Implantação da técnica Total Skin Electron Therapy no Hospital do Câncer de Uberlândia

Abstract

Since the 1950s , electron radiation beams have been shown to be important for clinical aplications. In particular, diseases that required irradiation throughout the total skin surface, such as mycosis fungoides, led to development os special techniques called Total Skin Electron Therapy (TSET). In order to provide a uniformdose on the entire surface of the skin, TSET, is a highly specialized technique and it has proven to be effective palliative and curative treatment of skin diseases. Among the possible ways to irradiate the entire surface of the skin, the technique that has most stood out and being implanted in hospital services worldwide, is the technique of six bundles of dual field, also known as Stanford technique. However the implementation of such techniques is complicated by requiring a dosimetry and very specific requirements. Based on the report number 23 of the American Association of Physicians inMedicine (AAPM) that gives the guidelines for the Stanford technique, such a method was implanted in Hospital of the Cancer of Uberlândia (HCU), for the justification of being a hospital of reference in your region. The most important parameters for certification of this type of treatment are the flatness of the beam in the treatment plane, contamination of photons and factor of correction B. From the measurements made by the HCU a maximum variation of 5.9 % was obtained for the vertical axis and 3.2 % for the horizontal axis; a photon contamination of 2.3 %, and a factor B of 2.72.