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A prototype system of portable laser speckle imager based on embedded graphics processing unit platform.

Heping Chen, Peng Miao, Bin Bo

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |January 18, 2020
    PubMed
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    Researchers developed a portable laser speckle imager for blood flow measurement. This compact device offers comparable performance to lab systems, enabling easier clinical applications like intraoperative monitoring.

    Area of Science:

    • Biomedical Optics
    • Medical Imaging
    • Optical Physics

    Background:

    • Laser speckle contrast imaging (LSCI) is a valuable tool for assessing blood flow.
    • Existing LSCI systems are often large and cumbersome, restricting their use.
    • There is a need for more portable and user-friendly LSCI devices.

    Purpose of the Study:

    • To develop and evaluate a prototype portable laser speckle imager.
    • To assess the feasibility of using an embedded GPU system for real-time blood flow imaging.
    • To demonstrate the system's utility in settings requiring easy operation and portability.

    Main Methods:

    • Designed a compact LSCI system integrating an NVIDIA Jetson TX2 GPU and an LCD touchscreen.
    • Utilized embedded processing, eliminating the need for an external PC.

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  • Conducted in-vivo experiments to compare system performance against a laboratory-based LSCI system.

    • Main Results:

    • The portable GPU-based LSCI system demonstrated comparable performance to a traditional laboratory system.
    • The prototype proved effective for real-time blood flow measurement.
    • The system's compact size and ease of use were highlighted.

    Conclusions:

    • A portable, GPU-accelerated laser speckle imager has been successfully developed.
    • This portable system offers a viable alternative for blood flow monitoring in various clinical settings.
    • Potential applications include intraoperative monitoring and bedside diagnostics where portability and ease of use are critical.