Value of kiel compensating system in the mantle field treatment of malignant lymphomas

ABSTRACT

We have presented a method which enables the radiotherapist to achieve homogenization of dosage in relation to an arbitrary reference plane in the body of the patient, within a mantle field. The irregularly shaped body surface of the patient and tissue inhomogenecities are taken into account by this method. In addition, the required compensator can be conceived by the broad beam will receive a dosage different from that applied to the rest of the field Beside irradiation of a patient with Hodgkin's disease, the technique described her is suitable for treatment of tumors in the region of the head and neck, and for the breast cancer serving treatment. Another advantages of the KIEL compensating system is compensation of distortion of dose distribution caused by surface irregularities and inhomogenecitis, by means of C.T. monitored compensation, and Iimitaion of the whole treatment volume using individually shaped divergent field shields. Further more, its safe practicable adjustment with defined positioning and few tatlooable adjustment points without making field limits render it very practical. Moreover we have developed new and unique method for quality asserance with measurements only behind the patients, no measurements on the patients'surface as well as within the patients