Additional dose constraints for analytical beam weighting optimization in IMRT

This work presents an improvement to an algorithm for analytical beam weighting optimization where a flexible objective function, which considers ‘importance factors’ for each anatomical region and ‘allowed deviations’ from the prescribed dose, is defined. This upgrading allows forcing the mean valu...

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Bibliographic Details
Published inRadiotherapy and oncology Vol. 75; no. 2; pp. 224 - 226
Main Authors Arráns, Rafael, Gallardo, María Isabel, Roselló, Joan, Sánchez-Doblado, Francisco
Format Journal Article
LanguageEnglish
Published Ireland Elsevier Ireland Ltd 01.05.2005
Subjects
Algorithms
Beam segmentation
Class solution
Dose Fractionation
Humans
Intensity-modulated radiotherapy
Lagrange multipliers
Models, Theoretical
Neoplasms - radiotherapy
Radiation therapy optimization
Radiotherapy - methods
Radiation therapy optimization
Intensity-modulated radiotherapy
Lagrange multipliers
Class solution
Beam segmentation
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Summary:This work presents an improvement to an algorithm for analytical beam weighting optimization where a flexible objective function, which considers ‘importance factors’ for each anatomical region and ‘allowed deviations’ from the prescribed dose, is defined. This upgrading allows forcing the mean value of the dose distribution to be the desired value, by using Lagrange multipliers. A real case is presented to show the effect of this change.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0167-8140
1879-0887
DOI:10.1016/j.radonc.2005.03.014