PET Imaging of Ovarian Carcinoma With 18F-FSPG

Inclusion Criteria: * Have a presumed diagnosis of advanced stage epithelial ovarian, fallopian tube, or peritoneal. * Pelvic mass and/or omental caking with Ca-125:CEA ratio 25:1. * Adequate performance status, ECOG 0, 1, 2. * Adequate organ function: * PCV \> 30 (with or without transfusion) * WBC: 3000 - 10,000 The lower level of normal for total WBCs is 4,000, but the NCI considers levels of 3,000- 4,000 as mild suppression for drug trials, specifically not requiring treatment. * Platelet count \> 150, 000 and \< 1,000,000 * Cr \< 1.5 * LFTS \< 1.5 x ULN * Have undergone or have agreed to undergo standard of care CT of the chest, abdomen, and pelvis. 18F-FSPG PET imaging will be performed as investigational studies. * No prior treatment for ovarian cancer * have undergone or agree to undergo standard of care imaging for ovarian cancer with CT chest, abdomen, and pelvis. Exclusion Criteria: * Have non-invasive or non-epithelial ovarian cancer on pathological confirmation. * Pregnant and breastfeeding * Poorly controlled diabetes mellitus (fasting blood glucose level \> 200 mg/dL). * Other poorly controlled medical conditions that in the opinion of the surgeon, make them not a candidate for primary cytoreductive surgery. * CT of chest, abdomen, pelvis demonstrates: * Any disease in the thoracic cavity \> 1 cm. * Any suprarenal lymphadenopathy \> 1 cm. * Liver metastases \> 1 cm. * Disease in the porta hepatis or gallbladder fossa \> 1 cm. * Pleural effusion \> 50% volume of the chest cavity on chest x-ray. * Omental extension to the stomach, spleen, or lesser sac. * Extension to the pelvic sidewall (this criteria may also be assessed on physical examination. * involvement of the root of the mesentery. * Decline procedures that might be necessary for optimal primary cytoreduction (i.e. colostomy or splenectomy).