[Treatment planning with computerized digital radiography (author's transl)]

An essential development in individual treatment planning by means of computed tomography is reported in the present contribution. Digital radiography makes possible a representation of the body segments to be irradiated, visualizing frontal and lateral views in a quality almost equal to conventional X-ray radiographs. As a decisive advantage, beside the image reproduction without distortion, must be regarded digital localization of the field's limits and mid-point in the isocenter and, therefore, accurate localization of the transversal layer for treatment planning. Utilization of computed tomography combined with digital radiography thus appears as a real alternative of the therapy simulator.