title: L Band EPR Tooth Dosimetry for Heavy Ion Irradiation.
abstract: Electron Paramagnetic Resonance (EPR) tooth dosimetry is being developed as a device to rapidly assess large populations that were potentially exposed to radiation during a major radiation accident or terrorist event. While most exposures are likely to be due to fallout and therefore involve low linear energy transfer (LET) radiation, there is also a potential for exposures to high LET radiation, for which the effect on teeth has been less well characterized by EPR. Therefore, the aim of this paper is to acquire fundamental response curves for high LET radiation in tooth dosimetry using L band EPR. For this purpose, we exposed human teeth to high energy carbon ions using the heavy ion medical accelerator in Chiba at the National Institute of Radiological Sciences. The primary findings were that EPR signals for carbon ion irradiation were about one-tenth the amplitude of the response to the same dose of 150 kVp X-rays.
authors.affiliation: Department of Environmental Health, National Institute of Public Health, 2-3-6, Minami, Wako, Saitama 351-0197, Japan drhyama@niph.go.jp.
authors.forename: Ichiro
authors.initials: I
authors.lastname: Yamaguchi
authors.affiliation: Department of Radiological Sciences, School of Health Sciences, Ibaraki Prefectural University, Ami, Ami-machi, Inashiki-gun, Ibaraki 300-0394, Japan.
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Sato
authors.affiliation: Department of Radiological Sciences, School of Health Sciences, Ibaraki Prefectural University, Ami, Ami-machi, Inashiki-gun, Ibaraki 300-0394, Japan.
authors.forename: Hiraku
authors.initials: H
authors.lastname: Kawamura
authors.affiliation: National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage, Chiba, Chiba 263-8555, Japan.
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Hamano
authors.affiliation: National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage, Chiba, Chiba 263-8555, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yoshii
authors.affiliation: National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage, Chiba, Chiba 263-8555, Japan.
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Suda
authors.affiliation: Oral and Maxillofacial Surgery, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa Prefecture, 761-0793, Japan.
authors.forename: Minoru
authors.initials: M
authors.lastname: Miyake
authors.affiliation: Department of Environmental Health, National Institute of Public Health, 2-3-6, Minami, Wako, Saitama 351-0197, Japan.
authors.forename: Naoki
authors.initials: N
authors.lastname: Kunugita
mesh_terms: D001681:Biological Assay / Q000379:methods*; D015415:Biomarkers / Q000032:analysis; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D020450:Heavy Ions; D006801:Humans; D066298:In Vitro Techniques; D000069079:Radiation Exposure / Q000032:analysis*; D011834:Radiation Monitoring / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014070:Tooth / Q000737:chemistry* / Q000528:radiation effects*
chemical_list: D015415:Biomarkers