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Related Experiment Video

Updated: May 10, 2026

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

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

Published on: August 30, 2017

Laser speckle contrast imaging: theoretical and practical limitations.

David Briers¹, Donald D Duncan, Evan Hirst

¹Kingston University, United Kingdom. David.Briers@physics.org

Journal of Biomedical Optics

|June 29, 2013

Summary

Laser speckle contrast imaging (LSCI) analyzes movement by measuring speckle pattern blurring. This technique maps flow systems, like blood flow, using standard cameras without complex scanning.

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How to Build a Laser Speckle Contrast Imaging (LSCI) System to Monitor Blood Flow

How to Build a Laser Speckle Contrast Imaging (LSCI) System to Monitor Blood Flow

Published on: November 11, 2010

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Last Updated: May 10, 2026

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

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

Published on: August 30, 2017

How to Build a Laser Speckle Contrast Imaging (LSCI) System to Monitor Blood Flow

How to Build a Laser Speckle Contrast Imaging (LSCI) System to Monitor Blood Flow

Published on: November 11, 2010

Area of Science:

Biomedical Optics
Non-invasive Imaging
Fluid Dynamics

Background:

Laser light creates speckle patterns on diffuse objects.
Object movement causes speckle intensity fluctuations.
Speckle contrast reduction indicates velocity.

Purpose of the Study:

Review the development of Laser Speckle Contrast Imaging (LSCI).
Investigate the limitations and problems associated with LSCI.
Highlight LSCI's application in mapping flow systems, particularly blood flow.

Main Methods:

Imaging speckle patterns with exposure times longer than fluctuation timescales.
Analyzing speckle contrast reduction to determine velocity distributions.
Utilizing standard CCD or CMOS cameras, avoiding scanning or high-speed imaging.

Main Results:

Speckle contrast variations directly correlate with velocity distributions.
LSCI provides a method to map flow without beam scanning or high-speed cameras.
The technique is effective for mapping flow systems, especially biological ones.

Conclusions:

LSCI offers a simplified approach to flow mapping compared to Doppler methods.
The technique's reliance on standard cameras makes it accessible.
Further investigation into LSCI's limitations is necessary for broader application.