O-RADS MRI: A Primer for Lesion Characterization

The O-RADS MRI education subcommittee has produced an enduring educational activity with aims to help learners recognize how to use the O-RADS MRI risk stratification system for adnexal lesion characterization in clinical practice. The activity has 6 different modules covering topics such as: the MRI Lexicon/Atlas, Risk Score Stratification, MRI Techniques, Diagnostic Pearls and Pitfalls, Reporting and Teaching Cases. At the end of some modules, you will be able to assess what you have learned in the provided knowledge checks and there is an opportunity to receive CME credits. In addition to the six e-learning modules, you will be able to access additional resources to O-RADS MRI, such as a dictation template and guide to using the O-RADS MRI calculator. 

Learning Objectives


  1. Describe how to accurately characterize both solid components and fluid on MRI using T1-weighted with and without contrast, T2-weighted and diffusion-weighted imaging sequences.
  2. Develop an algorithmic approach to analyzing adnexal lesions on MRI based on their imaging appearance.
  3. Recognize how to use the O-RADS MRI risk stratification system for adnexal lesion characterization in clinical practice

Instructions for Claiming Continuing Medical Education (CME) Credit

Instructions to Receive Credit

In order to successfully complete the activity, participants must engage in the learning activity, complete the post-test with a passing score of 80% or higher, a maximum of 3 attempts will be allowed. Upon successful completion of the post-test, participants must complete an activity evaluation and claim credit commensurate with their participation in the activity.

Disclosure of Relevant Financial Relationships

The ACR Disclosure Policy: The American College of Radiology (ACR) adheres to the policies and guidelines, including the Standards for Integrity and Independence in Accredited CE, set forth to providers by the Accreditation Council for Continuing Medical Education (ACCME), stating those activities where continuing education credits are awarded must be balanced, independent, objective, and scientifically rigorous. All persons in a position to control the content of an accredited continuing education program provided by ACR are required to disclose all financial relationships with any ineligible company within the past 24 months. All financial relationships reported are identified as relevant and mitigated by ACR in accordance with the Standards for Integrity and Independence in Accredited CE in advance of delivery of the activity to learners. The content of this activity was vetted by ACR to assure objectivity and that the activity is free of commercial bias. All relevant financial relationships have been mitigated by ACR.

The following planners and managers have no relevant financial relationships to disclose:

Elizabeth Sadowski, Kate Maturen, Lauren Attridge, Cassie Vivian-Davis, Valerie Kasdan, Alexis LaCount, and Polina Petrovic, MD (Content Reviewer).

The following faculty have no relevant financial relationships to disclose:

Helen Addley, Susan Ascher, Nishat Bharwani, Kristine Burk, Aurélie Jalaguier Coudray, Rosemarie Forstner, Akshya Gupta, Nicole Hindman, Priyanka Jha, Nancy Kim, Kate Maturen, Stephanie Nougaret, Krupa Patel-Lippmann, Caroline Reinhold, Andrea Rockall, Elizabeth Sadowski, Evan Siegelman, Erica Stein, Lori Strachowski, Krista Suarez-Weiss, Vi Tran, Michelle Zhang

The below listed faculty members (speakers, etc.) have the following identified relevant financial relationships:

Rebecca Rakow-Penner – Contracted Research: General Electric
Atul Shinagare: Consulting Fee: Virtualscopics
Isabelle Thomassin-Naggara: Consulting Fee: Bard, Bayer, Guerbet; Honoraria: General Electric, Bracco, Fujifilm, Canon, Hologic, GSK, Incepto Medical, Siemens
Angela Tong: Research Support: Siemens Healthcare

Physician Accreditation and Designation Statements


Credit Designation Statement

The American College of Radiology designates this enduring material activity for a maximum of 3.0 AMA PRA Category 1 CreditsTM. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Accreditation Statement

The American College of Radiology is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

CME Release: 07/13/2023
CME Expires: 07/13/2026

For information about the accreditation of this program, please contact the ACR at info@acr.org.