[Radiotherapy optimization in breast cancer: filtration, electronic compensation, intensity modulation]

Purpose of radiation treatment after conservative surgery for breast cancer is improvement of long-term local control rate and reduction of heart and pulmonary toxic events for women with long life expectancy. Breast irradiation with intensity modulation might be promising, as results of treatment planning (dose-volume histogram and normal tissue complication probability) showed. Project of our study is to evaluate the advantage of each following techniques: wedged plans, electronic compensation and intensity modulation.