On the question of a standardized low-dose-rate afterloading therapy with a circular applicator in cervix carcinoma

At our hospital, the Munich method has already proved its value in gynecologic brachytherapy. In order to use this method for the afterloading technique (LDR), too, we developed a computer program for a standardized therapy with the circular applicator. A certain arrangement of sources is indicated for all applicator sizes. So the dose prescribed (point A) as well as the treatment times and the maximum rectum doses can be given in tabular form. Furthermore, another reduction of the exposure of the rectum could be achieved by means of a certain symmetric arrangement of the sources. To our opinion, this standardized treatment scheme allows in most cases a sufficiently exact definition of the dose distribution in the pelvis minor. If necessary, a more individualized irradiation planning can be established later using CT scans. (orig.)