Brachytherapy is the oldest, yet less known radiotherapy method. In brachytherapy, radioactive sources are distributed intracavitarily and interstitialy or contact the target tumor to irradiate it at high doses, and minimize the burden on the adjacent healthy tissues-organs.In particular, High Rate Dose Brachytherapy (HDR) uses high-activity sources (Ir-192) allowing the dose to be administered in the shortest amount of time (lasts only a few minutes) in the best possible way.