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Related Experiment Video

Updated: Dec 23, 2025

A Novel Approach to Overcome Movement Artifact When Using a Laser Speckle Contrast Imaging System for Alternating Speeds of Blood Microcirculation
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Multifunctional laser speckle imaging.

E Du1, Shuhao Shen1, Shau Poh Chong1

  • 1Optical Bioimaging Laboratory, Department of Biomedical Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore.

Biomedical Optics Express
|April 29, 2020
PubMed
Summary
This summary is machine-generated.

A new laser speckle imaging system offers enhanced visualization of blood flow and tissue morphology. The line scan mode detects smaller, deeper vessels and provides depth-resolved images, improving upon surface illumination methods.

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Area of Science:

  • Biomedical Optics
  • Medical Imaging
  • Laser Physics

Background:

  • Laser speckle imaging (LSI) is a non-invasive technique for visualizing blood flow.
  • Conventional surface illumination LSI (SI-LSCI) has limitations in detecting small or deep vessels.
  • There is a need for advanced imaging modalities to provide comprehensive vascular and morphological information.

Purpose of the Study:

  • To develop and evaluate a multi-functional laser speckle imaging system.
  • To compare the capabilities of surface illumination LSI (SI-LSCI) and line scan LSI (LS-LSCI) modes.
  • To assess the system's utility in visualizing chicken embryo vasculature.

Main Methods:

  • Development of a multi-functional laser speckle imaging system capable of both SI-LSCI and LS-LSCI modes.
  • Application of the system to image chicken embryos.
  • Quantitative analysis of blood flow and morphological details.

Main Results:

  • The developed system successfully visualized blood flow and vasculature in chicken embryos.
  • Line scan LSI (LS-LSCI) detected and quantified blood flow in smaller and deeper vessels compared to SI-LSCI.
  • LS-LSCI also generated depth-resolved absorption-based morphological images.

Conclusions:

  • The multi-functional laser speckle imaging system enhances the visualization of microcirculation and tissue morphology.
  • LS-LSCI offers superior performance for detecting deep and small blood vessels.
  • The system provides complementary flow-based and morphology-based imaging for comprehensive biological studies.