The impact of self-shielded cyclotron operation on small-animal PET/CT equipment installed nearby, on the floor just above

• Kubo Hitoshi

  Departments of Medical Imaging, Institute of Health Biosciences, the University of Tokushima Graduate School

• Otani Tamaki

  Program in Biomedical Information Science, the University of Tokushima Graduate School

• Otsuka Hideki

  Departments of Medical Imaging, Institute of Health Biosciences, the University of Tokushima Graduate School

• Harada Masafumi

  Departments of Radiology, Institute of Health Biosciences, the University of Tokushima Graduate School

抄録

Purpose: The purpose of this study was to evaluate the impact of a cyclotron on small-animal PET equipment installed directly above the cyclotron. Methods: The cyclotron equipment was HM-12, which has two targets, and the PET/CT equipment was Inveon. The equipment was installed in conformity to Japanese law and regulations. Before installation of the PET/CT equipment, the radiation dose, radio waves, and static and fluctuating magnetic fields were measured at the position where it would be placed, both when the cyclotron was in use and when it was not in use. After installation of the PET/CT, natural background and emission counts were measured at the same place under the same conditions. Results: An increase of radiation dose was observed when the target nearest the PET equipment was used. There were no distinct effects of radio waves or static and fluctuating magnetic fields. A significant increase of emission counts, approximately 300 cpm, was observed when the nearest target was used. Conclusions: Though radio waves and static and fluctuating magnetic fields generated by running cyclotron had no influence, a significant increase in emission count was observed. Careful attention should be paid to this influence when very low-radioactivity PET measurements are done. J. Med. Invest. 61: 46-52, February, 2014

収録刊行物

• The Journal of Medical Investigation

  The Journal of Medical Investigation 61 (1.2), 46-52, 2014

  国立大学法人　徳島大学医学部

キーワード

• self-shielded cyclotron
• PET/CT for small animals
• radiation dose
• magnetic field

詳細情報

• CRID: 1390001204244690176
• NII論文ID: 130004822716
• NII書誌ID: AA11166929
• DOI: 10.2152/jmi.61.46
• ISSN: 13496867
• ISSN: 13431420
• PubMed: 24705748
• Web Site: http://repo.lib.tokushima-u.ac.jp/109516
• Web Site: https://www.jstage.jst.go.jp/article/jmi/61/1.2/61_46/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2015145090
• 本文言語コード: en
• データソース種別:
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  • IRDB
  • Crossref
  • PubMed
  • CiNii Articles
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