RecruitingPhase 2Drug trialPOSLUMA® (18F-rhPSMA-7.3) PET-CT for PIRADS 2/3 LesionsThe goal of this study to determine if using the (18)F-rhPSMA-7.3 PET-CT scan can improve the ability to spot serious prostate cancer in patients who have uncertain MRI results. These uncertain results include MRI results that showed a PIRADS 2 or PIRADS 3 area on the prostate. The investigators want to find out if this new test is better to detect prostate cancer than just doing a biopsy based on MRI alone.