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

Title
Clinical application of glass dosimeter for in vivo dose measurements of total body irradiation treatment technique
Authors
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.
Ewha Authors
이레나
SCOPUS Author ID
이레나scopus
Issue Date
2011
Journal Title
Radiation Measurements
ISSN
1350-4487JCR Link
Citation
vol. 46, no. 1, pp. 40 - 45
Indexed
SCI; SCIE; SCOPUS WOS 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. © 2010 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.radmeas.2010.08.013
Appears in Collections:
의과대학 > 의학과 > Journal papers
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