A multi-centre analytical study of small field output factor calculations in radiotherapy

An audit methodology was developed and applied for output factor (OF) calculations in radiotherapy. The auditees were asked to calculate OFs for field sizes from 10 × 10 cm(2) to 2 × 2 cm(2). Sixty five beams were audited; missing reference OFs were interpolated. The calculated OFs were in 73% of ca...

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Detalles Bibliográficos
Autores principales: Chełmiński, Krzysztof, Bulski, Wojciech
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2018
Materias:
Short Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807585/
https://www.ncbi.nlm.nih.gov/pubmed/33458380
http://dx.doi.org/10.1016/j.phro.2018.03.001
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author Chełmiński, Krzysztof
Bulski, Wojciech
author_facet Chełmiński, Krzysztof
Bulski, Wojciech
author_sort Chełmiński, Krzysztof
collection PubMed
description An audit methodology was developed and applied for output factor (OF) calculations in radiotherapy. The auditees were asked to calculate OFs for field sizes from 10 × 10 cm(2) to 2 × 2 cm(2). Sixty five beams were audited; missing reference OFs were interpolated. The calculated OFs were in 73% of cases higher than the reference data. The smaller the field size, the higher the overestimations which were observed in the higher fraction of cases. Treatment planning systems generally overestimated OFs for small fields. The reference dataset helped radiotherapy centres to identify discrepancies which were higher than typical.
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spelling pubmed-78075852021-01-14 A multi-centre analytical study of small field output factor calculations in radiotherapy Chełmiński, Krzysztof Bulski, Wojciech Phys Imaging Radiat Oncol Short Communication An audit methodology was developed and applied for output factor (OF) calculations in radiotherapy. The auditees were asked to calculate OFs for field sizes from 10 × 10 cm(2) to 2 × 2 cm(2). Sixty five beams were audited; missing reference OFs were interpolated. The calculated OFs were in 73% of cases higher than the reference data. The smaller the field size, the higher the overestimations which were observed in the higher fraction of cases. Treatment planning systems generally overestimated OFs for small fields. The reference dataset helped radiotherapy centres to identify discrepancies which were higher than typical. Elsevier 2018-04-24 /pmc/articles/PMC7807585/ /pubmed/33458380 http://dx.doi.org/10.1016/j.phro.2018.03.001 Text en © 2018 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Short Communication
Chełmiński, Krzysztof
Bulski, Wojciech
A multi-centre analytical study of small field output factor calculations in radiotherapy
title A multi-centre analytical study of small field output factor calculations in radiotherapy
title_full A multi-centre analytical study of small field output factor calculations in radiotherapy
title_fullStr A multi-centre analytical study of small field output factor calculations in radiotherapy
title_full_unstemmed A multi-centre analytical study of small field output factor calculations in radiotherapy
title_short A multi-centre analytical study of small field output factor calculations in radiotherapy
title_sort multi-centre analytical study of small field output factor calculations in radiotherapy
topic Short Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807585/
https://www.ncbi.nlm.nih.gov/pubmed/33458380
http://dx.doi.org/10.1016/j.phro.2018.03.001
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