Evaluation of activation in medical products from electron beam processing at energies slightly above 10 MeV |
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| Institution: | 1. Department of Science and Technology, Gunma University, 1-5-1 Tenjin-machi, Kiryu, Gunma 376-8515, Japan;2. Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan;1. Ion Implantation Laboratory, Institute of Physics, Federal University of Rio Grande do Sul, Av. Bento Gonçalves 9500, P.O. Box 15051, CEP 91501-970 Porto Alegre, RS, Brazil;2. Graduate Program on Materials Science, Federal University of Rio Grande do Sul, Av. Bento Gonçalves 9500, CEP 91540-000 Porto Alegre, RS, Brazil;1. Univ. Bordeaux, CENBG, UMR 5797, F-33170 Gradignan, France;2. CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan, France;3. Laboratoire Bordelais de Recherche en Informatique (LaBRI, UMR5800) Univ. Bordeaux, 351 Cours de la Libération, 33405 Talence cedex, France;4. Intégration du Matériau au Système (IMS, UMR5218), Univ. Bordeaux, 351 Cours de la Libération, 33405 Talence, France;5. Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB, UPR9048) CNRS, Université de Bordeaux, 87 avenue du Dr. A. Schweitzer, Pessac F-33608, France;6. Center of Medical Image Computing (CMIC), Department of Medical Physics & Bioengineering, University College London, Gower Street, London WC1E 6BT, United Kingdom;1. Japan Atomic Energy Agency, 4-33, Muramatsu, Tokai-mura, Ibaraki 319-1194, Japan;2. Japan Atomic Energy Agency, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan;3. Shibaura Institute of Technology, 3-7-5, Toyosu, Koutouku, Tokyo 135-8548, Japan;4. Tokyo City University, 1-28-1, Tamazutsumi, Setagayaku, Tokyo 158-8557, Japan;5. National Institute for Quantum and Radiological Science and Technology, 1233, Watanukicho, Takasaki, Gunma 370-1292, Japan |
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| Abstract: | Standards for radiation sterilization of health care products require evaluation of the potential for induced radioactivity for electron beam energies greater than 10 MeV. Measured energy for a 10 MeV accelerator may be slightly higher, which could fall under the requirement. The evaluation method in this paper uses a pathways analysis method to estimate individual dose, which is compared against the estimate of induced activity. Based on this comparison, the amount of induced activity at 10.4 MeV beam energy does not present a significant individual risk from exposure to the irradiated device. |
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