Abstract
The purpose of this study was to determine the optimal wavelength for a polymer-gel dosimeter previously developed by our research groups; this was done through a spectrophotometric characterization of its dosimetric properties. A gel sample was irradiated with a 6-MV photon beam from a linear accelerator, and its response was spectrophotometrically analyzed. The absorbance, dose linearity, reproducibility, and dose-rate dependence of the dosimeter were evaluated at various wavelengths and doses. The absorbance of the polymer-gel dosimeter did not show any peak sensitivity within the studied range of wavelengths. For the range of doses studied, the best dose linearity was recorded, with an R2 of 0.9701 at a wavelength of 400 nm. The reproducibility of the results was excellent, and the error in the dose-rate dependence was within the range of ± 3%. The gel dosimeter displayed a very stable response, thus confirming the efficiency of this 3D dosimeter.
Original language | English |
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Pages (from-to) | 1194-1198 |
Number of pages | 5 |
Journal | Journal of the Korean Physical Society |
Volume | 62 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2013 Apr |
Bibliographical note
Funding Information:This work was supported by a Korea University Grant and this work was supported by the Technology Innovation Program, 10040362, Development of an Integrated Management Solution for Radiation Therapy, funded by the Ministry of Knowledge Economy (MKE, Korea).
Keywords
- Absorbance
- Dose linearity
- Optimal wavelength
- Polymer gel
- Spectrophotometer
ASJC Scopus subject areas
- General Physics and Astronomy