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Algorithm for an automatic treatment planning system using a single‐arc VMAT for prostate cancer

Optimization process in treatment planning for intensity‐modulated radiation therapy varies with the treatment planner. Therefore, a large variation in the quality of dose distribution is usually observed. To reduce variation, an automatic optimizing toolkit was developed for the Monaco treatment pl...

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Autores principales: Kodama, Takumi, Kudo, Shigehiro, Hatanaka, Shogo, Hariu, Masatsugu, Shimbo, Munefumi, Takahashi, Takeo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8664139/
https://www.ncbi.nlm.nih.gov/pubmed/34623022
http://dx.doi.org/10.1002/acm2.13442
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author Kodama, Takumi
Kudo, Shigehiro
Hatanaka, Shogo
Hariu, Masatsugu
Shimbo, Munefumi
Takahashi, Takeo
author_facet Kodama, Takumi
Kudo, Shigehiro
Hatanaka, Shogo
Hariu, Masatsugu
Shimbo, Munefumi
Takahashi, Takeo
author_sort Kodama, Takumi
collection PubMed
description Optimization process in treatment planning for intensity‐modulated radiation therapy varies with the treatment planner. Therefore, a large variation in the quality of dose distribution is usually observed. To reduce variation, an automatic optimizing toolkit was developed for the Monaco treatment planning system (Elekta AB, Stockholm, Sweden) for prostate cancer using volumetric‐modulated arc therapy (VMAT). This toolkit was able to create plans automatically. However, most plans needed two arcs per treatment to ensure the dose coverage for targets. For prostate cancer, providing a plan with a single arc was advisable in clinical practice because intrafraction motion management must be considered to irradiate accurately. The purpose of this work was to develop an automatic treatment planning system with a single arc per treatment for prostate cancer using VMAT. We designed the new algorithm for the automatic treatment planning system to use one arc per treatment for prostate cancer in Monaco. We constructed the system in two main steps: (1) Determine suitable cost function parameters for each case before optimization, and (2) repeat the calculation and optimization until the conditions for dose indices are fulfilled. To evaluate clinical suitability, the plan quality between manual planning and the automatic planning system was compared. Our system created the plans automatically in all patients within a few iterations. Statistical differences between the plans were not observed for the target and organ at risk. It created the plans with no human input other than the initial template setting and system initiation. This system offers improved efficiency in running the treatment planning system and human resources while ensuring high‐quality outputs.
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spelling pubmed-86641392021-12-21 Algorithm for an automatic treatment planning system using a single‐arc VMAT for prostate cancer Kodama, Takumi Kudo, Shigehiro Hatanaka, Shogo Hariu, Masatsugu Shimbo, Munefumi Takahashi, Takeo J Appl Clin Med Phys Radiation Oncology Physics Optimization process in treatment planning for intensity‐modulated radiation therapy varies with the treatment planner. Therefore, a large variation in the quality of dose distribution is usually observed. To reduce variation, an automatic optimizing toolkit was developed for the Monaco treatment planning system (Elekta AB, Stockholm, Sweden) for prostate cancer using volumetric‐modulated arc therapy (VMAT). This toolkit was able to create plans automatically. However, most plans needed two arcs per treatment to ensure the dose coverage for targets. For prostate cancer, providing a plan with a single arc was advisable in clinical practice because intrafraction motion management must be considered to irradiate accurately. The purpose of this work was to develop an automatic treatment planning system with a single arc per treatment for prostate cancer using VMAT. We designed the new algorithm for the automatic treatment planning system to use one arc per treatment for prostate cancer in Monaco. We constructed the system in two main steps: (1) Determine suitable cost function parameters for each case before optimization, and (2) repeat the calculation and optimization until the conditions for dose indices are fulfilled. To evaluate clinical suitability, the plan quality between manual planning and the automatic planning system was compared. Our system created the plans automatically in all patients within a few iterations. Statistical differences between the plans were not observed for the target and organ at risk. It created the plans with no human input other than the initial template setting and system initiation. This system offers improved efficiency in running the treatment planning system and human resources while ensuring high‐quality outputs. John Wiley and Sons Inc. 2021-10-08 /pmc/articles/PMC8664139/ /pubmed/34623022 http://dx.doi.org/10.1002/acm2.13442 Text en © 2021 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, LLC on behalf of The 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
Kodama, Takumi
Kudo, Shigehiro
Hatanaka, Shogo
Hariu, Masatsugu
Shimbo, Munefumi
Takahashi, Takeo
Algorithm for an automatic treatment planning system using a single‐arc VMAT for prostate cancer
title Algorithm for an automatic treatment planning system using a single‐arc VMAT for prostate cancer
title_full Algorithm for an automatic treatment planning system using a single‐arc VMAT for prostate cancer
title_fullStr Algorithm for an automatic treatment planning system using a single‐arc VMAT for prostate cancer
title_full_unstemmed Algorithm for an automatic treatment planning system using a single‐arc VMAT for prostate cancer
title_short Algorithm for an automatic treatment planning system using a single‐arc VMAT for prostate cancer
title_sort algorithm for an automatic treatment planning system using a single‐arc vmat for prostate cancer
topic Radiation Oncology Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8664139/
https://www.ncbi.nlm.nih.gov/pubmed/34623022
http://dx.doi.org/10.1002/acm2.13442
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