| 基于脉冲反相技术的医用高频超声组织谐波信息提取技术的研究 |
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| 引用本文： | 李跃杰,汤四媛,王立伟,李松.基于脉冲反相技术的医用高频超声组织谐波信息提取技术的研究[J].中国医疗器械杂志,2008,32(6). |
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| 作者姓名： | 李跃杰 汤四媛 王立伟 李松 |
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| 作者单位： | 中国医学科学院北京协和医学院生物医学工程研究所,天津,300192 |
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| 摘 要： | 本文在所研制的高频超声数字编码发射和宽带接收系统的基础上,利用基频为20 MHz、35 MHz和50 MHz的宽带超声换能器,进行了脉冲反相技术高频超声谐波提取方法的实验研究.结果表明.采用本方法,可有效地抑制基波的影响.同时能有效提高高频谐波信号的幅度,较传统的RF滤波法分离谐波具有明显的优势.
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| 关 键 词： | 高频超声 组织谐波 脉冲反向 |
Research on High-Frequency Ultrasonic Tissue Harmonic Information Extraction Based on Phase Inversion Technique |
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| LI Yue-jie,TANG Si-yuan,WANG Li-wei,LI Song.Research on High-Frequency Ultrasonic Tissue Harmonic Information Extraction Based on Phase Inversion Technique[J].Chinese Journal of Medical Instrumentation,2008,32(6). |
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| Authors: | LI Yue-jie TANG Si-yuan WANG Li-wei LI Song |
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| Institution: | LI Yue-jie,TANG Si-yuan,WANG Li-wei,LI Song Institude of Biomedical Engineering,Chinese Academy of Medical Sciences , Peking Union Medical College,Tianjin,300192 |
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| Abstract: | Based on the pulse-coded transmitting and wide-band receiving system,this paper describes A research of phase inversion technique to extract high-frequency ultrasonic tissue harmonic information by making use of wide-band ultrasonic transducer on frequency of 20 MHz,35 MHz and 50 MHz.The results indicate that adopting the method in this paper is with better fundamental frequency inhibition and at the same time can increase the amplitude of second harmonic information effectively.This method is superior to t... |
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| Keywords: | high-frequency ultrasonic tissue harmonic phase inversion technique |
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