Evaluation of corrective methods of measurement of accidental irradiation dose using in vivo ESR

使用体内ESR测量意外照射剂量的校正​​方法的评价

• 批准号: 21791824
• 负责人: IWASAKI Akinori
• 金额: $ 2.75万
• 依托单位: Kagawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21791824/
• 关键词: ESR; 放射線; 被曝線量測定; 歯エナメル質; ESR信号; スクリーニング法; 検出感度; トリアージ; 既存ESR信号; L-band; 共振器; 生成効率

The measurement of ESR background signals from human isolated teeth using L-band ESR spectrometer was carried out. The average of the ESR signal intensity was 0.017014±0.011049 a.u. (arbitrary units). The histogram analysis revealed that the distribution of the background signals obeyed a log-normal distribution. We confirmed that the serial irradiation by a diagnostic dental X-ray imager generates detectable ESR signals by L-band ESR spectrometer. It is suggested that medical exposures e.g. diagnostic dental X-ray imager mainly generate ESR background signal in human teeth. The addition of certain signal intensity seems to be acceptable procedure as a correction method.

用L波段ESR谱仪对人离体牙齿的ESR背景信号进行了测量。平均ESR信号强度为0.017014±0.011049 a.u.（任意单位）。直方图分析表明，背景信号的分布服从对数正态分布。我们证实，诊断牙科X射线成像仪的连续照射产生可检测的ESR信号的L-波段ESR光谱仪。研究表明，牙科诊断X射线成像仪等医疗照射主要在人体牙齿中产生ESR背景信号。增加一定的信号强度似乎是可接受的程序作为校正方法。