Applicability of Glass Dosimeters for In-vivo Dosimetry in Brachytherapy

Sun Young Moon, Jaeman Son, Myonggeun Yoon, Eun Hee Jeang, Young Kyung Lim, Weon Kyu Chung, Dong Wook Kim

Research output: Contribution to journalArticle

Abstract

During brachytherapy, confirming the dose delivered is very important in order to prevent radiation-associated side effects. Therefore, we aimed to confirm the accuracy of dose delivery near the source by inserting glass dosimeters within the applicator. We created an alternative pelvic phantom with the same shape and internal structures as the usual patient. In addition, we created a tandem for insertion of the glass dosimeters and measured the dose near the source by inserting the glass dosimeters into the tandem and evaluating the accuracy of the dwell position and time through the dose near the source. Errors between the values obtained from the five glass dosimeters and the values from the treatment planning system were −6.27, −2.1, −4.18, 6.31, and −0.39%, respectively. The mean error was 3.85%. This value was acceptable considering that the error of the glass dosimeter itself is approximately 3%. Even though a complement of the applicator and the error calibration is required in order to apply this technique clinically, we believe that radiation accidents and overdoses can be prevented through in-vivo dosimetry using a glass dosimeter for brachytherapy.

Original languageEnglish
Pages (from-to)1320-1325
Number of pages6
JournalJournal of the Korean Physical Society
Volume72
Issue number11
DOIs
Publication statusPublished - 2018 Jun 1

Keywords

  • Brachytherapy
  • Glass dosimeter
  • In-vivo dosimetry
  • Patient dose

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Moon, S. Y., Son, J., Yoon, M., Jeang, E. H., Lim, Y. K., Chung, W. K., & Kim, D. W. (2018). Applicability of Glass Dosimeters for In-vivo Dosimetry in Brachytherapy. Journal of the Korean Physical Society, 72(11), 1320-1325. https://doi.org/10.3938/jkps.72.1320