This trial studies how well gallium Ga 68-labeled prostate specific membrane antigen (PSMA)-11 (68Ga-PSMA) positron emission tomography (PET) works in patients with ovarian cancer to detect whether the tumor has spread to other places in the body. 68Ga-PSMA is a radioactive substance that binds to blood vessels around the ovarian cancer and can be imaged using PET. Diagnostic procedures, such as PET, may help find and diagnose find out how far the disease has spread.
Inclusion Criteria: 1. Patients with one of the following, identified on prior imaging (CT, MRI or Ultrasound): 1. adnexal mass 2. abdominal or pelvic tumor suspicious for ovarian cancer metastases (either suspected on clinical grounds, or known from prior tissue sampling) 2. Female, 3. Age \>= 18 years 4. Creatinine \</= 1.5 mg/dL 5. Ability to understand a written informed consent document, and the willingness to sign it Exclusion Criteria: 1. Pregnant or breastfeeding women 2. Patient unlikely to comply with study procedure, restrictions and requirements and judged by the investigator to be unsuitable for study participation.