Liver Reporting & Data System

LIRADS_320LI-RADS® was created to standardize the reporting and data collection of CT and MR imaging for hepatocellular carcinoma (HCC).

This method of categorizing liver findings for patients with risk factors for developing HCC allows the radiology community to:

  • Apply consistent terminology
  • Reduce imaging interpretation variability and errors
  • Enhance communication with referring clinicians
  • Facilitate quality assurance and research

License Information
Creative Commons License
Liver Imaging Reporting and Data System (LI-RADS) by American College of Radiology is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Permissions beyond the scope of this license may be available here.

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LI-RADS Current Releases


CEUS LI-RADS is a standardized system for technique, interpretation, reporting, and data collection for contrast-enhanced ultrasound exams in patients at risk for developing HCC.
Access CEUS LI-RADS v2017


The LI-RADS Committee has approved an updated CT/MRI diagnostic algorithm, a new treatment response assessment algorithm, basic management guidance, basic reporting guidance, key definitions, core supporting material, and FAQ.
Access CT/MRI LI-RADS v2017

Ultrasound LI-RADS® v2017

The Ultrasound LI-RADS v2017 covers everything needed to apply US LI-RADS® Screening and Surveillance algorithm.
Access Ultrasound LI-RADS v2017

LI-RADS Translations

The LI-RADS translations are now available in nine languages. These translations have been vetted by members of the LI-RADS International Working Group, who speak these languages. The LI-RADS International Working Group is Chaired by Dr. An Tang.

Translations are available for download.

Archived Releases

Future Releases

The ACR has announced the formation of a new working group:

Treatment Response (TR) LI-RADS Workgroup — Chaired by Dr. Richard K. Do, from Memorial Sloan Kettering Cancer Center

In collaboration with the LI-RADS Steering Committee, the LI-RADS TR WG will develop and refine a standardized system for the interpretation, reporting and data collection for treatment response assessment in patients who undergo liver-directed treatments for known or suspected HCC. The system will be called ACR TR LI-RADS, or TR LI-RADS for short. It will include a lexicon of controlled terminology, an illustrative atlas, reporting guidelines, and educational material. It will be updated as experience accrues, as knowledge add technology advance, and in response to user feedback.

Initial release is anticipated in 2017.

LI-RADS Work Groups

Atlas & Lexicon Workgroup
Chair: Cynthia Santillan, MD
, UC San Diego
Associate Clinical Professor of Radiology and Vice Chief of the Body Imaging Section, Chief of Body Computed Tomography

Reporting Workgroup
Chair: Mustafa Bashir, MD
, Duke Radiology
Associate Professor of Radiology; Director, MRI; Director, Center for Advanced Magnetic Resonance Imaging 

Technology & Applications Workgroup
Chair: Marc Kohli, MD
, UC San Francisco 
Director of Clinical Informatics and Associate Professor of Clinical Radiology in Abdominal Imaging

Ultrasound Workgroup
Chair: Aya Kamaya, MD
, Stanford University School of Medicine
Associate Professor of Radiology (Body Imaging) 

Contrast Enhanced Ultrasound (CEUS) Workgroup
Chair: Yuko Kono, MD
, UC San Diego Health
Gastroenterologist and Hepatologist
, Associate Professor of Medicine 

Evidence Workgroup
Chair: An Tang, MD
, University of Montreal 
Associate Professor in the Department of Radiology 

Treatment Response Workgroup
Chair: Richard Do, MD
, Memorial Sloan Kettering Cancer Center 
Department of Radiology Co-Chair for Hepatopancreatobiliary Disease Management Team

Management Workgroup
Chair: Donald Mitchell, MD, Thomas Jefferson University
Professor and Director, Magnetic Resonance Imaging

Hepatobiliary Agents (HBA) Workgroup
Co-Chair: Jay Heiken, MD
, Washington University School of Medicine in St. Louis 
Professor, Radiology
, Division of Diagnostic Radiology 

Co-Chair: Kathryn Fowler, MD, Washington University School of Medicine in St. Louis 
Assistant Professor, Radiology
, Division of Diagnostic Radiology Abdominal Imaging Section; Director of Abdominal and Pelvic MRI; Medical Director Center for Clinical Imaging Research; Co-Director Body MRI Fellowship

Outreach & Education Workgroup
Chair: Thomas Hope, MD
, UCSF School of Medicine 
Assistant Professor in Abdominal Imaging and Nuclear Medicine

Technique Workgroup
Chair: Avinash Kambadakone, MD, Massachusetts General Hospital
Assistant Professor, Harvard Medical School
; Medical Director, Martha's Vineyard Hospital Imaging 

Radiologic Pathology Workgroup
Chair: Alex Kagen, MD, Mount Sinai, Beth Israel, The Mount Sinai Hospital, Mount Sinai St. Luke's, and Mount Sinai West
Site Chair, Department of Radiology, Associate Professor Radiology