Use of PET/MRI Tracer to Further Understanding of Prostate Cancer Development

Inclusion Criteria: The study population will consist of patients with known urologic cancer who are scheduled to undergo MRI with gadolinium for their routine care. Patients will be referred by the Urology or Medical Oncology Departments for participation in the study. Subjects will be selected on the basis of their willingness and ability to participate and on their likelihood of completing the study. Patients agreeing to participate will be presented with a flyer which will inform subject about the available research study and study contact information. participation is entirely voluntary, and a subject may withdraw from the study at any time. Normal volunteers will be recruited accessing the existing database of normal volunteers maintained in Radiology Research department. Exclusion Criteria: Normal MRI exclusion criteria will apply, including those on the following list. A standard MRI safety form will be used to identify potential conditions warranting exclusion. * Electrical implants such as cardiac pacemakers or perfusion pumps * Ferromagnetic implants such as aneurysm clips, surgical clips, prostheses, artificial heart, valves with steel parts, metal fragments, shrapnel, bullets, tattoos near the eye, or steel implants * Ferromagnetic objects such as jewelry or metal clips in clothing * Claustrophobia * History of seizures