Reproducibility study of normoxic polyacrylamide gel (nPAG) dosimeters

Giuliana Russo; Jan Vandecasteele; Tom Vercauteren; Salvatore De Pasquale; Yves De Deene

doi:10.1088/1742-6596/164/1/012010

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 journal › Article › peer-review

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 language	English
Article number	012010
Pages (from-to)	1-5
Number of pages	5
Journal	Journal of Physics: Conference Series
Volume	164
DOIs	https://doi.org/10.1088/1742-6596/164/1/012010
Publication status	Published - 2009
Externally published	Yes

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10.1088/1742-6596/164/1/012010

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title = "Reproducibility study of normoxic polyacrylamide gel (nPAG) dosimeters",

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.",

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AU - Russo, Giuliana

AU - Vandecasteele, Jan

AU - Vercauteren, Tom

AU - De Pasquale, Salvatore

AU - De Deene, Yves

PY - 2009

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AB - 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.

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Reproducibility study of normoxic polyacrylamide gel (nPAG) dosimeters

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