Reconstruction and Pseudo-3-Dimensional Presentation of the Uterus from Automatic Segmented Transversal Ultrasound Slices — A Fundamental Precondition for Optimizing the Individually Adjusted Therapy Planning in Case of Carcinoma of the Body of the Uterus

Intrauterine ultrasonography has proved to be a new imaging method for showing normal myometrium and detecting its pathologic modifications especially for localisation and infiltration depth of malignant processes. Intracavitary radiotherapy, especially high-dose afterloading-technique may thus be planned by means of the produced crossections showing a precisely defined target volume, as sonographic probe and afterloading probe have the same geometric configuration. A method is presented, which allows a computer-assisted determination of the tumour volume by means of the automatic segmentation of organ sections and a pseudo-3-dimensional projection of the uterus in combination with the energy dose distribution of the radioaktive source.