Laser & Optoelectronics Progress, Volume. 56, Issue 2, 021701(2019)

Real-Time Synthetic-Aperture Imaging Algorithm for Ultrasonic Endoscopy Based on Coherence Factor

Yuze Xiao, Xiaodong Chen*, Yong Xu, Jin Yang, Jing Sheng, Haolin Liang, and Yi Wang
Author Affiliations
  • Key Laboratory of Optoelectronic Information Technology, Ministry of Education, College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
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    Figures & Tables(12)
    Implementation of SA
    Calculation of transit time
    Implementation process of parallel processing
    Processing results of SA and CFSA algorithms on CPU platform. (a) Imaging result of SA algorithm; (b) imaging result of CFSA algorithm
    Transverse energy distribution of SA and CFSA algorithms. (a) z=40 mm; (b) z=35 mm
    Processing results of CFSA algorithms on CPU and GPU. (a) Imaging result of CPU platform; (b) imaging result of GPU platform
    Processing results of SA and CFSA algorithms on CPU platform. (a) Imaging result of SA algorithm; (b) imaging result of CFSA algorithm
    • Table 1. Simulation experimental parameters

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      Table 1. Simulation experimental parameters

      ParameterValue
      Ultrasonic velocity in body /(m·s-1)1540
      Center frequency of transducer /MHz7
      Sampling frequency /MHz180
      Array element width /mm0.2400
      Transducer interval /mm0.145
      Number of element64
    • Table 2. Imaging error rate

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      Table 2. Imaging error rate

      Data sizeTotal number of pointsError pointsError rate /%
      5305×59×64×8 bit5305×597260.232
    • Table 3. Consuming time of various parallel acceleration methods

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      Table 3. Consuming time of various parallel acceleration methods

      Parallel acceleration methodConsuming time /s
      Simple parallel acceleration2.77
      Shared memory2.56
      Two-dimensional thread0.81
      Optimization of thread allocation2.11
      Reduce number of memory replicas1.31
      Algorithm optimization2.12
      Synthesis of the above methods0.17
    • Table 4. Lateral resolution of SA and CFSA algorithms

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      Table 4. Lateral resolution of SA and CFSA algorithms

      Investigation depth z /mmResolution of SAResolution of CFSAResolution enhancement /%
      75.52.651.3150.6
      77.52.901.3553.4
    • Table 5. Consuming time of SA and CFSA algorithms

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      Table 5. Consuming time of SA and CFSA algorithms

      Data sizeSACFSASpeed upratio
      Consumingtime for CPU /sConsumingtime for CPU /sConsumingtime for GPU /s
      1063×760×64×8 bit78.2080.020.12667
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    Yuze Xiao, Xiaodong Chen, Yong Xu, Jin Yang, Jing Sheng, Haolin Liang, Yi Wang. Real-Time Synthetic-Aperture Imaging Algorithm for Ultrasonic Endoscopy Based on Coherence Factor[J]. Laser & Optoelectronics Progress, 2019, 56(2): 021701

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    Paper Information

    Category: Medical Optics and Biotechnology

    Received: Jun. 15, 2018

    Accepted: Jul. 30, 2018

    Published Online: Aug. 1, 2019

    The Author Email: Chen Xiaodong (xdchen@tju.edu.cn)

    DOI:10.3788/LOP56.021701

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