X射线防护橡胶的蒙特卡洛设计与初步测试  

Monte Carlo design and preliminary test of X-ray protective rubber

作　　者：林丽[1] 戚玮 胡兰 杜延修 邓君[4] 曹磊[3] LIN Li;QI Wei;HU Lan;DU Yanxiu;DENG Jun;CAO Lei(The Fourth Medical Center of Chinese PLA General Hospital Radiology Department,Beijing 100037 China;Shandong Double-Eagle Medical Device Co.Ltd,Yantai 264000 China;Beijing Institute of Occupational Medicine for Chemical Industry,Beijing 100086 China;National institute for Radiological Protection,China CDC,Beijing 100088 China)

机构地区：[1]解放军总医院第四医学中心,北京100037 [2]山东双鹰医疗器械有限公司,山东烟台264000 [3]北京市化工职业病防治院,北京100086 [4]中国疾病预防控制中心辐射防护与核安全医学所,北京100088

出　　处：《中国辐射卫生》2023年第2期137-140,145,共5页Chinese Journal of Radiological Health

基　　金：北京市职业病防治领域高层次专业技术人才培养项目(2014742603767J008)。

摘　　要：目的 对X射线防护橡胶进行蒙特卡罗设计与初步测试。方法 针对介入治疗X射线能谱特点,利用Monte Carlo模拟计算,研究了铅橡胶、钨及铋组合橡胶和钆及铋组合橡胶样品的屏蔽效果,并通过实际测量给出了对无铅橡胶和铅橡胶的铅当量随X射线峰值管电压变化规律。结果 峰值管电压在60~110 kV,无铅橡胶可实现对铅橡胶的有效替代。结论 现有无铅防护橡胶对低能杂散X射线的屏蔽衰减效果优于铅橡胶。考虑到铅橡胶的固有缺陷,热塑性弹性体为填料的柔性X射线防护制品将具有广阔发展前景。Objective To complete the Monte Carlo design and preliminary test of X-ray protective rubber.Methods According to the characteristics of X-ray energy spectrum for interventional therapy,the shielding effects of lead rubber,tungsten and bismuth composite rubber,and gadolinium and bismuth composite rubber samples were calculated by Monte Carlo simulation.The variation law of lead equivalent of lead-free rubber and lead rubber with X-ray peak tube voltage was obtained through actual measurement.Results Within the peak tube voltage range of 60-110 kV,lead-free rubber effectively replaced lead rubber.Conclusion The shielding and attenuation effect of the existing lead-free protective rubber on low-energy stray X-rays is better than that of lead rubber.Considering the inherent defects of lead rubber,flexible X-ray protective materials with thermoplastic elastomer as filler will have broad development prospects.

关 键 词：X射线防护 无铅防护橡胶 介入治疗 

分 类 号：R144.1[医药卫生—公共卫生与预防医学]