| JIAO Ling,SUN Jing-xing,DING Yan-qiu,et al.Properties of goat tooth enamel electron spin resonance dosimetry[J].Chinese Journal of Radiological Medicine and Protection,2011,31(2):233-235 |
| Properties of goat tooth enamel electron spin resonance dosimetry |
| Received:January 21, 2010 |
| DOI：10.3760/cma.j.issn.0254-5098.2011.02.031 |
| KeyWords:γ-rays Goat Tooth enamel Electron spin resonance Dosimetry |
| FundProject:教育部留学回国人员科研启动基金;人事部留学回国人员科研择优经费 |
| Author Name | Affiliation | | JIAO Ling | Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China | | SUN Jing-xing | Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China | | DING Yan-qiu | Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China | | ZHANG Wen-yi | Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China |
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| Abstract:: |
| Objective To study the properties of goat tooth enamel electron spin resonance (ESR) dosimetry. Methods Tooth enamel samples of goats were achieved by combined mechanical and chemical treatment at the ages of 1, 2, 3, 5, and 6 years, respectively and 9 enamel samples of adult molar were obtained. These enamel samples were exposed to 137Cs γ-rays at the cumulative doses of 0, 0.5, 1.0, 2.0, and 5.0 Gy, respectively. ESR spectra was measured before and after exposure. Results The background signal of goat tooth samples was 21.5, significantly lower than that of the adult molar samples (39.5). The dosimetric signal intensity of the goat enamel increased with the radiation dose in a linear manner just as that of the human molars. The average radiation sensitivity of the goat tooth samples was (34.3±1.9)/Gy, close to that of the human tooth samples. Conclusions Goat teeth can be used for retrospective radiation dose reconstruction when human teeth are unavailable, in order to provide scientific data for dose reconstruction accurately. |
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