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[Optimization of intracavitary radiotherapy of uterine cancer by intrauterine sonography].

Until now the evolution of irradiation planning has above all considered the individual situation in the small pelvis, because there was no reliable diagnostic method to discern the infiltration within the myometrium. Intra-uterine sonography allows an exact presentation of the tumor infiltration within the myometrium. Thus the target volume for intracavitary therapy can be defined. Besides an optimal irradiation planning, a rapid and reliable diagnosis of a Via falsa as well as an estimation of regions especially endangered by perforations are possible.