Performance evaluation of a new automated skin flash method for radiotherapy of breast cancer

Abstract

In volumetric modulated arc therapy of breast cancer, an outer margin for the target is needed. This study evaluated the clinical and planning target volume coverage and surface dose using an automated skin flash method compared to the virtual bolus method. Body outline changes of 4, 8 and 12 mm were simulated in 20 breast cancer patients. Median V₉₅ and V₉₀ clinical target volume coverage and surface dose remained at 90.1 %, 98.7 % and 85.7 % or above with the automated skin flash method. The median results of automated skin flash method were close to virtual bolus method.