Fluciclovine F18 PET/CT Imaging in Assessing Hormone-Naive Men With Prostate Cancer That Has Spread to the Bone

Inclusion Criteria: * Enrollment on IRB #102312 (A Phase 2 Study of Radium-223 and Radiotherapy in Hormone-Naive Men with Oligometastatic Prostate Cancer to Bone). * Patients must document their willingness to be followed for up to 24 months after recruitment by signing informed consent documenting their agreement to allow access to the data obtained on IRB #102312 and information and data entered into a research database. * All patients, or their legal guardians, must sign a written informed consent and Health Insurance Portability and Accountability Act (HIPAA) authorization in accordance with institutional guidelines. Exclusion Criteria: * Patients with known allergic or hypersensitivity reactions to previously administered radiopharmaceuticals. Patients with significant drug or other allergies or autoimmune diseases may be enrolled at the Investigator?s discretion. * Patients who require monitored anesthesia for PET scanning. * Patients who are too claustrophobic to undergo PET scanning.