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Related Experiment Video

Updated: Jun 5, 2026

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Portable laser speckle perfusion imaging system based on digital signal processor.

Xuejun Tang1, Nengyun Feng, Xiaoli Sun

  • 1Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.

The Review of Scientific Instruments
|January 5, 2011
PubMed
Summary

A new portable laser speckle perfusion imaging system uses a digital signal processor (DSP) for efficient blood flow monitoring. This compact device offers high-speed, in vivo imaging crucial for clinical diagnosis and research.

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Area of Science:

  • Biomedical Engineering
  • Medical Imaging
  • Physiology

Background:

  • In vivo blood flow monitoring is vital for clinical diagnosis and life science research.
  • Laser Speckle Contrast Imaging (LSCI) offers noninvasive, high-resolution blood flow assessment but typically requires large, PC-based systems.
  • Current LSCI systems' size and processing demands limit their clinical utility and portability.

Purpose of the Study:

  • To develop a portable laser speckle perfusion imaging system for efficient clinical blood flow monitoring.
  • To overcome the limitations of bulky, PC-dependent LSCI systems.
  • To create a lightweight, energy-efficient system without compromising processing speed.

Main Methods:

  • Development of a portable laser speckle perfusion imaging system utilizing a digital signal processor (DSP).

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  • Implementation of a DSP-optimized algorithm for processing laser speckle contrast images.
  • Integration of DSP and algorithm to reduce system size, weight, and energy consumption.

    • Main Results:

    • The portable system achieves high-speed blood flow imaging at 25 frames per second.
    • Image resolution is maintained at 640 × 480 pixels.
    • Significant reduction in system size, weight, and energy consumption was achieved.

    Conclusions:

    • The developed portable laser speckle perfusion imaging system provides efficient, high-resolution blood flow monitoring.
    • Its compact and lightweight design enhances clinical utility and broadens application areas.
    • The system is suitable for diverse settings including laboratories, operating rooms, ambulances, and disaster sites.