Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Evaluation of Annual Staff Doses and Radiation Shielding Efficiencies of Thyroid Shield and Lead Apron during Preparation and Administration of I-131, Kr-81, and Tc-99m-Labeled Radiopharmaceuticals

Sat Sep 23 17:21:03 2023

(2022) Evaluation of Annual Staff Doses and Radiation Shielding Efficiencies of Thyroid Shield and Lead Apron during Preparation and Administration of I-131, Kr-81, and Tc-99m-Labeled Radiopharmaceuticals. Journal of Medical Signals & Sensors. pp. 90-94. ISSN 2228-7477

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Official URL: <Go to ISI>://WOS:000923455800012

Abstract

Nuclear medicine technicians would receive unavoidable exposures during the preparation and administration of radiopharmaceuticals. Based on the staff dose monitoring, the dose reduction efficiencies of the radiation protection shields and the need to implement additional strategies to reduce the staff doses could be evaluated. In this study, medical staff doses during the preparation and administration of Tc-99 m, I-131, and Kr-81 radiopharmaceuticals were evaluated. The dose reduction efficiencies of the lead apron and thyroid shield were also investigated. GR-207 thermoluminescent dosimeter (TLD) chips were used for quantifying the medical staff doses. The occupational dose magnitudes were determined in five organs at risk including eye lens, thyroid, fingers, chest, and gonads. TLDs were located under and over the protective shields for evaluating the dose reduction efficiencies of the lead apron and thyroid shield. The occupational doses were normalized to the activities used in the working shifts. During preparation and injection of Tc-99 m radiopharmaceutical, the average annual doses were higher in the chest (4.49 mGy) and eye lenses (4 mGy). For I-131 radiopharmaceutical, the average annual doses of the point-finger (15.8 mGy) and eye lenses (1.23 mGy) were significantly higher than other organs. During the preparation and administration of Kr-81, the average annual doses of the point-finger (0.65 mGy) and chest (0.44 mGy) were higher. The significant dose reductions were achieved using the lead apron and thyroid shield. The radiation protection shields and minimum contact with the radioactive sources, including patients, are recommended to reduce the staff doses.

Item Type: Article
Creators:
CreatorsEmail
Khalili, N.UNSPECIFIED
Zakariaee, S. S.UNSPECIFIED
Gharebaghi, E. J.UNSPECIFIED
Salehi, Y.UNSPECIFIED
Changizi, V.UNSPECIFIED
Keywords: Annual staff doses lead apron nuclear medicine occupational dose thermoluminescent dosimeter thyroid shield nuclear-medicine occupational-exposure workers rates Engineering
Divisions:
Page Range: pp. 90-94
Journal or Publication Title: Journal of Medical Signals & Sensors
Journal Index: ISI
Volume: 12
Number: 1
Identification Number: https://doi.org/10.4103/jmss.JMSS₄₅₂₀
ISSN: 2228-7477
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/4189

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