The 40 MeV medical betatron. Experience versus predictions

The energy and the radiation intensity of the Bremsstrahlung and electron beams are the main parameters of an accelerator for radiotherapy. Among these parameters, the radiation intensity determines the absorbed dose in irradiated volume which is necessary for the sterilization of malignant tumors. The values of these parameters are directly connected with the beam-forming methods. Taking into account that the parameter values given by the International Recommendations and ICRU Reports are the predictions, and the obtained experimental values are experience, this paper presents the comparison of measured values with those predicted by international documents. The results of the comparison are within normal limits and do not affect planned treatment. (Author)