Osborne, Keexia L.Nielsen, Cybil J.Bullock, John R.Jennings, S. Gregory2022-03-252022-03-252020-12Osborne, K. L., Nielsen, C. J., Bullock, J. R., & Jennings, S. G. (2020). A Comparison of Readings from Thermoluminescent Dosimeter Ring Badges Worn in Different Positions. Journal of Nuclear Medicine Technology, 48(4), 361–362. https://doi.org/10.2967/jnmt.120.243345https://hdl.handle.net/1805/28312Our purpose was to evaluate whether the position of a thermoluminescent dosimeter (TLD) crystal results in different exposure readings. Methods: Nine subjects wore 2 TLD badges (one facing inward, toward the palm, and one facing outward) for 2 mo. Both TLDs were worn on the middle finger of the dominant hand, with the inward-facing TLD placed at the bottom and the outward-facing TLD at the top. At the end of the first month, these TLDs were replaced with new ones for another month. Combined results from the badges for the 2 mo were recorded in millisieverts. A paired t test with 2-sample means was performed to compare the 2 positions in general nuclear medicine and PET/CT subjects, with an α of 0.05. Results: For all subjects and for the general nuclear medicine and PET/CT groups, mean exposure was greater for the inward-facing TLD. Conclusion: For a TLD worn on the dominant hand, extremity-exposure readings are maximized when the TLD faces inward.enPublisher Policycrystalpositionthermoluminescent dosimeterArticle