ESTRO 2022 - Abstract Book

S1500

Abstract book

ESTRO 2022

Conclusion Comparing the D98 of clinical treatment plans across 24 different motion mitigation settings indicates that adding randomness has no effects and that 4D-CT plans are intrinsically more robust compared to ITV plans,. While rescanning is highly beneficial in hypofractionated treatments, fractionation makes rescanning unnecessary in standard fractionated schemes.

PO-1701 Why all left breast patients do not benefit from DIBH techniques? A retrospective analysis

N. Garcia Apellaniz 1 , P. Gallego 1 , J. Pérez-Alija 1 , C. Ansón 1 , N. Jornet 1 , H. Vivancos 1 , A. Ruiz 1 , M. Barceló 1 , F. Leo 1 , A. Latorre 1 , P. Carrasco 1

1 Hospital de la Santa Creu i Sant Pau, Servicio de Radiofísica y Radioprotección, Barcelona, Spain

Purpose or Objective Deep Inspiration Breath Hold (DIBH) is used in left-sided breast radiotherapy to reduce the dose delivered to the OARs, mainly to the heart and homolateral lung. We implemented a DIBH technique in 2016 and, since then, there has been a