Dosimetric errors of TPS calculations without correction for heterogeneity - A study using CIRS thorax phantom

Supriyanto, Sugiyantari, W. E. Wibowo, K. Y. Cheung, Djarwani Soeharso Soejoko

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The magnitude of the error in dose calculation using a commercial treatment planning system (TPS) without correction for tissue heterogeneity was assessed. A CIRS Thorax anthropomorphic phantom was used for the study. The phantom was CT scanned, treatment planned and treated with 10 MV photon beams. Dose at points of interested in the phantom was measured and compared with TPS calculation. Significant discrepancies of up to 8% between calculated and measured doses were observed. The results of our experiment indicate that treatment planning with TPS without correction for tissue heterogeneity should be avoided.

Original languageEnglish
Title of host publicationWorld Congress on Medical Physics and Biomedical Engineering
Subtitle of host publicationRadiation Oncology
Pages628-630
Number of pages3
Edition1
DOIs
Publication statusPublished - 1 Dec 2009
EventWorld Congress on Medical Physics and Biomedical Engineering: Radiation Oncology - Munich, Germany
Duration: 7 Sep 200912 Sep 2009

Publication series

NameIFMBE Proceedings
Number1
Volume25
ISSN (Print)1680-0737

Conference

ConferenceWorld Congress on Medical Physics and Biomedical Engineering: Radiation Oncology
Country/TerritoryGermany
CityMunich
Period7/09/0912/09/09

Keywords

  • Heterogeneity effects
  • Ionization chamber measurement
  • TPS errors

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