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Modified dose difference method for comparing dose distributions
The quantitative comparison of two‐dimensional dose distributions (e.g., calculated versus measured) has become a key issue in intensity‐modulated radiotherapy (IMRT) QA. We proposed a new evaluation method referred to as modified dose difference (MDdiff) evaluation. Hereinafter, features and effect...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5716408/ https://www.ncbi.nlm.nih.gov/pubmed/22402379 http://dx.doi.org/10.1120/jacmp.v13i2.3616 |
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author | Bak, Jino Choi, Jin Hwa Kim, Jae‐Sung Park, Suk Won |
author_facet | Bak, Jino Choi, Jin Hwa Kim, Jae‐Sung Park, Suk Won |
author_sort | Bak, Jino |
collection | PubMed |
description | The quantitative comparison of two‐dimensional dose distributions (e.g., calculated versus measured) has become a key issue in intensity‐modulated radiotherapy (IMRT) QA. We proposed a new evaluation method referred to as modified dose difference (MDdiff) evaluation. Hereinafter, features and effectiveness of the MDdiff evaluation method will be described. In this work, the formalism of MDdiff was defined by introducing a dimensionless parameter [Formula: see text]. A new formalism is compared to a gamma method, and the MDdiff and the gamma method are respectively applied to patient‐specific IMRT QA. The calculation of the evaluation of dose distributions was performed using a [Formula: see text] program. Evaluations were performed by counting the number of data points satisfying [Formula: see text]. The evaluation result of dose distributions using the MDdiff method had the same tendency as the evaluation result using the gamma evaluation method. The modified dose difference tool also provides a quantitative method for comparing two dose distributions like the gamma evaluation. Furthermore, many problems of gamma evaluation are resolved. PACS numbers: 87.55.km, 87.55.Qr |
format | Online Article Text |
id | pubmed-5716408 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-57164082018-04-02 Modified dose difference method for comparing dose distributions Bak, Jino Choi, Jin Hwa Kim, Jae‐Sung Park, Suk Won J Appl Clin Med Phys Radiation Oncology Physics The quantitative comparison of two‐dimensional dose distributions (e.g., calculated versus measured) has become a key issue in intensity‐modulated radiotherapy (IMRT) QA. We proposed a new evaluation method referred to as modified dose difference (MDdiff) evaluation. Hereinafter, features and effectiveness of the MDdiff evaluation method will be described. In this work, the formalism of MDdiff was defined by introducing a dimensionless parameter [Formula: see text]. A new formalism is compared to a gamma method, and the MDdiff and the gamma method are respectively applied to patient‐specific IMRT QA. The calculation of the evaluation of dose distributions was performed using a [Formula: see text] program. Evaluations were performed by counting the number of data points satisfying [Formula: see text]. The evaluation result of dose distributions using the MDdiff method had the same tendency as the evaluation result using the gamma evaluation method. The modified dose difference tool also provides a quantitative method for comparing two dose distributions like the gamma evaluation. Furthermore, many problems of gamma evaluation are resolved. PACS numbers: 87.55.km, 87.55.Qr John Wiley and Sons Inc. 2012-03-08 /pmc/articles/PMC5716408/ /pubmed/22402379 http://dx.doi.org/10.1120/jacmp.v13i2.3616 Text en © 2012 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 Bak, Jino Choi, Jin Hwa Kim, Jae‐Sung Park, Suk Won Modified dose difference method for comparing dose distributions |
title | Modified dose difference method for comparing dose distributions |
title_full | Modified dose difference method for comparing dose distributions |
title_fullStr | Modified dose difference method for comparing dose distributions |
title_full_unstemmed | Modified dose difference method for comparing dose distributions |
title_short | Modified dose difference method for comparing dose distributions |
title_sort | modified dose difference method for comparing dose distributions |
topic | Radiation Oncology Physics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5716408/ https://www.ncbi.nlm.nih.gov/pubmed/22402379 http://dx.doi.org/10.1120/jacmp.v13i2.3616 |
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