The Role of Ga68-PSMA-11 PET Imaging in Prostate Cancer Patients Undergoing Androgen Deprivation Therapy

For PSMA PET/CT scan, the subject will have catheter(s) placed for intravenous administration of \[68Ga\]PSMA-11. Subjects will receive a single intravenous bolus of 2-5 mCi \[68Ga\]PSMA-11 and received PET/CT scan 60 minutes later. Patient will underwent two times of PSMA-11 PET/CT scans before and under androgen deprivation therapy within a 10-14 weeks interval.