Ovarian-Adnexal Reporting & Data System (O-RADS™)

O-RADS™ is an acronym for an Ovarian-Adnexal Imaging-Reporting-Data System which will function as a quality assurance tool and clinical support system for the standardized description of ovarian/adnexal pathology and its management. A uniform vocabulary using the most predictive internationally agreed upon lexicon descriptors for describing the imaging characteristics of ovarian/adnexal masses has been applied to a data-based risk stratification classification for consistent interpretations leading to appropriate management in clinical practice. The system’s goal is to optimize ovarian cancer outcomes while minimizing unnecessary surgery in patients at low risk of malignancy.

ORADS™ can also be accessed via the ACR Guidance App. Learn more»

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Ovarian-Adnexal Reporting and Data System (O-RADS) by American College of Radiology  is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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O-RADS Ultrasound Current Releases

Ultrasound Educational Resources

The O-RADS Ultrasound education subcommittee has created a three-part webinar series to discuss the implementation of the O-RADS US concepts as written in the Ovarian-Adnexal Reporting Lexicon for Ultrasound: A White Paper of the ACR Ovarian-Adnexal Reporting and Data System Committee and the O-RADS US Risk Stratification and Management System:A Consensus Guideline from the ACR Ovarian-Adnexal Reporting and Data System Committee.

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O-RADS MRI Current Releases

MRI Educational Resources

ACR disclaims liability for any acts or omissions that occur related to an individual's or entity's use of ACR's RADS, including but not limited to, translations of a specific RADS work.

For a full list of RADS Translated documents, please visit the RADS Translations page



The document below contains the original O-RADS US Risk Stratification tables, including the assessment categories and management recommendations.

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