COMPARATIVE ANALYSIS OF DOSE SENSITIVITY OF THERMOLUMINESCENT DOSIMETER AND OPTICALLY STIMULATED LUMINESCENCE DOSIMETER AMONG RADIOGRAPHERS IN ENUGU STATE

ABSTRACT Thermoluminescent dosimeter and optically stimulated dosimeter in the research area is the most used personal dosimeters used by radiographers to monitor their radiation dose absorbed. Therefore, it is necessary to compare their sensitivity to radiations as the radiographers carry out their duty. The dosimeters readings of 5 radiographers in Enugu from July ,2023 to August, 2023 showed that the mean dose for the TLD and OSLd was 0.05mSv and 0.31 mSv, respectively. The total dose recorded by the tld was 0.25 and 1.55msv was the total dose recorded after two weeks of usage. The result of the research work showed that optically stimulated luminescent dosimeter measured higher radiation dose on each radiographer when compared with radiation doses measured by thermoluminescent dosimeter. From the results of the research, it agrees with the results got from Omaima Essad et al., Rani M. Al-Senan et al., Stephen et al., Zidouh et al., Branets et al., Issa R.H., Paul A. Jursinic, Yukihara et al., Dunn et al., Wesolowska et al., Raras et al., and Kerns et al. which stated that optically stimulated dosimeter is more sensitive than thermoluminescent dosimeter. It is also inferred from the data that the radiographer identified by the Chip id, NOHE 1, was exposed to the highest amount of radiation amongst others when using the optically stimulated dosimeter dose to compare. This may have been because of factors like poor radiation protection or improper handling by the radiographer.