^238U and^232Th concentrations measured in different medical drugs by using solid-state nuclear track detectors and resulting radiation doses to the skin of patients  

作　　者：m.a.misdaq a.matrane 

机构地区：[1]Nuclear Physics and Techniques Laboratory,Faculty of Sciences Semlalia,University of Cadi Ayyad,BP.2390,40000 Marrakech,Morocco [2]URAC-15 Research Unit Associated to the CNRST,Rabat,Morocco [3]Nuclear Medicine Service,Mohamed VI University Hospital Centre,Faculty of Medicine and Pharmacy,University of Cadi Ayyad,40000 Marrakech,Morocco

出　　处：《Nuclear Science and Techniques》2016年第3期11-22,共12页核技术（英文）

基　　金：under an URAC-15 research contract with the CNRST,Rabat,Morocco

摘　　要：Urban populations in Morocco receive free medical drugs as prescribed by doctors in district health centres.To explore the exposure pathway of ^(238)U and^(232)Th and their decay products on the skin of patients,these radionuclides were measured in various medical drugs by using solid-state nuclear track detectors(SSNTDs).The measured concentrations range of ^(238)U and ^(232)Th in the medical drug samples of interest vary from(4.3±0.3) to(11.1±0.7) mBq 1^(-1) and(0.49±0.03) to(1.3±0.1)mBq 1^(-1),respectively.A new dosimetric model,based on the concept of specific alpha-dose and alpha-particle residual energy,was developed for evaluating radiation doses to skin following the application of different medical drugs by patients.The maximum total equivalent effective dose to skin due to the ^(238)U and ^(232)Th series from cutaneous application of different medical drugs by patients was found to be 2.8 mSv year^(-1) cm^(-2).Urban populations in Morocco receive free medical drugs as prescribed by doctors in district health centres.To explore the exposure pathway of ^238U and^232Th and their decay products on the skin of patients,these radionuclides were measured in various medical drugs by using solid-state nuclear track detectors（SSNTDs）.The measured concentrations range of ^238U and ^232Th in the medical drug samples of interest vary from（4.3±0.3） to（11.1±0.7） mBq 1^-1 and（0.49±0.03） to（1.3±0.1）mBq 1^-1,respectively.A new dosimetric model,based on the concept of specific alpha-dose and alpha-particle residual energy,was developed for evaluating radiation doses to skin following the application of different medical drugs by patients.The maximum total equivalent effective dose to skin due to the ^238U and ^232Th series from cutaneous application of different medical drugs by patients was found to be 2.8 mSv year^-1 cm^-2.

关 键 词：固体核径迹探测器 药物应用 辐射剂量 皮肤 患者 浓度测定 放射性核素 城市人口 

分 类 号：R144[医药卫生—公共卫生与预防医学]