtraction imaging can play a critical role in determining arterial enhancement because it can more accurately demonstrate arterial enhancement than visual comparison of the two phases.

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Keywords

abdominal accuracy accurate accurately addition additional agreement agreements alone approved arterial assessing association automatically better board carcinoma clinical comparing conference confirmed consent contrast correction criteria curative daily days decrease decreased defined definition determine determined development diagnosis diagnostic dynamic eight enables encounter enhanced enhancement evaluate evaluating evaluation excellent false health hepatic highest improve improved independently informed institutional intensity journal kappa lesion liver mainly major malignant management medical negative nodule nodules often park patients performance positive practice radiologists radiology registration republic resection retrospective review reviewed reviewers revisit revisiting risk sensitivity series significance solutions specificity statistical statistics subtraction surgically surrounding suspected system table technical thirty together transplantation trio underwent update visual visually waived