Virtual micro MLC commissioning

The resolution of multileaf collimators (MLCs) is limited by their finite leaf width. A commercial package (HD‐270™) uses 3D couch translation and leaf adjustments to emulate smaller leaf widths. In this paper, we report on the commissioning of this feature using software testing, dial gauge measure...

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Detalles Bibliográficos
Autores principales: Drever, Laura, Dickof, Peter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2005
Materias:
Radiation Oncology Physics
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5723476/
https://www.ncbi.nlm.nih.gov/pubmed/15940207
http://dx.doi.org/10.1120/jacmp.v6i2.2032
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author Drever, Laura
Dickof, Peter
author_facet Drever, Laura
Dickof, Peter
author_sort Drever, Laura
collection PubMed
description The resolution of multileaf collimators (MLCs) is limited by their finite leaf width. A commercial package (HD‐270™) uses 3D couch translation and leaf adjustments to emulate smaller leaf widths. In this paper, we report on the commissioning of this feature using software testing, dial gauge measurements, and film dosimetry. We also identify a variety of limitations: software bugs and truncation artifacts, MLC leaf positioning uncertainties (random variations, systematic gantry dependence and backlash), and uncertainties in couch positioning. These reduce the capabilities of this implementation below that achievable theoretically. PACS numbers: 87.53.Kn, 87.53.Uv, 87.53.Xd
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spelling pubmed-57234762018-04-02 Virtual micro MLC commissioning Drever, Laura Dickof, Peter J Appl Clin Med Phys Radiation Oncology Physics The resolution of multileaf collimators (MLCs) is limited by their finite leaf width. A commercial package (HD‐270™) uses 3D couch translation and leaf adjustments to emulate smaller leaf widths. In this paper, we report on the commissioning of this feature using software testing, dial gauge measurements, and film dosimetry. We also identify a variety of limitations: software bugs and truncation artifacts, MLC leaf positioning uncertainties (random variations, systematic gantry dependence and backlash), and uncertainties in couch positioning. These reduce the capabilities of this implementation below that achievable theoretically. PACS numbers: 87.53.Kn, 87.53.Uv, 87.53.Xd John Wiley and Sons Inc. 2005-05-21 /pmc/articles/PMC5723476/ /pubmed/15940207 http://dx.doi.org/10.1120/jacmp.v6i2.2032 Text en © 2005 The Authors. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/3.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Radiation Oncology Physics
Drever, Laura
Dickof, Peter
Virtual micro MLC commissioning
title Virtual micro MLC commissioning
title_full Virtual micro MLC commissioning
title_fullStr Virtual micro MLC commissioning
title_full_unstemmed Virtual micro MLC commissioning
title_short Virtual micro MLC commissioning
title_sort virtual micro mlc commissioning
topic Radiation Oncology Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5723476/
https://www.ncbi.nlm.nih.gov/pubmed/15940207
http://dx.doi.org/10.1120/jacmp.v6i2.2032
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