Multi-apodization with cross-correlation combined with generalized sidelobe canceller applied to ultrasound imaging

被引:0
|
作者
Wang, Ping [1 ]
Shen, Yue [1 ]
Chen, Jinghan [1 ]
Li, Qianwen [1 ]
Tong, Lin [1 ]
Li, Xitao [1 ]
机构
[1] Chongqing Univ, Sch Elect Engn, State Key Lab Power Transmiss Equipment Technol, Chongqing, Peoples R China
关键词
Ultrasound imaging; cross-correlation coefficient; adaptive subarray length; robustness; DUAL APODIZATION; COHERENCE FACTOR; BEAMFORMER; RESOLUTION;
D O I
10.3233/THC-230724
中图分类号
R19 [保健组织与事业(卫生事业管理)];
学科分类号
摘要
BACKGROUND: Beamforming is vital for medical ultrasound imaging systems. The generalized sidelobe canceller (GSC) beamforming can improve the image quality of lateral resolution, but its performance improvement in contrast and robustness is limited. OBJECTIVE: This paper proposes an improved generalized sidelobe canceller algorithm based on multi-apodization with cross-correlation (MAXB-IGSC), which aims to improve the contrast and robustness of ultrasound imaging while maintaining the high image resolution and background speckle quality of GSC. METHODS: The proposed MAXB-IGSC uses multiple pairs of complementary received apodization functions to process the echo data individually to obtain multiple pairs of data sets. The average of their normalized cross-correlation coefficients is then calculated and utilized to determine the adaptive subarray length of the GSC covariance matrix and weights the output of the improved GSC. RESULTS: The MAXB-IGSC improves the contrast ratio (CR) by 171.18% in anechoic cyst simulation and by 91.23%/130.97%/171.76% in geabr_0 (a dataset from the University of Michigan) experiment compared with GSC, respectively. Furthermore, MAXB-IGSC exhibits significant noise immunity, which greatly improves the robustness of the imaging. The technology also maintains the brightness and uniformity of the background speckle. CONCLUSION: The proposed MAXB-IGSC has potential for obtaining high-quality ultrasound images in clinical applications.
引用
收藏
页码:1713 / 1731
页数:19
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