Comparison of the BANGkit™ and the PRESAGE™ gel dosimeters for use with a CCD-based optical CT scanner

Kyung Hwan Chang, Suk Lee, Yuan Jie Cao, Jang Bo Shim, Ji Eun Lee, Nam Kwon Lee, Jung Ae Lee, Dae Sik Yang, Young Je Park, Won Sup Yoon, Chul Yong Kim, Sam Ju Cho, Sang Hoon Lee, Woo Chul Kim, Chul Kee Min, Kwang Hwan Cho, Hyun Do Huh

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We compared the basic characteristics of two commercially-available scattering gel (BANGkit™) and non-scattering gel (PRESAGE™) dosimeters with a spectrophotometer to investigate each device's dosimetric properties. The two types of gel dosimeters were spectrophotometrically analyzed. For each gel dosimeter, the absorbance, dose linearity, reproducibility, dose rate dependency, and oxygen effect were evaluated at various wavelengths and doses. The best dose linearities of the BANGkit™ and the PRESAGE™ gel dosimeters gave R2 values of 0.97 and 0.98 at wavelengths of 485 nm and 600 nm, respectively, over the range of doses. The BANGkit™ gel showed no peak sensitivity within the studied range of wavelengths whereas the PRESAGE™ gel demonstrated peak sensitivity at a wavelength of 630 nm. The reproducibilities and the dose-rate dependences of the two gel dosimeters were within the range of ± 2% and ± 3%, respectively. We have shown that the peak sensitivities of the two gel dosimeters were significantly different; the BANGkit™ gel showed no peak sensitivity within the studied range of wavelengths whereas the PRESAGE™ gel demonstrated a peak sensitivity at a wavelength of 630 nm. We have confirmed that the radiochromic gel dosimeter was appropriate for use with a CCD-based optical CT scanner.

Original languageEnglish
Pages (from-to)740-745
Number of pages6
JournalJournal of the Korean Physical Society
Volume64
Issue number5
DOIs
Publication statusPublished - 2014 Mar

Keywords

  • BANGkit™ gel dosimeter
  • Optical CT scanner
  • PRESAGE™ gel dosimeter
  • Radiological properties
  • Spectrophotometer

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Chang, K. H., Lee, S., Cao, Y. J., Shim, J. B., Lee, J. E., Lee, N. K., Lee, J. A., Yang, D. S., Park, Y. J., Yoon, W. S., Kim, C. Y., Cho, S. J., Lee, S. H., Kim, W. C., Min, C. K., Cho, K. H., & Huh, H. D. (2014). Comparison of the BANGkit™ and the PRESAGE™ gel dosimeters for use with a CCD-based optical CT scanner. Journal of the Korean Physical Society, 64(5), 740-745. https://doi.org/10.3938/jkps.64.740