My father (85 years old) just finished a course of the nuclear medicine and found that it performed better than expected. It really targeted the cancer, which is throughout his body now. He was diagnosed with pc at age 65 (Stage 4). He had RALP, followed by radiation, chemo, hormone therapy, and nuclear. (I may be missing some treatments.). The nuclear medicine will make you tired, but my father says it was work it. Good luck!