| 超声多普勒血流信号的分析方法 |
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| 引用本文： | 张良筱,张泾周,马颖颖.超声多普勒血流信号的分析方法[J].北京生物医学工程,2007,26(5):548-550,558. |
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| 作者姓名： | 张良筱 张泾周 马颖颖 |
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| 作者单位： | 西北工业大学自动化学院,西安,710072;西北工业大学自动化学院,西安,710072;西北工业大学自动化学院,西安,710072 |
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| 摘 要： | 超声多普勒技术是无损诊断血管疾病的一种重要手段,因此对超声多普勒血流信号的分析处理可以为疾病诊断提供重要依据.为了分析和处理像超声多普勒这类非平稳信号,人们对基于傅立叶变换的传统信号分析方法进行了推广乃至根本性的革命,提出并发展了一系列新的信号分析理论.本文对应用于超声多普勒血流信号分析的短时傅立叶变换、小波变换、参数模型法和Cohen类的时频分布等方法作了着重论述.
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| 关 键 词： | 超声多普勒 短时傅立叶变换 小波变换 参数模型 Cohen |
| 文章编号： | 1002-3208（2007）05-0548-03 |
| 收稿时间： | 2006-09-25 |
| 修稿时间： | 2006-09-25 |
The methods for analyzing the Doppler ultrasound blood flow signals |
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| ZHANG Liangxiao,ZHANG Jingzhou,MA Yingying.The methods for analyzing the Doppler ultrasound blood flow signals[J].Beijing Biomedical Engineering,2007,26(5):548-550,558. |
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| Authors: | ZHANG Liangxiao ZHANG Jingzhou MA Yingying |
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| Abstract: | Doppler ultrasound is an important lossless-diagnosis means of vein disease. The analysis of the Doppler ultrasound blood signals can provide concernful basis to disease diagnosis. In order to analyze and process the nonstationary signals like the Doppler ultrasound, people made extending or even thorough revolution to the traditional method of signal-analysis which is based on the Fourier-transform, brought forward and developed a series of signal-analysis theories. This article mainly discusses the STFT, wavelet transform , parameter-module method and Cohen-generic timefrequency distribution method applied in the analysis of Doppler ultrasound blood flow signal. |
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| Keywords: | Cohen |
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