| 利用射频信号解卷积估计组织和血流运动速度 |
| |
| 引用本文： | 陈功,于洁,宋富先,章东. 利用射频信号解卷积估计组织和血流运动速度[J]. 声学技术, 2010, 29(2): 171-175. DOI: 10.3969/j.issn1000-3630.2010.02.011 |
| |
| 作者姓名： | 陈功 于洁 宋富先 章东 |
| |
| 作者单位： | 1. 江苏省中医院,南京,210029
2. 南京大学声学研究所近代声学教育部重点实验室,南京,210093 |
| |
| 基金项目： | 教育部新世纪优秀人才支持计划 |
| |
| 摘 要： | 基于射频信号解卷积,提出了一种无需MTI（Moving Target Indicator）滤波重建血流及组织运动速度的方法。对射频回波的采样序列进行快速傅里叶变换,在频域对相邻两次射频回波的频谱作解卷积处理,通过分析解卷后的数值序列得到组织和血流各自的运动速度。仿真实验对两组典型的时延参数的超声回波信号进行了血流和组织速度的估算,并与给定值比较,证明了方法的有效。该方法有助提高超声血流成像系统对低速血流的测量精度。
|
| 关 键 词： | 彩色血流估计 解卷积 时延估计 杂波抑制 |
| 收稿时间： | 2009-03-30 |
| 修稿时间： | 2009-05-30 |
Estimation of velocities of tissue motion and blood flow based on radio frequency signal deconvolution |
| |
| CHEN Gong,YU Jie,SONG Fu-xian and ZHANG Dong. Estimation of velocities of tissue motion and blood flow based on radio frequency signal deconvolution[J]. Technical Acoustics, 2010, 29(2): 171-175. DOI: 10.3969/j.issn1000-3630.2010.02.011 |
| |
| Authors: | CHEN Gong YU Jie SONG Fu-xian ZHANG Dong |
| |
| Affiliation: | CHEN Gong1,YU Jie1,SONG Fu-xian2,ZHANG Dong2(1.The Traditional Chinese Medicine Hospital of Jiangsu Province,Nanjing 210029,China,2.Institute of Acoustics,Nanjing University,Nanjing 210093,China) |
| |
| Abstract: | A novel approach based on radio frequency signal deconvolution is developed to estimating the velocities of blood flow and tissue motion without MTI filtering.In this method,the sampled sequences of the radio frequency echoes are transformed to the frequency domain by FFT algorithm firstly.Then these transformed sequences are deconvolved.Finally the velocities of the blood flow and the tissue motion can be obtained by a spectrum analysis of these deconvolved sequences.This approach has been applied to the s... |
| |
| Keywords: | color flow estimation deconvolution time delay estimation clutter rejection |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《声学技术》浏览原始摘要信息 |
|
点击此处可从《声学技术》下载免费的PDF全文 |
|
