Reproducibility assessment of commercial optically stimulated luminescence system in diagnostic X-ray beams

• Main Authors: Musa, Y., Hashim, S., Bradley, D. A., Karim, M. K. A., Hashim, A.
• Format: Article
• Published: Springer Netherlands 2017
• Subjects: QC Physics
• Online Access: http://eprints.utm.my/id/eprint/76539/; https://www.scopus.com/inward/record.uri?eid=2-s2.0-85031924794&doi=10.1007%2fs10967-017-5571-9&partnerID=40&md5=3706cb7f87ef5005d1805a9fc2368bf9
• Institution: Universiti Teknologi Malaysia

This study investigates the reproducibility of commercial optically stimulated luminescence (OSL) system at different X-ray beams in general radiography. The reader stability was evaluated at first and found to be within the accepted tolerance level of ± 10%. Henceforth, reproducibility of OSL dosimeters due to repeated readouts after single exposure were found to be between 1.0% (80 kV/20 mGy) and 5.9% (80 kV/10 mAs), while reproducibility in repeated irradiation of optically stimulated luminescence dosimeters (OSLDs) from the same batch (80 kV/8 mGy) was between 1.8 and 4.3%. After multiple readouts of OSLD, the OSL signal decreased by approximately − 0.4% per readout and − 5.4% per 10 sequential readouts. The reproducibility response demonstrates the suitability of the nanoDots OSLD for use in radiography.