| 基于m码码型变换提高多普勒血流测速分辨力的新方法 |
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| 引用本文： | 俞俊鑫,肖杨,余建国.基于m码码型变换提高多普勒血流测速分辨力的新方法[J].复旦学报(自然科学版),2008,47(6). |
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| 作者姓名： | 俞俊鑫 肖杨 余建国 |
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| 作者单位： | 复旦大学,电子工程系,上海,200433 |
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| 基金项目： | 上海市重点学科建设项目 |
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| 摘 要： | 为了提高多普勒血流测速的分辨力,提出了一种基于m码的新的编解码调制方法.通过回波波形、稳恒流、脉动流的仿真实验证实,本算法能较精确地测得指定区域的血流速度,性能明显优于Shiozaki算法和标准m码算法,可以提高多普勒血流测速的精度.
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| 关 键 词： | 超声多普勒 m码 血流速度 |
A New Method to Enhancing the Resolution of Doppler Flow Measurement Based on Improved m Code |
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| YU Jun-xin,XIAO Yang,YU Jian-guo.A New Method to Enhancing the Resolution of Doppler Flow Measurement Based on Improved m Code[J].Journal of Fudan University(Natural Science),2008,47(6). |
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| Authors: | YU Jun-xin XIAO Yang YU Jian-guo |
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| Abstract: | A novel coding and decoding method based on the pseudo-random code is proposed to improve the resolution of Doppler flow measurement.The simulations of echo signals,steady streams and pulsatile flows are carried out to validate this method.It is shown that the flow speed in the desired region can be measured with good precision,much better than that of the Shiozaki method and standard m-code method.Therefore,this coding and decoding method is an efficient one to improve the precision of Doppler flow measurement. |
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| Keywords: | ultrasound doppler pseudo-random m code blood velocity |
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