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O-RADS™ MRI

O-RADS MRI reporting and data system

License: CC BY-ND 4.0 DEED
O-RADS MRI image

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MRI can provide additional soft tissue detail and characterization of ovarian/adnexal lesions and is used as a secondary modality in the O-RADS risk stratification system. The O-RADS MRI lexicon and risk score incorporate terms supported in the literature to describe ovarian/adnexal lesions and assign a risk of malignancy.

MRI increases the specificity for the diagnosis of malignancy, due to its ability to detect enhancing solid tissue and can exclude malignancy when there is no enhancing solid tissue.

Further reading:

Putting O-RADS MRI to Work

O-RADS MRI: A Guide to the Lexicon, Risk Score and TechniqueEducation Activity

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Learn how to incorporate O-RADS MRI in the evaluation of patients with adnexal lesions in clinical practice through the use of lexicon terms, imaging techniques and risk stratification system.
Viewers will become more familiar with O-RADS MRI and develop an approach to assess lesions in a stepwise algorithmic manner.

By incorporating O-RADS into clinical practice, clinicians can improve risk stratification of adnexal lesions and ensure appropriate patient management and outcomes.

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Learning Objectives

  1. Describe how to accurately characterize both fluid and solid components on MRI using T1-weighted with and without contrast, T2-weighted and diffusion-weighted imaging sequences.
  2. Identify technical requirements and the risk score categories in the O-RADS MRI risk stratification system.
  3. Develop an algorithmic approach to analyzing adnexal lesions on MRI based on their imaging appearance.

In order to successfully complete the activity, participants must complete an activity evaluation and claim credit commensurate with their participation in the activity.

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 the following identified relevant financial relationships: Erica Stein – Consulting Fee: AOA DX

The following planners and managers have no relevant financial relationships to disclose: Elizabeth Sadowski, Krupa Patel-Lippman, Lauren Attridge, Cassie Vivian-Davis, Valerie Kasdan, Marielia Gerena, Alexis LaCount, and Maddy Gerhart.

The following speakers have no relevant financial relationships to disclose: Elizabeth Sadowski and Krupa Patel-Lippman

The following speakers have the following identified relevant financial relationships: Erica Stein – Consulting Fee: AOA DX

Credit Designation Statement

The American College of Radiology designates this enduring material activity for a maximum of 1.25 AMA PRA Category 1 Credit™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Physician 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: 9/9/2024
CME Expires: 9/9/2027

For information about the accreditation of this program, please contact the ACR.

O-RADS MRI: A Primer for Lesion CharacterizationEducation Activity

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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.

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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

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.

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

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.

Additional Educational Information

O-RADS MRI Literature

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Licensing RADS content

License Information

Reporting and Data Systems (RADS) by the American College of Radiology are licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License. Permissions beyond the scope of this license may be available by using our permission form. Contact us: rads@acr.org