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Intra- and inter-fraction breath-hold variations and margins for radiotherapy of abdominal targets

Radiotherapy in expiration breath-hold (EBH) has the potential to reduce treatment volumes of abdominal targets compared to an internal target volume concept in free-breathing. The reproducibility of EBH and required safety margins were investigated to quantify this volumetric benefit. Pre- and post...

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Autores principales: Ehrbar, Stefanie, Schrader, Markus, Marvaso, Giulia, Perryck, Sophie, Van Timmeren, Janita E., Pavic, Matea, Moreira, Amanda, Tanadini-Lang, Stephanie, Guckenberger, Matthias, Andratschke, Nicolaus, Garcia Schüler, Helena
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10692905/
https://www.ncbi.nlm.nih.gov/pubmed/38045640
http://dx.doi.org/10.1016/j.phro.2023.100509
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author Ehrbar, Stefanie
Schrader, Markus
Marvaso, Giulia
Perryck, Sophie
Van Timmeren, Janita E.
Pavic, Matea
Moreira, Amanda
Tanadini-Lang, Stephanie
Guckenberger, Matthias
Andratschke, Nicolaus
Garcia Schüler, Helena
author_facet Ehrbar, Stefanie
Schrader, Markus
Marvaso, Giulia
Perryck, Sophie
Van Timmeren, Janita E.
Pavic, Matea
Moreira, Amanda
Tanadini-Lang, Stephanie
Guckenberger, Matthias
Andratschke, Nicolaus
Garcia Schüler, Helena
author_sort Ehrbar, Stefanie
collection PubMed
description Radiotherapy in expiration breath-hold (EBH) has the potential to reduce treatment volumes of abdominal targets compared to an internal target volume concept in free-breathing. The reproducibility of EBH and required safety margins were investigated to quantify this volumetric benefit. Pre- and post-treatment diaphragm position difference and the positioning variability were determined on computed tomography. Systematic and random errors for EBH position reproducibility and positioning variability were calculated, resulting in margins of 7 to 12 mm depending on the prescription isodose and fractionation. A reduced volume was shown for EBH for lesions with superior-inferior breathing motion above 4 to 8 mm.
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spelling pubmed-106929052023-12-03 Intra- and inter-fraction breath-hold variations and margins for radiotherapy of abdominal targets Ehrbar, Stefanie Schrader, Markus Marvaso, Giulia Perryck, Sophie Van Timmeren, Janita E. Pavic, Matea Moreira, Amanda Tanadini-Lang, Stephanie Guckenberger, Matthias Andratschke, Nicolaus Garcia Schüler, Helena Phys Imaging Radiat Oncol Short Communication Radiotherapy in expiration breath-hold (EBH) has the potential to reduce treatment volumes of abdominal targets compared to an internal target volume concept in free-breathing. The reproducibility of EBH and required safety margins were investigated to quantify this volumetric benefit. Pre- and post-treatment diaphragm position difference and the positioning variability were determined on computed tomography. Systematic and random errors for EBH position reproducibility and positioning variability were calculated, resulting in margins of 7 to 12 mm depending on the prescription isodose and fractionation. A reduced volume was shown for EBH for lesions with superior-inferior breathing motion above 4 to 8 mm. Elsevier 2023-11-11 /pmc/articles/PMC10692905/ /pubmed/38045640 http://dx.doi.org/10.1016/j.phro.2023.100509 Text en © 2023 The Author(s) https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Short Communication
Ehrbar, Stefanie
Schrader, Markus
Marvaso, Giulia
Perryck, Sophie
Van Timmeren, Janita E.
Pavic, Matea
Moreira, Amanda
Tanadini-Lang, Stephanie
Guckenberger, Matthias
Andratschke, Nicolaus
Garcia Schüler, Helena
Intra- and inter-fraction breath-hold variations and margins for radiotherapy of abdominal targets
title Intra- and inter-fraction breath-hold variations and margins for radiotherapy of abdominal targets
title_full Intra- and inter-fraction breath-hold variations and margins for radiotherapy of abdominal targets
title_fullStr Intra- and inter-fraction breath-hold variations and margins for radiotherapy of abdominal targets
title_full_unstemmed Intra- and inter-fraction breath-hold variations and margins for radiotherapy of abdominal targets
title_short Intra- and inter-fraction breath-hold variations and margins for radiotherapy of abdominal targets
title_sort intra- and inter-fraction breath-hold variations and margins for radiotherapy of abdominal targets
topic Short Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10692905/
https://www.ncbi.nlm.nih.gov/pubmed/38045640
http://dx.doi.org/10.1016/j.phro.2023.100509
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