[Representation of tumor and organ contours by projection radiography--an important supplement to radiotherapeutic treatment planning].

A special program developed in collaboration with the manufacturer ot the computer tomograph Somatom DR3 allows to transfer organ or tumor shapes from the transverse computed tomography scan to the localization radiograph (projection radiography). Some typical examples are presented in order to describe the possibilities offered for radiotherapy planning by this method. The procedure may be applied in all cases where neoplasms have to be irradiated or to spared and where this is of a decisive importance for simulator planning.