Ultrasound Endoscopic Imaging Algorithm Based on Linear Constraint Minimum Variance Criterion and Synthetic Aperture Sequential Beamforming

Tian Xiaodong; Wang Yi; Yang Jin; Jin Hao; Cai Huaiyu; Chen Xiaodong

doi:10.3788/CJL202047.0804005

Chinese Journal of Lasers, Volume. 47, Issue 8, 804005(2020)

Ultrasound Endoscopic Imaging Algorithm Based on Linear Constraint Minimum Variance Criterion and Synthetic Aperture Sequential Beamforming

Tian Xiaodong¹, Wang Yi^1、*, Yang Jin¹, Jin Hao², Cai Huaiyu¹, and Chen Xiaodong¹

Author Affiliations

¹Key Laboratory of Opto-Electronic Information Technology, Ministry of Education, School of Precision Instrument and Opto-Electronic Engineering, Tianjin University, Tianjin 300072, China

²Beijing Huaco Healthcare Technologies Co., Ltd., Beijing 100195, China

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Figures & Tables(9)

Fig. 1. Basic imaging principle of SASB

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Fig. 2. Wave propagation path of SASB algorithm

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Fig. 3. Flow chart of SASB-MV algorithm

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Fig. 4. Simulation imaging results of point target. (a) DRF algorithm imaging; (b) SASB algorithm imaging; (c) SASB-MV algorithm imaging

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Fig. 5. Point target lateral energy expansions (z=55 mm)

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Fig. 6. Simulation imaging results of circular cysts. (a) DRF algorithm; (b) SASB algorithm; (c) SASB-MV algorithm

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Fig. 7. Circular cysts lateral energy expansions (z=37 mm)

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Table 1. Lateral resolution at different positions depthsmm
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Table 1. Lateral resolution at different positions depthsmm
Algorithm 25 mm 35 mm 45 mm 55 mm 65 mm 75 mm
DRF 0.83 1.15 1.46 1.78 2.09 2.43
SASB 0.62 0.72 0.87 1.02 1.20 1.36
SASB-MV 0.62 0.62 0.62 0.63 0.71 0.78

Table 2. Contrast and CNR of circular cysts simulation image
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Table 2. Contrast and CNR of circular cysts simulation image
Algorithm Mean intensityin phantomlesion /dB Mean intensityin background /dB C₀ C_NR
DRF -24.48 -11.83 6.32 0.94
SASB -39.10 -13.86 9.01 1.17
SASB-MV -52.62 -14.39 11.26 1.36

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Tian Xiaodong, Wang Yi, Yang Jin, Jin Hao, Cai Huaiyu, Chen Xiaodong. Ultrasound Endoscopic Imaging Algorithm Based on Linear Constraint Minimum Variance Criterion and Synthetic Aperture Sequential Beamforming[J]. Chinese Journal of Lasers, 2020, 47(8): 804005

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