["Massfunktionen" as limit conditions of an optimization scheme for the telecobalt therapy (author's transl)]. / "Massfunktionen" als analytisch gefasste Randbedingungen eines Optimierungsmodells für die Telekobaltstrahlentherapie.

The basic ideas of the "Score-Funktionen-Modell" of Hope and his collaborators are used for the establishment of the first stage of an optimization scheme for the telecobalt therapy. The new "Massfunktionen" for the telecobalt therapy are limit conditions for the criterion of the optimum, i.e. the dose distribution in a body section. The "Massfunktionen" are an analytic registration of parameters for the dose distribution such as dose homogeneity in the focal region and sparing of the subcutaneous tissues, the radiosensitive organs and the sound surroundings of the tumor. The functions are derived from the dose conditions in the irradiated body section. At the actual stage of development of the optimization scheme, these functions allow to decide whether an irradiation scheme is acceptable or not.

[Optimization in planning and application of 60 Co gamma irradiations - analysis of the problem (author's transl)]. / Zur optimierung bei der Planung und Durchführung von Telekobaltbestrahlungen - Problemanalyse.

As an aspect of the complex problem of optimization in therapeutical transmission of radiation energy to Man, the dose distribution within a cross-sectional area of the body is considered. For the judgement on optimal dose distributions, involving judgement on irradiation technique, boundary conditions are needed which encompass important parameters of a dose distribution (= criterion for optima). For computer-assisted optimization the boundary conditions are to be scheduled by an appropriate algorithm. The parameters describing a dose distribution are indicated. Practical utilization of computer-assisted optimization of dose is represented by means of two optimization schedules.