Liver Imaging Reporting and Data System (LI-RADS) Version 2018: Imaging of Hepatocellular Carcinoma in At-Risk Patients
Abstract
By updating the criteria for small (size range, 10–19 mm) LR-5 observations and simplifying the definition for threshold growth, Liver Imaging Reporting and Data System (LI-RADS) version 2018 achieved consistency with and integration into the American Association for the Study of Liver Diseases 2018 hepatocellular carcinoma (HCC) clinical practice guidance, a major milestone toward establishing a universal approach to the imaging diagnosis of HCC.
The Liver Imaging Reporting and Data System (LI-RADS) is composed of four individual algorithms intended to standardize the lexicon, as well as reporting and care, in patients with or at risk for hepatocellular carcinoma in the context of surveillance with US; diagnosis with CT, MRI, or contrast material–enhanced US; and assessment of treatment response with CT or MRI. This report provides a broad overview of LI-RADS, including its historic development, relationship to other imaging guidelines, composition, aims, and future directions. In addition, readers will understand the motivation for and key components of the 2018 update.
© RSNA, 2018
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Article History
Received: June 22 2018Revision requested: July 16 2018
Revision received: July 22 2018
Accepted: July 30 2018
Published online: Sept 25 2018
Published in print: Dec 2018