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微波热疗温度场仿真中SAR分布影响因素的研究 被引量：2

Research on Influence Factors of SAR Distribution in Temperature Field Simulation of Microwave Hyperthermia
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摘要 为了提高微波热疗温度场仿真的精度,本文从以下3个方面研究了影响比吸收率(SAR)分布的因素:对实验中的温度误差做定量计算;确定拟合中的最佳时间段;提出一种SAR分布的优化拟合方法。经过大量计算与对比仿真结果后发现,当实验中温度误差控制在3.5℃以内,选取前60 s、70 s…110 s时间段进行拟合对仿真结果影响不大,所提出的SAR加权最小二乘拟合法更加稳定有效。 In order to improve the accuracy of temperature ifeld simulation of microwave hyperthermia, this study analyzed the influence factors of SAR distribution in terms of quantitative calculation of temperature error, determination of effective time points of SAR iftting and introduction of optimum iftting method of SAR distribution. The results of massive calculation and simulation comparison showed that the weighted least squares iftting method would be more stable and effective than the traditional method when the temperature error was controlled within 3.5 ℃and the time points of SAR iftting were choosed as 60 s、70 s…110 s.
作者 张曼 吴水才 胡芮 林岚 高宏建
机构地区 北京工业大学生命科学与生物工程学院
出处 《中国医疗设备》 2014年第11期25-28,共4页 China Medical Devices
基金 国家自然科学基金专项基金项目资助(81127006)
关键词 微波热疗 温度场仿真 SAR拟合 加权最小二乘法 microwave hyperthermia temperature ifeld simulation SAR iftting weighted least square method
分类号 R318.04 [医药卫生—生物医学工程] R318.6 [医药卫生—生物医学工程]
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参考文献15

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共引文献43

同被引文献38

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引证文献2

二级引证文献3

中国医疗设备
2014年 第11期

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