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Diode‐based transmission detector for IMRT delivery monitoring: a validation study

The purpose of this work was to evaluate the potential of a new transmission detector for real‐time quality assurance of dynamic‐MLC‐based radiotherapy. The accuracy of detecting dose variation and static/dynamic MLC position deviations was measured, as well as the impact of the device on the radiat...

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Autores principales: Li, Taoran, Wu, Q. Jackie, Matzen, Thomas, Yin, Fang‐Fang, O'Daniel, Jennifer C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5874094/
https://www.ncbi.nlm.nih.gov/pubmed/27685115
http://dx.doi.org/10.1120/jacmp.v17i5.6204
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author Li, Taoran
Wu, Q. Jackie
Matzen, Thomas
Yin, Fang‐Fang
O'Daniel, Jennifer C.
author_facet Li, Taoran
Wu, Q. Jackie
Matzen, Thomas
Yin, Fang‐Fang
O'Daniel, Jennifer C.
author_sort Li, Taoran
collection PubMed
description The purpose of this work was to evaluate the potential of a new transmission detector for real‐time quality assurance of dynamic‐MLC‐based radiotherapy. The accuracy of detecting dose variation and static/dynamic MLC position deviations was measured, as well as the impact of the device on the radiation field (surface dose, transmission). Measured dose variations agreed with the known variations within 0.3%. The measurement of static and dynamic MLC position deviations matched the known deviations with high accuracy (0.7–1.2 mm). The absorption of the device was minimal ([Formula: see text]). The increased surface dose was small (1%–9%) but, when added to existing collimator scatter effects could become significant at large field sizes ([Formula: see text]). Overall the accuracy and speed of the device show good potential for real‐time quality assurance. PACS number(s): 87.55.Qr
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spelling pubmed-58740942018-04-02 Diode‐based transmission detector for IMRT delivery monitoring: a validation study Li, Taoran Wu, Q. Jackie Matzen, Thomas Yin, Fang‐Fang O'Daniel, Jennifer C. J Appl Clin Med Phys Radiation Oncology Physics The purpose of this work was to evaluate the potential of a new transmission detector for real‐time quality assurance of dynamic‐MLC‐based radiotherapy. The accuracy of detecting dose variation and static/dynamic MLC position deviations was measured, as well as the impact of the device on the radiation field (surface dose, transmission). Measured dose variations agreed with the known variations within 0.3%. The measurement of static and dynamic MLC position deviations matched the known deviations with high accuracy (0.7–1.2 mm). The absorption of the device was minimal ([Formula: see text]). The increased surface dose was small (1%–9%) but, when added to existing collimator scatter effects could become significant at large field sizes ([Formula: see text]). Overall the accuracy and speed of the device show good potential for real‐time quality assurance. PACS number(s): 87.55.Qr John Wiley and Sons Inc. 2016-09-08 /pmc/articles/PMC5874094/ /pubmed/27685115 http://dx.doi.org/10.1120/jacmp.v17i5.6204 Text en © 2016 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
Li, Taoran
Wu, Q. Jackie
Matzen, Thomas
Yin, Fang‐Fang
O'Daniel, Jennifer C.
Diode‐based transmission detector for IMRT delivery monitoring: a validation study
title Diode‐based transmission detector for IMRT delivery monitoring: a validation study
title_full Diode‐based transmission detector for IMRT delivery monitoring: a validation study
title_fullStr Diode‐based transmission detector for IMRT delivery monitoring: a validation study
title_full_unstemmed Diode‐based transmission detector for IMRT delivery monitoring: a validation study
title_short Diode‐based transmission detector for IMRT delivery monitoring: a validation study
title_sort diode‐based transmission detector for imrt delivery monitoring: a validation study
topic Radiation Oncology Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5874094/
https://www.ncbi.nlm.nih.gov/pubmed/27685115
http://dx.doi.org/10.1120/jacmp.v17i5.6204
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