Abstract
Prostate carcinoma is one of the most significant social oncological diseases among the male population. With the improvement of early diagnosis through PSA screening, new therapeutic options are open to patients. After the introduction of prostatectomy, it was clear the curative treatment for prostate cancer could have unpleasant effect on the erectile function and in this way to worsen the sexual health of men. The alternative of radical surgical treatment is radiotherapy. For that reason, the treatment by Stereotactic Body Radiation Therapy with Cyberknife for low- and intermediate-risk prostate cancer is gaining more and more popularity and scientific evidence. Even that the preservation of the erectile function after prostate radiation is still an ongoing challenge for the modern radiation oncology and the question of how to improve therapeutic techniques to achieve better results remains open