东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (4): 468-473.DOI: 10.12068/j.issn.1005-3026.2018.04.003

• 信息与控制 • 上一篇    下一篇

医疗超声成像自适应波束形成算法

鲍喜荣, 李玉珍, 苏婷, 张石   

  1. (东北大学 计算机科学与工程学院, 辽宁 沈阳110169)
  • 收稿日期:2016-11-04 修回日期:2016-11-04 出版日期:2018-04-15 发布日期:2018-04-10
  • 通讯作者: 鲍喜荣
  • 作者简介:鲍喜荣(1978-), 男, 湖北当阳人,东北大学讲师,博士; 张石(1963-),男,辽宁抚顺人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51171041).国家自然科学基金青年基金资助项目(61302012).

Adaptive Beamforming Algorithm for Medical Ultrasound Imaging

BAO Xi-rong, LI Yu-zhen, SU Ting, ZHANG Shi   

  1. School of Computer Science & Engineering, Northeastern University, Shenyang 110169, China.
  • Received:2016-11-04 Revised:2016-11-04 Online:2018-04-15 Published:2018-04-10
  • Contact: LI Yu-zhen
  • About author:-
  • Supported by:
    -

摘要: 针对传统医疗超声最小方差自适应波束形成算法的稳健性差、图像对比度提高有限、算法复杂度高等缺点,在基于QR分解的最小方差(QRMV)波束形成的基础上,引入了符号相干系数,提出了一种基于QR分解的最小方差与符号相干系数融合的自适应波束形成算法.仿真结果表明:该算法分辨率、对比度都优于传统的延时叠加、最小方差及基于QR分解的最小方差算法,表现出和最小方差与符号相干系数融合(SFMV)算法非常接近的性能,但运算复杂度却远低于它.

关键词: 最小方差, 符号相干系数, QR分解, 分辨率, 对比度

Abstract: The traditional minimum variance(MV)adaptive beamforming algorithm for medical ultrasound has the disadvantages of poor robustness, limited image contrast enhancement and high algorithm complexity. So, according to the minimum variance beamforming based on QR decomposition(QRMV), the sign coherence factor was introduced, and an adaptive beamforming algorithm of QRMV combined with sign coherence factor was proposed. The simulation results showed that the proposed algorithm in the aspects of resolution and contrast is superior to the conventional delay and sum(DAS), MV and QRMV, and its performances are very close to SFMV, but its computational complexity is far lower than SFMV.

Key words: minimum variance(MV), sign coherence factor(SCF), QR decomposition, resolution, contrast

中图分类号: