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Adaptive diagonal loaded minimum variance beamforming applied to medical ultrasound imaging 被引量:2

Adaptive diagonal loaded minimum variance beamforming applied to medical ultrasound imaging
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摘要 In order to enhance the robustness and contrast in the minimum variance(MV) beamformer, adaptive diagonal loading method was proposed. The conventional diagonal loading technique has already been used in the MV beamformer, but has the drawback that its level is specified by predefined parameter and without consideration of input-data. To alleviate this problem, the level of diagonal loading was computed appropriately and automatically from the given data by shrinkage method in the proposed adaptive diagonal loaded beamformer. The performance of the proposed beamformer was tested on the simulated point target and cyst phantom was obtained using Field II. In the point target simulation, it is shown that the proposed method has higher lateral resolution than the conventional delay-and-sum beamformer and could be more robust in estimating the amplitude peak than the MV beamformer when acoustic velocity error exists. In the cyst phantom simulation, the proposed beamformer has shown that it achieves an improvement in contrast ratio and without distorting the edges of cyst. In order to enhance the robustness and contrast in the minimum variance(MV) beamformer, adaptive diagonal loading method was proposed. The conventional diagonal loading technique has already been used in the MV beamformer, but has the drawback that its level is specified by predefined parameter and without consideration of input-data. To alleviate this problem, the level of diagonal loading was computed appropriately and automatically from the given data by shrinkage method in the proposed adaptive diagonal loaded beamformer. The performance of the proposed beamformer was tested on the simulated point target and cyst phantom was obtained using Field II. In the point target simulation, it is shown that the proposed method has higher lateral resolution than the conventional delay-and-sum beamformer and could be more robust in estimating the amplitude peak than the MV beamformer when acoustic velocity error exists. In the cyst phantom simulation, the proposed beamformer has shown that it achieves an improvement in contrast ratio and without distorting the edges of cyst.
出处 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第5期1826-1832,共7页 中南大学学报(英文版)
基金 Project(2013GZX0147-3)supported by the Science and Technology Pillar Program of Sichuan Province,China
关键词 medical ultrasound imaging minimum variance BEAMFORMING DIAGONAL loading delay-and-sum BEAMFORMING CONTRAST ROBUSTNESS medical ultrasound imaging minimum variance beamforming diagonal loading delay-and-sum beamforming contrast robustness
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参考文献19

  • 1SZABO T L. Diagnostic ultrasound imaging: Inside out [M]. Salt Lake City: Academic Press, 2004.
  • 2SYNNEVAG J F, AUSTENG A, HOLM S. Adaptive beamforming applied to medical ultrasound imaging [J]. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2007, 54(8): 1606-1613.
  • 3NILSEN C C, HAFIZOVIC I. Beamspace adaptive beamforming for ultrasound imaging [J]. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2009, 56(10): 2187-2197.
  • 4SYNNEVAG J F, AUSTENG A, HOLM S. Benefits ofminimum-variance beamforming in medical ultrasound imaging [J]. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2009, 56(9): 1868-1879.
  • 5ZHANG Zhi-hong, LIU Hao-lin, HE Ying-ni, LIU Dong-quan. Optimization of ultrasonic elastography by coded excitation and transmit-side multi-frequency compounding [J]. Journal of Cen~:ral South University, 2014, 21(3): 1003-1010.
  • 6ASL B M, MAHLOOJIFAR A. Minimum variance beamforming combined with adaptive coherence weighting applied to medical ultrasound imaging [J]. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2009, 56(9): 1923-1931.
  • 7ASL B M, MAHLOOJIFAR A. A low-complexity adaptive beamformer for ultrasound imaging using structured covariance matrix [J]. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2012, 59(4): 660-667.
  • 8ASL B M, MAHLOOJIFAR A. Eigenspace-based minimum variance beamforming applied to medical ultrasound imaging [J]. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2010, 57(11): 2381-2390.
  • 9ZENG X, WANG Y, YU J. Correspondence Beam-domain eigenspace-based minimum variance beamformer for medical ultrasound imaging [J]. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2013, 60(12): 2670 2676.
  • 10CAPON J. High-resolution frequency-wavenumber spectrum analysis [J]. Proceedings of the IEEE, 1969, 57(8): 1408 1418.

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