|
|||||
|
|
| 回归型壁滤波器引起血流参数估计偏差的一种补偿方法 | |
| 引用本文： | 冯乃章,沈毅,刘志言,翟伟. 回归型壁滤波器引起血流参数估计偏差的一种补偿方法[J]. 中国生物医学工程学报, 2004, 23(5): 427-432 |
| 作者姓名： | 冯乃章 沈毅 刘志言 翟伟 |
| 作者单位： | 1. 哈尔滨工业大学控制科学与工程系,哈尔滨,150001 2. 大庆油田总医院,大庆,163000 |
| 摘 要： | 壁滤波是彩色血流成像系统中一项非常重要的技术 ,但是任何壁滤波器都会对血流参数的估计引入偏差。本研究针对回归型壁滤波器的特点 ,提出了一种简单、有效的偏差补偿方法。仿真实验表明 ,该方法能够取得较好的补偿效果 ,而且信噪比越小 ,补偿效果越明显 |
| 关 键 词： | 杂波 回归 壁滤波 多普勒频移 均方带宽 偏差 补偿 |
| 文章编号： | 0258-8021(2004)-05-427-06 |
| 修稿时间： | 2003-04-30 |
A METHOD OF COMPENSATION FOR THE BILAS INDUCED BY REGRESSION WALL FILTER ON THE ESTIMATION OF BLOOD PARAMETERS |
|
| FENG Nai- zhang ,SHEN Yi ,LIU Zhi-yan ,ZHAI Wei. A METHOD OF COMPENSATION FOR THE BILAS INDUCED BY REGRESSION WALL FILTER ON THE ESTIMATION OF BLOOD PARAMETERS[J]. Chinese Journal of Biomedical Engineering, 2004, 23(5): 427-432 | |
| Authors: | FENG Nai- zhang SHEN Yi LIU Zhi-yan ZHAI Wei |
| Affiliation: | FENG Nai- zhang 1,SHEN Yi 1,LIU Zhi-yan 1,ZHAI Wei 2 |
| Abstract: | Wall filtering is a very important technique in color flow imaging systems. Unfortunately,wall filter usually induces a bias to the estimation of blood parameters. In this paper, a simple and effective compensation method is proposed according to the characteristics of regression wall filters. Simulation shows that good compensation can be obtained by the proposed method. Moreover, the compensation effect becomes more evident when signal-to-noise ratio is smaller |
| Keywords: | Clutter Regression Wall filter Doppler frequency Mean square bandwidth Bias Compensation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |