Ultrasound is the primary imaging modality of the female pelvis which allows adequate evaluation of most adnexal lesions using transvaginal and transabdominal technique. The O-RADS US lexicon uses terms supported in the literature and by the International Ovarian Tumor Analysis (IOTA) group to describe ovarian/adnexal lesions and assign a risk of malignancy. Imaging and clinical management recommendations accompany the risk assessment categories to optimize patient outcomes. An update to the O-RADS US system was made in November 2022 (O-RADS US v2022) and all governing documents (tables, lexicon, governing concepts, etc.) have been modified accordingly.
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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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Incorporating O-RADS US v2022 in Daily Clinical Practice (January 2024)
O-RADS US Governing Documents/ Tables
O-RADS US Implementation Tools
O-RADS US Education
O-RADS US Literature
- 2023 – O-RADS US v2022 Update
- 2023 – External Validation of O-RADS US and IOTA 2-Step Strategy
- 2023 – Review of O-RADS US Validation Studies
- 2022 – Diagnostic Performance of O-RADS US in the USA
- 2021 – O-RADS US - A User’s Guide from the AJR Special Series on RADS
- 2020 – Original O-RADS US Risk Stratification and Management System
- 2018 – Original O-RADS US Lexicon White Paper