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一种基于Casorati-奇异值分解的超快平面波超声多普勒自适应时空域杂波抑制算法

徐依雯 杨晨 徐杰 焦阳 崔崤峣

徐依雯, 杨晨, 徐杰, 焦阳, 崔崤峣. 一种基于Casorati-奇异值分解的超快平面波超声多普勒自适应时空域杂波抑制算法[J]. 电子与信息学报, 2021, 43(8): 2334-2342. doi: 10.11999/JEIT200618
引用本文: 徐依雯, 杨晨, 徐杰, 焦阳, 崔崤峣. 一种基于Casorati-奇异值分解的超快平面波超声多普勒自适应时空域杂波抑制算法[J]. 电子与信息学报, 2021, 43(8): 2334-2342. doi: 10.11999/JEIT200618
Yiwen XU, Chen YANG, Jie XU, Yang JIAO, Yaoyao CUI. Adaptive Spatiotemporal Clutter Rejection Based on Casorati-Singular Value Decompositionfor Ultrafast Plane-wave Doppler Imaging[J]. Journal of Electronics & Information Technology, 2021, 43(8): 2334-2342. doi: 10.11999/JEIT200618
Citation: Yiwen XU, Chen YANG, Jie XU, Yang JIAO, Yaoyao CUI. Adaptive Spatiotemporal Clutter Rejection Based on Casorati-Singular Value Decompositionfor Ultrafast Plane-wave Doppler Imaging[J]. Journal of Electronics & Information Technology, 2021, 43(8): 2334-2342. doi: 10.11999/JEIT200618

一种基于Casorati-奇异值分解的超快平面波超声多普勒自适应时空域杂波抑制算法

doi: 10.11999/JEIT200618
基金项目: 国家自然科学基金(51805529),江苏省重点研发计划(BE2017601, BE2017661)
详细信息
    作者简介:

    徐依雯:女,1993年生,硕士,研究方向为医用超声图像处理

    杨晨:男,1993年生,博士生,研究方向为医用超声图像处理

    徐杰:男,1990年生,副研究员,研究方向为超声系统设计、电子电路分析与设计

    焦阳:男,1988年生,副研究员,研究方向为医学超声成像和系统设计

    崔崤峣:女,1974年生,研究员,博士生导师,研究方向为超声成像、超声生物效应和光声效应

    通讯作者:

    焦阳 jiaoy@sibet.ac.cn

  • 中图分类号: TN911.7; R445.1

Adaptive Spatiotemporal Clutter Rejection Based on Casorati-Singular Value Decompositionfor Ultrafast Plane-wave Doppler Imaging

Funds: The National Natural Science Foundation of China (51805529); Jiangsu Provincial Key Research and Development Plan (BE2017601, BE2017661)
  • 摘要: 超快超声平面波成像技术实现了超声的高帧频大视野同步采集,捕捉到更多有效原始信息,而传统滤波器在处理这种大视野数据方面有诸多不足。该文基于Casorati奇异值分解(Casorati-SVD)技术提出一种改进的自适应杂波抑制算法:首先,选取一个区域的原始平面波数据构建Casorati数据矩阵并进行奇异值分解;其次,根据分解后分量的多普勒频率和能量自适应匹配合适的滤波截止参数,抑制组织杂波和噪声并提取血流信号;最后,对每个区域重复前面的步骤并统计所有输出获取最终图像。该文分别在仿体、人体手臂动脉和家兔脑血流的回波信号上验证该算法抑制杂波的能力,这些实验结果表明,相比全局Casorati奇异值分解滤波器,这种改进的分区域自适应滤波算法将信噪比(SNR)提高4.4%~50%,对比信噪比(CNR)提高4.7%~55.9%。该技术实现了多普勒血流成像的空间自适应滤波,对临床血流成像的发展有重要意义。
  • 图  1  理想高通滤波器示意图

    图  2  相邻25个像素点慢时信号相关矩阵

    图  3  Casorati数据矩阵重构

    图  4  SVD奇异值分布示意图

    图  5  时间奇异向量频谱图

    图  6  分区域滤波方法示意图

    图  7  仿体实验与功率多普勒图像

    图  8  手臂动脉实验与功率多普勒图像

    图  9  家兔大脑功率多普勒图像

    图  10  信噪比曲线

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出版历程
  • 收稿日期:  2020-07-24
  • 修回日期:  2021-03-19
  • 网络出版日期:  2021-04-13
  • 刊出日期:  2021-08-10

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