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Updated: Jul 26, 2025

A Coregistered Ultrasound and Photoacoustic Imaging Protocol for the Transvaginal Imaging of Ovarian Lesions
Published on: March 3, 2023
Practical Tips for Reporting Adnexal Lesions Using O-RADS MRI.
Krista E Suarez-Weiss1, Elizabeth A Sadowski1, Michelle Zhang1
1From the Department of Radiology, Abdominal Imaging and Intervention, Brigham and Women's Hospital, 75 Francis St, Boston, Mass 02115 (K.E.S.W., K.S.B., A.B.S.); Department of Radiology, University of Wisconsin Health University Hospital, Madison, Wis (E.A.S.); and Department of Radiology, McGill University Health Centre, Montreal, Quebec, Canada (M.Z., V.T.T.).
The Ovarian-Adnexal Reporting and Data System (O-RADS) MRI provides a standardized way to assess adnexal lesions. This system uses imaging features to predict malignancy risk, aiding in better patient management.
Area of Science:
- Radiology
- Oncology
- Gynecology
Background:
- Adnexal lesions require accurate risk stratification for optimal management.
- Current reporting methods for adnexal lesions can lack standardization and lead to communication variability.
- The Ovarian-Adnexal Reporting and Data System (O-RADS) MRI was developed to address these challenges.
Purpose of the Study:
- To present a standardized lexicon and evidence-based risk score for adnexal lesion evaluation using MRI.
- To improve the quality of radiology reports and communication between radiologists and clinicians.
- To optimize the clinical management of patients with adnexal lesions.
Main Methods:
- Utilizing the Ovarian-Adnexal Reporting and Data System (O-RADS) MRI risk stratification system.
- Assessing specific imaging features such as lipid content, enhancing solid tissue, number of loculi, and fluid type.
- Applying an algorithmic approach to the O-RADS MRI risk stratification.
Main Results:
- The O-RADS MRI risk score ranges from <0.5% probability of malignancy for benign features to ~90% for high-risk solid tissue.
- The system provides a standardized lexicon to reduce reporting variability.
- The risk score aids in optimizing patient management decisions.
Conclusions:
- The O-RADS MRI system offers a standardized and evidence-based approach to evaluating adnexal lesions.
- This system enhances communication and improves the accuracy of malignancy risk assessment.
- Implementation of O-RADS MRI facilitates more effective management strategies for adnexal lesions.
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