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Yeungnam Univ J Med > Volume 6(1); 1989 > Article
Yeungnam University Journal of Medicine 1989;6(1):87-98.
DOI: https://doi.org/10.12701/yujm.1989.6.1.87    Published online June 30, 1989.
Clinical Evaluation of Dose Distribution in High Dose Rate Intracavitary Irradiation in the Treatment of Cervical Cancer.
Sei One Shin, Myung Se Kim
Abstract
Clinical estimation of bladder and rectal doses from high dose rate intracavitary irradiation in carcinoma of the cervix uteri has been initiated on a routine basis in an effort to obtain the optimum radiotherapeutic dose. Simulation films with contrast media are used to image the bladder and rectum, and dose rates are estimated at various interesting points with the aid of treatment planning computer, NEC Therac-2300. Fifty-three patients have been reviewed in order to ascertain the correlation between radiation dose at interesting points in the bladder and rectum and the dose at Point A and B. The dose ratio between doses at Point A and interesting points in an important clinical factor in evaluating the treatment planning. This also serves as documentation of the dose to normal structures within the treatment volume. Authors conclude that obtained data are within acceptable ranges and routine simulation films of the bladder and rectum after administration of contrast media with dose calculations at interesting points provide important information for optimizing radiotherapy planning in the treatment of cervical carcinoma without increased time and effort or patient's discomfort.


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