Abstract

Intracavitary afterloading therapy -- a customary system to treat malignant tumours in gynaecology -- has received an appropriate basis by development of intrauterine ultrasound, because on the one hand sonographic probe and afterloading probe produce the same geometric circumstances and on the other intrauterine ultrasound has proved to be a method for showing normal myometrium and detecting its pathologic modified regions, especially for localisation and infiltration depth of malignant processes. After computer assisted segmentation and reconstruction of organ slices in three dimensional domain various dose distributions are calculated in case of carcinoma of the body of the uterus. They are produced by various probes and times, during which the radioactive source stops. Using a system of decision rules, a therapy plan is selected, which is an optimum adaptation to the individual geometric circumstances.

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