Assessing radiation exposure of fingers of PET/CTtechnologists during 18F-FDG procedures usingactive extremity dosimeters: A single-center study.

IF 1.4 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Journal of Radiological Protection Pub Date : 2024-12-16 DOI:10.1088/1361-6498/ad9f72
Vijitha Ramanathan, S P Gamage, Uiu Karunathilaka, Wmis Wickramasinghe, Ranga Tudugala
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Abstract

Extremity radiation exposure in nuclear medicine is a growing concern because it may surpass the maximum permissible dose of 500 mSv. This study aimed to assess the occupational nger dose received by technologists during the preparation and administration of 18F-FDG radiopharmaceuticals in PET-CT whole-body scan procedures. Fifty scans were selected, with one procedure excluded due to a high administered activity. The mean administered activity per scan was 207.2 41.8 MBq, with preparation and administration times averaging 1.44 1.30 minutes and 0.46 0.31 minutes, respectively. The technologist's mean total nger dose received during preparation and administration was 253.5 153.3 Sv per procedure. A signi cant positive correlation was found between the administered activity and occupational dose, with patient's body mass index, preparation time, and administration time also contributing to dose variation. Based on 703 PET-CT procedures conducted in 2022, the estimated occupational nger dose for a technologist was 178.2 mSv annually. This value is well below the ICRP's maximum permissible dose of 500 mSv. The ndings of this study have a signi cant impact on extremity dosimetry in nuclear medicine in Sri Lanka, as this is the rst study of its kind.

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核医学中的肢体辐照是一个日益受到关注的问题 ,因为它可能超过500 mSv的最大允许剂量。这项研究旨在评估技术人员在 PET-CT 全身扫描过程中准备和施用 18F-FDG 放射性药物时所接受的职业nger剂量。共选取了 50 次扫描,其中一次扫描因放射性活度过高而被排除在外。每次扫描的平均放射性活度为 207.2 41.8 MBq, 准备和给药时间平均分别为 1.44 1.30 分钟和 0.46 0.31 分钟。技术人员在制备和施用过程中平均每次接受的总纳格剂量为 253.5 153.3 希沃特。研究发现,给药活动与职业剂量之间存在显著的正相关关系,患者的体重指数、准备时间和给药时间也会导致剂量变化。根据2022年进行的703例PET-CT程序, 技术人员每年的职业纳格剂量估计为178.2毫希沃特。这个值远远低于国际放射防护委员会规定的最大允许剂量500毫西弗。这项研究的结果对斯里兰卡核医学的肢体剂量测定具有重要影响,因为这是首次开展此类研究。
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来源期刊
Journal of Radiological Protection
Journal of Radiological Protection 环境科学-公共卫生、环境卫生与职业卫生
CiteScore
2.60
自引率
26.70%
发文量
137
审稿时长
18-36 weeks
期刊介绍: Journal of Radiological Protection publishes articles on all aspects of radiological protection, including non-ionising as well as ionising radiations. Fields of interest range from research, development and theory to operational matters, education and training. The very wide spectrum of its topics includes: dosimetry, instrument development, specialized measuring techniques, epidemiology, biological effects (in vivo and in vitro) and risk and environmental impact assessments. The journal encourages publication of data and code as well as results.
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