Journal of Northeastern University Natural Science ›› 2019, Vol. 40 ›› Issue (7): 925-931.DOI: 10.12068/j.issn.1005-3026.2019.07.003

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Plane Wave Ultrasonic Imaging Algorithm Based on Improved DMAS and Its GPU Implementation

BAO Xi-rong, SHEN Xiao-yan, ZHANG Shi, SU Ting   

  1. School of Computer Science & Engineering, Northeastern University, Shenyang 110169, China.
  • Received:2018-06-21 Revised:2018-06-21 Online:2019-07-15 Published:2019-07-16
  • Contact: SHEN Xiao-yan
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Abstract: The contrast signal-to-noise ratio(SNR) of the image synthesized by the plane wave ultrasonic imaging algorithm based on DMAS beamforming is low and the real-time imaging problem cannot be realized due to the complexity of the algorithm.A new plane wave ultrasonic imaging algorithm named DSBMGCF(delay sum before multiply and generalized coherence factor) with higher imaging quality and less complexity of calculation was proposed. Then, the simulation experiment of point target and cyst target were done on Matlab by FieldII simulation tool. The imaging quality of the algorithm was verified. At the same time, the proposed algorithm was parallelized and improved, and a parallel algorithm for plane wave ultrasound imaging, PDMASGCF(parallel delay multiply and sum generalized coherence factor), which is suitable for parallel implementation on GPU was obtained. Finally, on the ordinary workstation Dell T7810 in the laboratory, the verification experiments on time and quality of imaging were carried out. Higher imaging frame rate was obtained, while better imaging performance was guaranteed.

Key words: plane wave, DMAS(delay multiply and sum), contrast signal-to-noise ratio, graphic processing unit(GPU), parallel

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