Evaluation of 68Ga-FAPI-46 and 18F-FDG PET/CT Imaging for Detecting Recurrent Tumor Lesions in Patients of Ovarian Cancer

This study is evaluating two types of PET/CT scans — one using a tracer called 68Ga-FAPI-46 and the standard 18F-FDG scan — to see which is better at detecting ovarian cancer that has come back after successful treatment. **You may be eligible if...** - You have been diagnosed with ovarian cancer and had a complete response to treatment - You are between 30 and 80 years old - Your CA-125 blood marker (a sign of ovarian cancer) has risen above normal or doubled - You are willing to have further treatment if cancer is found again **You may NOT be eligible if...** - You have had another type of cancer - You are pregnant or breastfeeding - Your blood sugar is above 200 mg/dL while fasting - You are allergic to the scan contrast agents used - You are unable to lie still for 30 minutes during the scan Talk to your doctor to see if this trial is right for you.