| 用Sievert法结合实验测量计算60Co射线的体模散射修正系数 |
| |
| 引用本文： | 徐志勇,张良安,戴光复,贾德林,苑淑渝.用Sievert法结合实验测量计算60Co射线的体模散射修正系数[J].中国辐射卫生,2002,11(2):73-74. |
| |
| 作者姓名： | 徐志勇 张良安 戴光复 贾德林 苑淑渝 |
| |
| 作者单位： | 中国医学科学院放射医学研究所,天津,300192 |
| |
| 摘 要： | 目的：用Sievert剂量计算公式结合实验测量的数据计算60Co产生的射线在等效体模中的散射修正系数。方法：采用四川成都体模和TLD法测量体模的吸收剂量，并用MATLAB应用程序来拟合修正系数，结果：给出了等效体模的散射修正系数，并计算了两种模拟事故情况下的重要器官的剂量，和它们与TLD法测出的剂量值间相对偏差。结论：在两种事故情况下，用理论公式计算的剂量与测量值相关不大，说明拟合出的系数在一定的范围内是适用的。
|
| 关 键 词： | 体模散射修正系数 散射 辐射事故 体模 Sievert法 |
| 文章编号： | 1004-714X(2002)02-0073-02 |
| 修稿时间： | 2001年6月27日 |
Phantom Scattering Correction Coefficient of 60Co Rays Calculated by Sievert Method Combined with Experimental Method |
| |
| XU Zhi-yong,ZHANG Liang-an,DAI Guang-fu,et al..Phantom Scattering Correction Coefficient of 60Co Rays Calculated by Sievert Method Combined with Experimental Method[J].Chinese Journal of Radiological Health,2002,11(2):73-74. |
| |
| Authors: | XU Zhi-yong ZHANG Liang-an DAI Guang-fu |
| |
| Institution: | XU Zhi-yong,ZHANG Liang-an,DAI Guang-fu,et al.Institute of radiation Medical,Chinese Academy of Medical sciences and Peking Union Medical College,Tianjin 300192,China. |
| |
| Abstract: | Objective Scattering correction coefficient of 60Co rays equivalent phantom was calculated by Sievert calculational method combined with experimental data.Methods Absorbed doses were measured by TLD experimental methods and scattering correction coefficients were fitted by Matlab application computer program.Results Scattering correction coefficient of equivalent phantom was given.Absorbed doses of two simulating accidents and relative variance of absorbed dose measured by TLD method and by Sievert method were calculated.Conclusion The discrepancy of absorbed dose between measured data and calculated data is small and the illuminated results fitted the correction coefficient is applicable in the regional scope. |
| |
| Keywords: | Scatter Irradiation Accident Phantom |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
