基于CT值的组织辐射等效材料设计方法  

Design Method Based on the CT Number for the Radiation Tissue-equivalent Materials

作　　者：刘刚[1] 樊庆文[1] 林大全 王远萍 

机构地区：[1]四川大学制造科学与工程学院,四川成都610065 [2]成都方拓仿真技术有限责任公司

出　　处：《中外医学研究》2013年第3期5-7,共3页CHINESE AND FOREIGN MEDICAL RESEARCH

基　　金：航天医学基础与应用国家重点实验室开放基金资助项目(项目编号:SMFA12K13)

摘　　要：提供一种基于CT值设计组织辐射等效材料的方法。根据CT值与组织辐射等效材料元素组分的内在联系,建立在一定射线(X或γ射线)能量的照射下计算人体组织辐射等效材料质量配比的数学模型,设计具有与人体组织相同CT值的组织辐射等效材料。通过比较组织辐射等效材料与相应人体组织的质量衰减系数,说明该方法可行。论文提供的设计方法对医疗照射能量下组织辐射等效材料的设计以及航空航天假人的研制具有一定的理论指导价值。A design method based on the CT number for the radiation tissue-equivalent materials was brought up.According to the relationship between the CT number and the element content of radiation tissue-equivalent materials, a mathematic model was founded to calculate the mass ratio of the radiation tissue- equivalent materials under a determination energy of the rays（X or γ ray）.The radiation tissue-equivalent materials with similar CT number of human body were designed.The mass attenuation coefficients of the radiation tissue-equivalent materials were compared to it of the body tissues.The results declared that this design method was feasible.The method provided in this paper processed some theoretical value to guide the design of the radiation tissue-equivalent materials under the energy used for medicine and the design of aerospace false.

关 键 词：CT值 组织辐射等效材料 质量衰减系数 

分 类 号：R142[医药卫生—公共卫生与预防医学]