Preliminary dose calibration results using a TENOMAG polymer gel dosimeter and optical CT (VISTA™)

Suk Lee, Jang Bo Shim, Kyoung Hwan Chang, Yuanjie Cao, Jaeyoun Yi, Jinwoo Park, Sam Ju Cho, Sang Hoon Lee, Hyundo Huh, Kwang Hwan Cho, Chul Kee Min, Dae-Sik Yang, Young Je Park, Won Sup Yoon, Chul Yong Kim

Research output: Contribution to journalArticle

Abstract

We present a preliminary result of dose calibration for 3D dose evaluation using gel dosimetry in radiotherapy. In this work, we measured the percentage depth dose (PDD) and dose linearity using a normoxic polymer gel dosimeter (TENOMAG) and a commercial cone-beam optical CT scanner (VISTA™, Modus Medical Devices, Inc., London, ON, Canada). We confirmed that the PDD measured for 1 and 2 Gy had a build up region at 0.4 cm depth. However, the PDD measured for 3 and 4 Gy had not a build up region. In all cases, the PDD has not greatly decreased with depth above 4 cm depth. Moreover we confirmed that the optical density proportionally increased with dose at 1, 1.5 and 2 cm depth, while the response has not greatly increased with dose for other depths. In this study, we confirmed that we will be able to perform the dose calibration using optical density obtained from a TENOMAG gel data scanned with an optical CT scanner.

Original languageEnglish
Article number012042
Pages (from-to)189-192
Number of pages4
JournalJournal of Physics: Conference Series
Volume250
DOIs
Publication statusPublished - 2010 Dec 30

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Lee, S., Shim, J. B., Chang, K. H., Cao, Y., Yi, J., Park, J., Cho, S. J., Lee, S. H., Huh, H., Cho, K. H., Min, C. K., Yang, D-S., Park, Y. J., Yoon, W. S., & Kim, C. Y. (2010). Preliminary dose calibration results using a TENOMAG polymer gel dosimeter and optical CT (VISTA™). Journal of Physics: Conference Series, 250, 189-192. [012042]. https://doi.org/10.1088/1742-6596/250/1/012042