[Gated radiotherapy in breast cancer]

Postoperative radiotherapy is a cornerstone of the local treatment in breast cancer. It has been proved with high level of evidence that it decreases local relapse and improves survival of patients. However, radiotherapy comes with healthy tissue toxicity, heart and lung in particular. With constant improvement of radiation techniques, several methods have been developed to decrease the dose to the heart and the lungs. Sometimes, respiratory maneuvers can help, due to patient's anatomy: the radiotherapy is gated with patient's breath. The Deep Inspiration Breath Hold technique is the most popular and there are several ways to perform it. This note will describe the different systems with published data in order to help the radiation oncologist in the daily practice.