High-precision Adjuvant Radiotherapy for Early-stage Breast Cancer Patients to Reduce Toxicity and Improve Survival

The risk of long-term toxicity of radiation treatment for early-stage breast cancer can be reduced by using partial breast irradiation, lungsparing and a non-coplanar beam set-up. The drift of the patient during irradaition and the motion of markers relative to the treatment target are important factors for the calculation of the margin required for partial breast irradiation.