TLD occupational dose distribution study in nuclear medicine |
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| Affiliation: | 1. Department of Physics, Panjab University, Chandigarh 160014, India;2. Department of Radiotherapy, PGIMER, Chandigarh 160012, India;1. Radiation Protection by Instituto Federal de Educação, Ciência e Tecnologia de Santa Catarina, Florianópolis, SC, Brazil;2. Programa de Pós-Graduação em Proteção Radiológica, Instituto Federal de Educação, Ciência e Tecnologia de Santa Catarina (IFSC), Florianópolis, Santa Catarina, Brazil;3. Graduanda do Curso Superior de Tecnologia em Radiologia do Instituto Federal de Educação, Ciência e Tecnologia de Santa Catarina, Florianópolis, SC, Brazil;1. Diagnostic Radiology Department, College of Medical Radiological Science, Sudan University of Science and Technology, Khartoum, Sudan;2. Sudan Academy of Sciences, P.O Box 86, Khartoum, Sudan;3. INAYA Medical Collage, Nuclear Medicine Department, Riyadh, Saudi Arabia;4. Department of Physics, College of Sciences, Princess Nourah bint Abdulrahman University, P.O Box 84428, Riyadh, 11671, Saudi Arabia;5. Prince Sattam Bin Abdulaziz University, College of Applied Medical Sciences, Radiology and Medical Imaging Department, P.O.Box 422, Alkharj 11942, Saudi Arabia;6. Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia;7. Centre for Nuclear and Radiation Physics, Department of Physics, University of Surrey, Guildford, Surrey, GU2 7XH, UK;1. Department of Radiation Physics, The University of Texas, M.D. Anderson Cancer Center, Houston, TX, USA;2. Department of Biostatistics and Applied Math, The University of Texas, M.D. Anderson Cancer Center, Houston, TX, USA;2. Department of Radiology, Harvard Medical School, Boston, MA;3. The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD;4. Department of Radiology, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand;5. J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL |
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| Abstract: | The large and growing number of patients undergoing nuclear medicine procedures and workers involved in this practice requires continued efforts to improve the quality of diagnosis and to reduce the radiological risk associated. In Brazil, external individual monitoring with a dosemeter located on the thorax is compulsory for all workers in controlled areas. Extremity dosemeters are recommended in activities where hand dose can be much higher than on the thorax. This is typically the case for nuclear medicine procedures, but extremity dosemeters are not regularly used in Brazil. With the aim to study the occupational dose distribution in the nuclear medicine staff during their tasks of preparation and injection of radionuclides, Harshaw TLD chips of LiF:Mg,Cu,P (TLD-100H) were used for individual monitoring on different parts of the worker body. As expected, all doses measured on the thorax were much lower than on the hands. For both Single Photon Emission Computed Tomography (SPECT) and Positron Emission Tomography (PET), the dose to the fingers during preparation is about two orders of magnitude higher than in the thorax, and in the injection procedure, one order higher. The doses received by the workers' fingers varied widely depending on how they hold the syringe, but fingertips always received higher doses. The dose values measured in the eye lens were 200% higher than the one measured on the thorax. |
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| Keywords: | Occupational dose Nuclear medicine Eye lens dose Extremities dose TLD |
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