ESTRO 2022 - Abstract Book

S1274

Abstract book

ESTRO 2022

PO-1497 Identifying an optimal proton planning strategy for varying bowel density in complex neuroblastomas

A. Toltz 1 , S. Court 1 , V. Rompokos 1 , J. Gains 2 , M. Gaze 2 , A. Poynter 1 , Y. Chang 2 , P. Lim 2

1 University College London Hospitals NHS Foundation Trust, Department of Radiotherapy Physics, London, United Kingdom; 2 University College London Hospitals NHS Foundation Trust, Department of Oncology, London, United Kingdom Purpose or Objective Proton beam therapy (PBT) is particularly sensitive to anatomical changes resulting in dosimetric degradations to the target volume coverage and normal tissue sparing. Young children with neuroblastoma treated under general