Contrast-enhanced Ultrasound Evaluation of Indeterminate Ovarian Lesions: Prospective Multicenter Study

The goal of this clinical trial is to learn how well contrast-enhanced ultrasound (CEUS) can diagnose ovarian cancer in patients with indeterminate or suspicious ovarian/adnexal lesions identified on routine ultrasound or MRI. The main questions it aims to answer are: How accurately can qualitative CEUS imaging features distinguish malignant from benign ovarian/adnexal lesions? How consistent are the CEUS assessments among different readers, and can combining CEUS findings with MRI and clinical information improve diagnostic performance? Participants will: Undergo a baseline pelvic ultrasound followed by CEUS imaging using an intravenous ultrasound contrast agent. Receive a second contrast injection during the same examination so that additional CEUS images can be obtained. Be followed for up to 1 year, with standard-of-care imaging or pathology used as the reference for determining whether the ovarian/adnexal lesion is benign or malignant.