Cargando…
Algorithm for correcting optimization convergence errors in Eclipse
IMRT plans generated in Eclipse use a fast algorithm to evaluate dose for optimization and a more accurate algorithm for a final dose calculation, the Analytical Anisotropic Algorithm. The use of a fast optimization algorithm introduces optimization convergence errors into an IMRT plan. Eclipse has...
Autores principales: | , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2009
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5720570/ https://www.ncbi.nlm.nih.gov/pubmed/19918234 http://dx.doi.org/10.1120/jacmp.v10i4.3061 |
_version_ | 1783284677669289984 |
---|---|
author | Zacarias, Albert S. Mills, Michael D. |
author_facet | Zacarias, Albert S. Mills, Michael D. |
author_sort | Zacarias, Albert S. |
collection | PubMed |
description | IMRT plans generated in Eclipse use a fast algorithm to evaluate dose for optimization and a more accurate algorithm for a final dose calculation, the Analytical Anisotropic Algorithm. The use of a fast optimization algorithm introduces optimization convergence errors into an IMRT plan. Eclipse has a feature where optimization may be performed on top of an existing base plan. This feature allows for the possibility of arriving at a recursive solution to optimization that relies on the accuracy of the final dose calculation algorithm and not the optimizer algorithm. When an IMRT plan is used as a base plan for a second optimization, the second optimization can compensate for heterogeneity and modulator errors in the original base plan. Plans with the same field arrangement as the initial base plan may be added together by adding the initial plan optimal fluence to the dose correcting plan optimal fluence. A simple procedure to correct for optimization errors is presented that may be implemented in the Eclipse treatment planning system, along with an Excel spreadsheet to add optimized fluence maps together. PACS number: 87.53.Bn, 87.56.By |
format | Online Article Text |
id | pubmed-5720570 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-57205702018-04-02 Algorithm for correcting optimization convergence errors in Eclipse Zacarias, Albert S. Mills, Michael D. J Appl Clin Med Phys Technical Notes IMRT plans generated in Eclipse use a fast algorithm to evaluate dose for optimization and a more accurate algorithm for a final dose calculation, the Analytical Anisotropic Algorithm. The use of a fast optimization algorithm introduces optimization convergence errors into an IMRT plan. Eclipse has a feature where optimization may be performed on top of an existing base plan. This feature allows for the possibility of arriving at a recursive solution to optimization that relies on the accuracy of the final dose calculation algorithm and not the optimizer algorithm. When an IMRT plan is used as a base plan for a second optimization, the second optimization can compensate for heterogeneity and modulator errors in the original base plan. Plans with the same field arrangement as the initial base plan may be added together by adding the initial plan optimal fluence to the dose correcting plan optimal fluence. A simple procedure to correct for optimization errors is presented that may be implemented in the Eclipse treatment planning system, along with an Excel spreadsheet to add optimized fluence maps together. PACS number: 87.53.Bn, 87.56.By John Wiley and Sons Inc. 2009-10-14 /pmc/articles/PMC5720570/ /pubmed/19918234 http://dx.doi.org/10.1120/jacmp.v10i4.3061 Text en © 2009 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 | Technical Notes Zacarias, Albert S. Mills, Michael D. Algorithm for correcting optimization convergence errors in Eclipse |
title | Algorithm for correcting optimization convergence errors in Eclipse |
title_full | Algorithm for correcting optimization convergence errors in Eclipse |
title_fullStr | Algorithm for correcting optimization convergence errors in Eclipse |
title_full_unstemmed | Algorithm for correcting optimization convergence errors in Eclipse |
title_short | Algorithm for correcting optimization convergence errors in Eclipse |
title_sort | algorithm for correcting optimization convergence errors in eclipse |
topic | Technical Notes |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5720570/ https://www.ncbi.nlm.nih.gov/pubmed/19918234 http://dx.doi.org/10.1120/jacmp.v10i4.3061 |
work_keys_str_mv | AT zacariasalberts algorithmforcorrectingoptimizationconvergenceerrorsineclipse AT millsmichaeld algorithmforcorrectingoptimizationconvergenceerrorsineclipse |