射频加热治疗肿瘤体模实验的数值模拟

目前射频加热治疗肿瘤在临床研究方面已取得了相当大的进展 ,但在热物理方面所做的研究还较少。为了能更有效地指导临床实践 ,对射频加热治疗肿瘤的体模实验进行了描述 ,对体模内的电场和热场进行了分析 ,建立了二维的似稳电场模型和热物理模型 ,用有限元方法对体模实验进行了模拟计算 ,获得了电磁波能量在体模中的比吸收率和体模实验稳态时的温度场。模拟计算的结果和实验结果相比较达到了接近实用的精度 ,验证了该模型的合理性

Numerical simulation of tissue-equivalent material experiments for radio frequency hyperthermia of tumors

Radio frequency hyperthermia of tumors has progressed rapidly in clinical practice, but the related thermal physical research lags far behind. This paper describes tissue-equivalent material experiments for radio frequency hyperthermia of tumors, and analyzes the electric field and the thermal field in the tissue-equivalent material with the quasi-steady electric field and thermal physical models with numerical simulations of the experiments using the finite element method. The energy SAR (specific absorption rate) and the steady-state temperature distribution in the tissue-equivalent material were calculated. The precision of the numerical simulation is promising for clinical applications.