QUASI-SIMILAR TARGETS METHOD FOR FORMATION OF EFFECTIVE THERAPEUTIC DOSE FIELDS IN INTERSTITIAL BRACHYTHERAPY OF MALIGNANT TUMORS
The article gives and justifies the quasi-similar targets method intended for problem solving of formation of effective (compromise) therapeutic dose fields in the target and on its border. The quasi-similar targets method represents the synthesis of two methods: the extremal problem solving of optimum allocation of the sources in the target (without taking into account the dose distribution restrictions in the target contour) and the interactive visual optimization method meant for the determination of the effective (compromise) irradiation plan from the alternative variety. With the help of the first method the optimum irradiation plan is provided for the set quasi-similar targets. With the help of the second method the manual correction of dose fields and multicriteria estimation of the alternative irradiation plans (dose distributions and their characteristics) is done for the choice of the effective (compromise) irradiation plan.