Validation of Prone Crawl Radiotherapy for Whole-breast Irradiation After Breast Conserving Surgery

This is a phase II non-randomized trial, where 40 patients will be treated for breast cancer requiring whole breast irradiation as per standard of care. Patients will be simulated and treated using the novel prone crawl position to a total dose of 40.05 Gy in 15 fractions of 2.67 Gy. The trial aims to evaluate setup precision, patient comfort and setup time in the prone crawl positioning. Feasibility of deep inspiration breathhold will be tested and dosimetric parameters evaluated. This is done through registration of setup errors at the time of treatment, questionnaires for comfort/discomfort scoring, time registration, toxicity scoring, and dosimetric analysis in treatment planning systems.