MRI evaluation and characterization of adnexal lesions using a modified, non-DCE O-RADS MRI Scoring System: A prospective diagnostic accuracy study

ABSTRACT Background: Ovarian cancer is a major global health issue and a leading cause of cancer-related deaths among women. While ultrasound is the primary imaging tool, up to 25% of cases remain indeterminate. Magnetic Resonance Imaging (MRI) serves as a crucial second-line tool, and the Ovarian-Adnexal Reporting and Data System (O-RADS) MRI scoring system provides a structured framework for risk stratification.