Evangelista Victor L O, Correia Paula D, Fuzato Fernanda Q, Maschio Alessa, Cruz Felipe B, Santos William S, Perini Ana P, Neves Lucio P
Institute of Physics, Federal University of Uberlândia, Uberlândia, MG, Brazil; Graduate Program in Biomedical Engeneering, FEELT, Federal University of Uberlândia, Uberlândia, MG, Brazil.
Graduate Program in Biomedical Engeneering, FEELT, Federal University of Uberlândia, Uberlândia, MG, Brazil; UMC Oncoclínicas, Uberlândia, MG, Brazil.
Appl Radiat Isot. 2025 Nov;225:112021. doi: 10.1016/j.apradiso.2025.112021. Epub 2025 Jul 1.
Nuclear medicine uses radioactive material for the diagnosis and treatment of pathologies, providing detailed information about the functioning of organs. Bone scintigraphy identifies metabolic changes in bones using the radiopharmaceutical Tc-MDP. However, this practice requires care towards the radiological protection of patients and professionals. Therefore, this study aims to evaluate the absorbed doses by occupationally exposed individuals during the preparation, administration and imaging stages of this exam, using Monte Carlo simulation. The scenarios were modeled with Blender software and the professionals were represented by anthropomorphic mesh-type phantoms. The results of the study show that the use of personal protective equipment (PPE), such as lead aprons and thyroid protectors, reduced the effective dose by 71.40%, while handling the radiopharmaceutical. In addition, the use of lead shield during image acquisition resulted in a 99.18% reduction in the effective dose. These findings reinforce the importance of PPE and collective protection measures to keep occupational doses low.
核医学使用放射性物质来诊断和治疗疾病，提供有关器官功能的详细信息。骨闪烁扫描术使用放射性药物锝-亚甲基二膦酸盐（Tc-MDP）来识别骨骼中的代谢变化。然而，这种操作需要注意对患者和专业人员的放射防护。因此，本研究旨在使用蒙特卡罗模拟评估职业暴露个体在该检查的准备、给药和成像阶段所吸收的剂量。使用Blender软件对场景进行建模，并用拟人化网格型体模来代表专业人员。研究结果表明，在处理放射性药物时，使用个人防护设备（PPE），如铅围裙和甲状腺防护器，可使有效剂量降低71.40%。此外，在图像采集期间使用铅屏蔽可使有效剂量降低99.18%。这些发现强化了个人防护设备和集体防护措施对于保持职业剂量较低的重要性。
