INDIVIDUALKOLLIMATOREN ALS HILFSMITTEL ZUR VERBESSERUNG DER EINSTELLGENAUIGKEIT UND REPRODUZIERBARKEIT DER BESTRAHLUNG UND ZUR SCHONUNG KRITISCHER ORGANE

Despite the technical progress regarding radiotherapeutic facilities, the positioning and fixation of the patient and the reproduction of the daily irradiation geometry is still the critical point in planning and performance of radiotherapy treatments. Besides the use of irradiation masks, an improved adjustment precision and reproducibility as well as an individualization of the target volume is achieved above all by individual collimators. The use of individual absorbers offers a precise and fast adjustment of irradiation fields at the therapy unit, an optimum adaptation of the irradiation volumes to the anatomical features of the patient and the loco-regional tumor extent as well as a selective protection of radiosensitive structures. The historical method of field-shaping by standard absorbers should be abandoned.