| 生物组织超声散射系数与温度相关性的研究 |
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| 引用本文： | 石东兵,钱盛友,侯建爱,明文.生物组织超声散射系数与温度相关性的研究[J].激光生物学报,2013(6):491-495. |
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| 作者姓名： | 石东兵 钱盛友 侯建爱 明文 |
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| 作者单位： | 湖南师范大学物理与信息科学学院,湖南长沙410081 |
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| 基金项目： | 国家自然科学基金（11174077）;湖南省自然科学基金项目（11JJ3079）;湖南省教育厅基金项目（12C0237） |
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| 摘 要： | 在随机起伏介质超声散射理论基础上,根据生物非均匀介质中声波动方程,推导出散射系数与温度的关系,然后分别采用了回波直接截取、经验模态分层（EDM）两种方法进行实验验证分析.结果表明超声散射系数与温度有依次递增的对应关系,可以运用它从超声回波信号中有效地提取组织温度信息.经验模态分层法的数据处理结果一致性要好些,总体趋势更接近理论分析.
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| 关 键 词： | 热疗无损测温 超声散射系数 非均匀多级散射 经验模态分层 |
Research on Correlation between Biological Tissue Ultrasonic Scattering Coefficient and Temperature |
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| SHI Dongbing,QIAN Shengyou,HOU Jianai,MING Wen.Research on Correlation between Biological Tissue Ultrasonic Scattering Coefficient and Temperature[J].ACTA Laser Biology Sinica,2013(6):491-495. |
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| Authors: | SHI Dongbing QIAN Shengyou HOU Jianai MING Wen |
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| Institution: | (School of Physics and Information Science, Hunan Normal University, Changsha 410081, Hunan, China) |
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| Abstract: | On the basis of random fluctuation medium ultrasonic scattering theory, according to acoustic wave equation in biological non-homogeneous medium, the relationship between scattering coefficient and temperature is deduced, and then were respectively adopt two kinds of methods - direct interception echo and the EMD layered to analyze the experi- mental data. The results showed that ultrasonic scattering coefficient increases with the temperature, and it can be used to effectively obtain tissue temperature information in tissue from the ultrasonic echo signal. The results in the EMD expe- rience modal data of the layered method are better consistency, which overall trend is more close to the theoretical analy- sis. |
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| Keywords: | hyperthermia noninvasive temperature estimation ultrasonic scattering coefficient inhomogeneous multi-ple scattering empirical mode decomposition （EMD） |
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