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Response of optically stimulated luminescence dosimeters subjected to x-rays in diagnostic energy range


Musa, Yahaya and Hashim, Suhairil and Abdul Karim, Muhammad Khalis and Bakar, K. A and Ang, W. C and Salehhon, Nasuha (2017) Response of optically stimulated luminescence dosimeters subjected to x-rays in diagnostic energy range. Journal of Physics: Conference Series, 851 (1). pp. 1-6. ISSN 1742-6588; ESSN: 1742-6596


The use of optically stimulated luminescence (OSL) for dosimetry applications has recently increased considerably due to availability of commercial OSL dosimeters (nanoDots) for clinical use. The OSL dosimeter has a great potential to be used in clinical dosimetry because of its prevailing advantages in both handling and application. However, utilising nanoDot OSLDs for dose measurement in diagnostic radiology can only be guaranteed when the performance and characteristics of the dosimeters are apposite. In the present work, we examined the response of commercially available nanoDot OSLD (Al2O3:C) subjected to X-rays in general radiography. The nanoDots response with respect to reproducibility, dose linearity and signal depletion were analysed using microStar reader (Landauer, Inc., Glenwood, IL). Irradiations were performed free-in-air using 70, 80 and 120 kV tube voltages and tube currents ranging from 10 – 100 mAs. The results showed that the nanoDots exhibit good linearity and reproducibility when subjected to diagnostic X-rays, with coefficient of variations (CV) ranging between 2.3% to 3.5% representing a good reproducibility. The results also indicated average of 1% signal reduction per readout. Hence, the nanoDots showed a promising potential for dose measurement in general X-ray procedure.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.1088/1742-6596/851/1/012001
Publisher: Institute of Physics Publishing
Keywords: Optically stimulated luminescence (OSL); OSL dosimeter
Depositing User: Mas Norain Hashim
Date Deposited: 29 Aug 2018 04:25
Last Modified: 29 Aug 2018 04:27
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1088/1742-6596/851/1/012001
URI: http://psasir.upm.edu.my/id/eprint/62973
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