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Survey of patient‐specific quality assurance practice for IMRT and VMAT
A first‐time survey across 15 cancer centers in Ontario, Canada, on the current practice of patient‐specific quality assurance (PSQA) for intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) delivery was conducted. The objectives were to assess the current state o...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8292698/ https://www.ncbi.nlm.nih.gov/pubmed/34145732 http://dx.doi.org/10.1002/acm2.13294 |
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author | Chan, Gordon H. Chin, Lee C. L. Abdellatif, Ady Bissonnette, Jean‐Pierre Buckley, Lesley Comsa, Daria Granville, Dal King, Jenna Rapley, Patrick L. Vandermeer, Aaron |
author_facet | Chan, Gordon H. Chin, Lee C. L. Abdellatif, Ady Bissonnette, Jean‐Pierre Buckley, Lesley Comsa, Daria Granville, Dal King, Jenna Rapley, Patrick L. Vandermeer, Aaron |
author_sort | Chan, Gordon H. |
collection | PubMed |
description | A first‐time survey across 15 cancer centers in Ontario, Canada, on the current practice of patient‐specific quality assurance (PSQA) for intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) delivery was conducted. The objectives were to assess the current state of PSQA practice, identify areas for potential improvement, and facilitate the continued improvement in standardization, consistency, efficacy, and efficiency of PSQA regionally. The survey asked 40 questions related to PSQA practice for IMRT/VMAT delivery. The questions addressed PSQA policy and procedure, delivery log evaluation, instrumentation, measurement setup and methodology, data analysis and interpretation, documentation, process, failure modes, and feedback. The focus of this survey was on PSQA activities related to routine IMRT/VMAT treatments on conventional linacs, including stereotactic body radiation therapy but excluding stereotactic radiosurgery. The participating centers were instructed to submit answers that reflected the collective view or opinion of their department and represented the most typical process practiced. The results of the survey provided a snapshot of the current state of PSQA practice in Ontario and demonstrated considerable variations in the practice. A large majority (80%) of centers performed PSQA measurements on all VMAT plans. Most employed pseudo‐3D array detectors with a true composite (TC) geometry. No standard approach was found for stopping or reducing frequency of measurements. The sole use of delivery log evaluation was not widely implemented, though most centers expressed interest in adopting this technology. All used the Gamma evaluation method for analyzing PSQA measurements; however, no universal approach was reported on how Gamma evaluation and pass determination criteria were determined. All or some PSQA results were reviewed regularly in two‐thirds of the centers. Planning related issues were considered the most frequent source for PSQA failures (40%), whereas the most frequent course of action for a failed PSQA was to review the result and decide whether to proceed to treatment. |
format | Online Article Text |
id | pubmed-8292698 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-82926982021-07-22 Survey of patient‐specific quality assurance practice for IMRT and VMAT Chan, Gordon H. Chin, Lee C. L. Abdellatif, Ady Bissonnette, Jean‐Pierre Buckley, Lesley Comsa, Daria Granville, Dal King, Jenna Rapley, Patrick L. Vandermeer, Aaron J Appl Clin Med Phys Radiation Oncology Physics A first‐time survey across 15 cancer centers in Ontario, Canada, on the current practice of patient‐specific quality assurance (PSQA) for intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) delivery was conducted. The objectives were to assess the current state of PSQA practice, identify areas for potential improvement, and facilitate the continued improvement in standardization, consistency, efficacy, and efficiency of PSQA regionally. The survey asked 40 questions related to PSQA practice for IMRT/VMAT delivery. The questions addressed PSQA policy and procedure, delivery log evaluation, instrumentation, measurement setup and methodology, data analysis and interpretation, documentation, process, failure modes, and feedback. The focus of this survey was on PSQA activities related to routine IMRT/VMAT treatments on conventional linacs, including stereotactic body radiation therapy but excluding stereotactic radiosurgery. The participating centers were instructed to submit answers that reflected the collective view or opinion of their department and represented the most typical process practiced. The results of the survey provided a snapshot of the current state of PSQA practice in Ontario and demonstrated considerable variations in the practice. A large majority (80%) of centers performed PSQA measurements on all VMAT plans. Most employed pseudo‐3D array detectors with a true composite (TC) geometry. No standard approach was found for stopping or reducing frequency of measurements. The sole use of delivery log evaluation was not widely implemented, though most centers expressed interest in adopting this technology. All used the Gamma evaluation method for analyzing PSQA measurements; however, no universal approach was reported on how Gamma evaluation and pass determination criteria were determined. All or some PSQA results were reviewed regularly in two‐thirds of the centers. Planning related issues were considered the most frequent source for PSQA failures (40%), whereas the most frequent course of action for a failed PSQA was to review the result and decide whether to proceed to treatment. John Wiley and Sons Inc. 2021-06-19 /pmc/articles/PMC8292698/ /pubmed/34145732 http://dx.doi.org/10.1002/acm2.13294 Text en © 2021 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals LLC on behalf of American Association of Physicists in Medicine. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Radiation Oncology Physics Chan, Gordon H. Chin, Lee C. L. Abdellatif, Ady Bissonnette, Jean‐Pierre Buckley, Lesley Comsa, Daria Granville, Dal King, Jenna Rapley, Patrick L. Vandermeer, Aaron Survey of patient‐specific quality assurance practice for IMRT and VMAT |
title | Survey of patient‐specific quality assurance practice for IMRT and VMAT |
title_full | Survey of patient‐specific quality assurance practice for IMRT and VMAT |
title_fullStr | Survey of patient‐specific quality assurance practice for IMRT and VMAT |
title_full_unstemmed | Survey of patient‐specific quality assurance practice for IMRT and VMAT |
title_short | Survey of patient‐specific quality assurance practice for IMRT and VMAT |
title_sort | survey of patient‐specific quality assurance practice for imrt and vmat |
topic | Radiation Oncology Physics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8292698/ https://www.ncbi.nlm.nih.gov/pubmed/34145732 http://dx.doi.org/10.1002/acm2.13294 |
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