Monte carlo simulation of bony heterogeneity effects on dose profile for small irradiation field in radiotherapy
In the radiotherapy treatment planning of a lesion located in the head region with small field radiation beams, the heterogeneity corrections play an important role. In this work, we investigated the influence of a bony heterogeneity on dose profile inside a soft tissue phantom containing a bony mat...
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Published in | PloS one Vol. 5; no. 5; p. e10466 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Public Library of Science
03.05.2010
Public Library of Science (PLoS) |
Subjects | |
Online Access | Get full text |
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Summary: | In the radiotherapy treatment planning of a lesion located in the head region with small field radiation beams, the heterogeneity corrections play an important role. In this work, we investigated the influence of a bony heterogeneity on dose profile inside a soft tissue phantom containing a bony material. PDD curves were obtained by simulation using the Monte Carlo code EGSnrc and employing Eclipse(R) treatment planning system algorithms (Batho, Modified Batho, Equivalent TAR and Anisotropic Analytic Algorithm) for a 15 MV photon beam and field sizes of 2x2 and 10x10 cm(2). The Equivalent TAR method exhibited better agreement with Monte Carlo simulations for the 2x2 cm(2) field size. The magnitude of the effect on PDD due to the bony heterogeneity for 1x1, 2x2 and 10x10 cm(2) field sizes increases to 10, 5 and 3%, respectively. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Conceived and designed the experiments: SCC VGLA DVB. Analyzed the data: SCC VGLA LARdR DVB. Contributed reagents/materials/analysis tools: SCC VGLA LARdR LTC AF. Wrote the paper: SCC LARdR. |
ISSN: | 1932-6203 1932-6203 |
DOI: | 10.1371/journal.pone.0010466 |