The weighted geometric center in the remote afterloading intracavitary therapy for carcinoma of the uterine cervix.

In this paper, we investigate the weighted geometric center as one of the parameters to reflect the weight of source arrangement of the intracavitary technique for carcinoma of the uterine cervix. Since the nonrigid applicator is used at our department, there are some differences between point-A doses on both sides, and also between the actual and planned doses of point A, in spite of using our pretreatment computerized dose calculation system. Based on this study, it is suggested that the weighted geometric center is reflected in the inclination of the dose distribution and the ratio of actual to planned mgh which means the weight factor in our pretreatment computerized calculation system. It seems likely that the weighted geometric center is one of the parameters to compare the intracavitary technique for carcinoma of the uterine cervix.