Abstract

The aim of our study is to determine the most suitable system for the better dose distribution of the brachytherapy treatment of cervix cancer by the Cesium-137, and recommended for use in Algeria anti-cancer centers. It is mainly concentrated on clinical and dosimetrical aspects in brachytherapy treatment of cervix cancer, through notably, the doses distribution while using, the Manchester method (prescription at the A point) and the method recommended by the ICRU 38 (International Commission one Radiation Units and measurements, Report N°38) that give the prescription of the dose in terms of treated volume. We used these methods of doses prescription, for the choice of the reference isodose, and also to estimate received doses in organs at risk. The gotten results show that both methods have significant differences in the choice of the reference isodose three centers. However, the method recommended by the ICRU-38 is best approximate to the clinical reality for the choice of the reference isodose. Both methods show that received doses in organs at risk are within tolerance. Despite this, the radiation therapist role for this type of treatment is still important.

Keywords: LDR brachytherapy; Cesium-137; Dosimetry; ICRU 38; Manchester system