Optimization of the intracavitary irradiation of patients with cancer of the endometrium

: Twelve variants of uterine cavity structure were defined on analysis of 52 hysterocervicograms performed in patients with cancer of the uterine body. Using the method of linear programming, the most effective schemes for the location of radiation sources were proposed to ensure optimum dose distribution in intracavitary irradiation. Sources I and II were the main contributors to dose distribution. The use of sequential radiation sources was appropriate in considerable sizes of the uterine cavity. In a spherically shaped uterine cavity dose distribution could be ensured by using only one source, located in the center.