RecruitingRadiation therapyEvaluating Tolerability of ePUHRT With Brachytherapy BoostThe purpose of this study is to evaluate the tolerability and toxicity of combining two radiation therapy methods for prostate cancer: Elective Pelvic Ultra Hypofractionated Irradiation Treatment (ePUHRT), which is an external beam radiotherapy with High Dose Rate Brachytherapy Boost (form of internal radiation where a cancer doctor implants a small plastic tube or balloon (catheter) in the tumor).