摘要
对肿瘤热疗过程中生物组织表面热流及内部温度同时反演进行了研究。首先介绍了激光辐照下生物组织内部光热传输模型,并采用有限体积法和离散坐标法相结合求解生物组织内光热传输问题;然后介绍了模糊推理方法基本原理,并采用改进分散模糊推理方法同时反演了激光诱导肿瘤热疗过程中生物组织表面入射热流及内部温度场;最后分析了热流形式和测量误差对反演结果的影响。结果表明,改进分散模糊推理方法可以准确地同时反演组织表面热流及内部温度分布,并具有较强稳定性和抗误差干扰能力。
The simultaneous estimation of thermal boundary condition and internal temperature of biological tissue during tumor thermotherapy is investigated.Firstly,the photo-thermal transfer model in biological tissue with laser irradiation is introduced.The finite volume method combined with discrete ordinate method is applied to solve the photo-thermal transfer in biological tissue.Then,the fundamental principles of fuzzy inference method(FIM)are presented.The decentralized FIM(DFIM)is employed to estimate the incident heat flux on tissue surface and internal temperature in tissue during laser induced tumor thermotherapy.Finally,the effects of heat flux form and measurement error on estimation results are investigated.The results demonstrate that the improved DFIM can be successfully estimate the surface heat flux and internal temperature.The present inverse method has strong stability and anti-ill-jamming ability.
作者
宋苗苗
孟宪纲
孙立栋
孙双成
SONG Miaomiao;MENG Xiangang;SUN Lidong;SUN Shuangcheng(Steam Power Division,NO703 Research Institute of China State Shipbuilding Company,Harbin 150078,China;Gas Turbine Institute,Hadian National Engineering Research Center-Power Equipment Co.,Ltd,Harbin 150078,China;Military Industry Development Department,NO703 Research Institute of China State Shipbuilding Company,Harbin 150078,China;Institute of New Energy System,Innovation Center of Advanced Rail Transit Equipment,Zhuzhou 412001,China)
出处
《热科学与技术》
CAS
CSCD
北大核心
2023年第3期307-312,共6页
Journal of Thermal Science and Technology
关键词
热边界条件
瞬态热流
温度分布
模糊推理
生物组织
thermal boundary condition estimation
transient heat flux
temperature distribution
fuzzy inference
biological tissue
