In recent years, significant changes have taken place in the treatment of prostate cancer. Modern radiation treatment technologies are beginning to take a leading position not only in localized and locally-advanced forms of the disease, but also in the case of oligometastatic process. This encourages a natural interest in various aspects of radiation therapy of prostate cancer, in particular its effects on erectile function status. Analysis of domestic literature shows the complete absence of publications on the technical possibilities of radiation therapy to preserve potency after treatment. The purpose of this work was to highlight this critical issue. © 2020 ABC-press Publishing House. All rights reserved.