“…Radiobiological studies showed, that PDR brachytherapy is probably equivalent to LDR brachytherapy models [1,5,7,10,12,13,17,19,24,29,32,42]. Initial clinical data for different clinical situations provided some evidence to support this hypothesis [8,9,11,15,18,21,26,30,31,34,36,37,39,40,43].…”