Clinical application of glass dosimeter for in vivo dose measurements of total body irradiation treatment technique

Jeong Eun Rah, Ui Jung Hwang, Hojin Jeong, Sang Yeob Lee, Doo Hyun Lee, Dong Ho Shin, Myonggeun Yoon, Se Byeong Lee, Rena Lee, Sung Yong Park

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The commercially available glass dosimeter (model GD-301) was investigated for its dosimetric characteristics, in order to evaluate its use for in vivo dosimetry. We specifically assessed overall precision of dosimetric dose data in patients who received treatment with the total body irradiation (TBI). Uniformity obtained in this study was within 1.2% (1 SD). The dose-response was linear in the range of 0.5-10 Gy with R of 0.999. Dose rate, SSD, field size, angular and energy dependence were found to be within 3.0%. In vivo skin dosimetry for TBI was performed for 3 patients. For all patients, the glass dosimeter was exposed and measured dose recorded for one fraction in addition to conventional used TLD and MOSFET. Overall uncertainty of the glass dosimeter for in vivo dose measurement was estimated at 2.4% (68.3% confidence level). The measured doses of the glass dosimeter were well within ±5.0% of the prescription dose at all sites expect mediastinum of one patient, for which it is within ±5.7%. Agreement of measured doses between glass dosimeter and TLD, MOSFET was within ±6.3% and ±6.6%, respectively. Results show that the glass dosimeter can be used as an accurate and reproducible dosimeter for TBI treatment skin dose measurements. The glass dosimeter is a practical alternative to TLD or MOSFET as an in vivo dosimeter.

Original languageEnglish
Pages (from-to)40-45
Number of pages6
JournalRadiation Measurements
Volume46
Issue number1
DOIs
Publication statusPublished - 2011 Jan
Externally publishedYes

Keywords

  • Glass dosimeter
  • In vivo dosimetry
  • MOSFET
  • TBI (total body irradiation)
  • TLD

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

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  • Cite this

    Rah, J. E., Hwang, U. J., Jeong, H., Lee, S. Y., Lee, D. H., Shin, D. H., Yoon, M., Lee, S. B., Lee, R., & Park, S. Y. (2011). Clinical application of glass dosimeter for in vivo dose measurements of total body irradiation treatment technique. Radiation Measurements, 46(1), 40-45. https://doi.org/10.1016/j.radmeas.2010.08.013