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Acta Optica Sinica, Volume. 42, Issue 7, 0717001(2022)

Laparoscopic Laser Speckle Blood Flow Imaging Technology

Qiong Wu1,2, Wei Zhou1, Baoteng Xu1,3, Jialin Liu1、**, Xibin Yang1,3、*, Chi Wang2, and Daxi Xiong1
Author Affiliations
  • 1Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, China
  • 2School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
  • 3School of Biomedical Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (8)
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    Laparoscopic LSCI system. (a) Schematic of experimental device; (b) physical drawings of experimental device

    Fig. 1. Laparoscopic LSCI system. (a) Schematic of experimental device; (b) physical drawings of experimental device

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    Flowchart of quantitative blood flow measurement under single exposure LSCI

    Fig. 2. Flowchart of quantitative blood flow measurement under single exposure LSCI

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    Measurement results of spatial speckle contrast Ks2 of three channels under different volume flux

    Fig. 3. Measurement results of spatial speckle contrast Ks2 of three channels under different volume flux

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    Measurement results of ICTD and dynamic scattering parameter ρ of three channels at volume flux of 50 μL/min

    Fig. 4. Measurement results of ICTD and dynamic scattering parameter ρ of three channels at volume flux of 50 μL/min

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    ICTD measurement results of three channels and their linear fitting curves under different volume flux

    Fig. 5. ICTD measurement results of three channels and their linear fitting curves under different volume flux

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    Comparison of ICTD measurements between LSCI and MESI based single exposure in different channels. (a) 0.4 mm; (b) 0.8 mm; (c) 1.2 mm

    Fig. 6. Comparison of ICTD measurements between LSCI and MESI based single exposure in different channels. (a) 0.4 mm; (b) 0.8 mm; (c) 1.2 mm

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    Results of animal experiments. (a) Pre-blocking image; (b) post-blocking image; (c) reperfusion image; (d) relative velocity curve

    Fig. 7. Results of animal experiments. (a) Pre-blocking image; (b) post-blocking image; (c) reperfusion image; (d) relative velocity curve

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    • Table 1. Estimated flow velocity of each pipe under different volume flux

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      Table 1. Estimated flow velocity of each pipe under different volume flux

      Volum flux /(μL·min-1)Expected flow velocity ineach channel /(mm·s-1)
      d=0.4 mmd=0.8 mmd=1.2 mm
      0000
      101.330.330.15
      202.650.660.29
      303.981.000.44
      405.311.330.59
      506.641.660.74
      607.961.990.88
      709.292.321.03
      8010.622.651.18
      9011.942.991.33
      10013.273.321.47
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    Qiong Wu, Wei Zhou, Baoteng Xu, Jialin Liu, Xibin Yang, Chi Wang, Daxi Xiong. Laparoscopic Laser Speckle Blood Flow Imaging Technology[J]. Acta Optica Sinica, 2022, 42(7): 0717001

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    Paper Information

    Category: Medical optics and biotechnology

    Received: Jun. 2, 2021

    Accepted: Sep. 22, 2021

    Published Online: Mar. 28, 2022

    The Author Email: Liu Jialin (liujl@sibet.ac.cn), Yang Xibin (yangxb@sibet.ac.cn)

    DOI:10.3788/AOS202242.0717001

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology