[A comparison between the dose distribution from 192Ir point and line sources in the afterloading therapy of gynecologic neoplasms].

Abstract

For different fields of application in irradiation of gynecological tumors a comparison of isodose distribution is done with "point-shaped" and "line-shaped" 192Ir-source. With the oblateness of dose efficiency distribution towards the axis of source with the "line-shaped" 192Ir-source an improvement of dose distribution occurs in intracavitary irradiation with the lower and more balanced exposure of fundus uteri, especially in irradiation of the endometrial carcinoma. On the other hand the irradiation of vaginal stump renders problematic. In pure vaginal irradiation no differences are found in medically interesting range.