Radiation Dose to Technologists per Nuclear Medicine Examination and Estimation of Annual Dose

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dc.authoridDemir, Mustafa/0000-0002-9813-1628
dc.authoridBAYRAM, Tuncay/0000-0003-3704-0818
dc.authoridSONMEZ, BIRCAN/0000-0001-5948-7923
dc.contributor.authorBayram, Tuncay
dc.contributor.authorYilmaz, A. Hakan
dc.contributor.authorDemir, Mustafa
dc.contributor.authorSonmez, Bircan
dc.date.accessioned2025-03-23T19:26:46Z
dc.date.available2025-03-23T19:26:46Z
dc.date.issued2011
dc.departmentSinop Üniversitesi
dc.description.abstractConventional diagnostic nuclear medicine applications have been continuously increasing in most nuclear medicine departments in Turkey, but to our knowledge no one has studied the doses to technologists who perform nuclear medicine procedures. Most nuclear medicine laboratories do not have separate control rooms for technologists, who are quite close to the patient during data acquisition. Technologists must therefore stay behind lead shields while performing their task if they are to reduce the radiation dose received. The aim of this study was to determine external radiation doses to technologists during nuclear medicine procedures with and without a lead shield. Another aim was to investigate the occupational annual external radiation doses to Turkish technologists. Methods: This study used a Geiger-Mu ller detector to measure dose rates to technologists at various distances from patients (0.25, 0.50, 1, and 2 m and behind a lead shield) and determined the average time spent by technologists at these distances. Deep-dose equivalents to technologists were obtained. The following conventional nuclear medicine procedures were considered: thyroid scintigraphy performed using Tc-99m pertechnetate, whole-body bone scanning performed using Tc-99m-methylene diphosphonate, myocardial perfusion scanning performed using Tc-99m-methoxyisobutyl isonitrile, and Tl-201 (thallous chloride) and renal scanning performed using Tc-99m-dimercaptosuccinic acid. Results: The measured deep-dose equivalent to technologists per procedure was within the range of 0.13 +/- 0.05 to 0.43 +/- 0.17 mu Sv using a lead shield and 0.21 +/- 0.07 to 1.01 +/- 0.46 mu Sv without a lead shield. Also, the annual individual dose to a technologist performing only a particular scintigraphic procedure throughout a year was estimated. Conclusion: For a total of 95 clinical cases (71 patients), effective external radiation doses to technologists were found to be within the permissible levels. This study showed that a 2-mm lead shield markedly reduced the external dose to technologists. The doses to technologists varied significantly for different diagnostic applications. Consequently, the estimated annual dose to a technologist performing only a particular scintigraphic procedure is very different from one type of procedure to another. The results of this study should help in determining the rotation time of technologists in different procedures and differences in their individual techniques.
dc.identifier.doi10.2967/jnmt.110.080358
dc.identifier.endpage59
dc.identifier.issn0091-4916
dc.identifier.issn1535-5675
dc.identifier.issue1
dc.identifier.pmid21321251
dc.identifier.scopus2-s2.0-79953686213
dc.identifier.scopusqualityQ3
dc.identifier.startpage55
dc.identifier.urihttps://doi.org/10.2967/jnmt.110.080358
dc.identifier.urihttps://hdl.handle.net/11486/4777
dc.identifier.volume39
dc.identifier.wosWOS:000439074900012
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherSoc Nuclear Medicine Inc
dc.relation.ispartofJournal of Nuclear Medicine Technology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250323
dc.subjectradiation protection
dc.subjectoccupational dose
dc.subjectnuclear medicine technologist
dc.subjectshielding
dc.titleRadiation Dose to Technologists per Nuclear Medicine Examination and Estimation of Annual Dose
dc.typeArticle

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