Necessity of energy layer repainting for proton radiotherapy in breast cancer patients

Physics and Imaging in Radiation Oncology 2026 Open access

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Authors: Bojan Štrbac, Truls Andersen, Jeffrey Free, Pietro Piscotta, John Maduro, Johannes A. Langendijk
DOI: 10.1016/j.phro.2026.100971
Cited by: 1
References: 12

Abstract

This study assessed the necessity of energy layer repainting for free-breathing breast proton therapy using pencil beam scanning (PBS). Ten patients were analyzed via log file-based 4D dose reconstruction across three scenarios: no repainting (1×), 3×, and 5× energy-layer repainting. Median target coverage deviations (D 98 %) remained within ±4.1% for all strategies, with no statistically significant differences (p > 0.05). Respiratory motion was minimal (mean

Fields of Study & Subjects

Radiation Therapy and Dosimetry Hydrogen's biological and therapeutic effects Advanced Radiotherapy Techniques

Publication details

Journal / source
Physics and Imaging in Radiation Oncology
Publisher
Elsevier BV
Volume
39
Pages
100971–100971
Publication date
17 April 2026
Language
EN