Reproducibility study of normoxic polyacrylamide gel (nPAG) dosimeters

Giuliana Russo*, Jan Vandecasteele, Tom Vercauteren, Salvatore De Pasquale, Yves De Deene

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this study, the overall accuracy of normoxic polyacrylamide gel (nPAG) dosimeters is considered. Different badges of nPAG are fabricated, poured in containers of glass and Barex" and irradiated with a 6MV square photon beam. The polymer gel dosimeters were read out using MRI. The overall reproducibility and accuracy of nPAG gel dosimeters was determined by comparison with depth-dose profiles acquired with a Pin Point ionization chamber. Additionally, the effect of the container wall on the depth-dose profile and the effect of temperature changes before and after irradiation on the R2-dose response have been investigated. The average standard deviation and maximum deviation between 8 gel-measured depth-dose profiles and a depth-dose profile measured with an ionization chamber amounted to 0.543 Gy (2.5%) and 2.579 Gy (11.7%) respectively.

Original languageEnglish
Article number012010
Pages (from-to)1-5
Number of pages5
JournalJournal of Physics: Conference Series
Volume164
DOIs
Publication statusPublished - 2009
Externally publishedYes

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