A Simple and Low-cost Approach to Blood Flow Monitoring Using Speckle Contrast Technique

A laser speckle contrast imaging (LSI) setup has been designed and used to estimate heartbeat rate and microvascular perfusion non-invasively. LSI measurements were performed on the human index finger and thumb during various finger perfusion conditions, such as before and after gently rubbing of a...

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Main Authors: Ma, Haiyan, Wijshoff, Ralph, Mader, Sebastian, Veen, Jeroen, Van Der Mark, Martin, Bhattacharya, Nandini, Urbach, Paul
Format: Conference Proceeding
Language:English
Subjects:
Blood flow
Cameras
Dynamic tests
Dynamics
Estimates
Fingers
Guidelines
Healing
Human
Imaging
Large scale integration
Lasers
Mathematical models
Monitoring
Noise
Rubbing
Signal to noise ratio
Systems design
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container_start_page 50
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creator Ma, Haiyan
Wijshoff, Ralph
Mader, Sebastian
Veen, Jeroen
Van Der Mark, Martin
Bhattacharya, Nandini
Urbach, Paul
description A laser speckle contrast imaging (LSI) setup has been designed and used to estimate heartbeat rate and microvascular perfusion non-invasively. LSI measurements were performed on the human index finger and thumb during various finger perfusion conditions, such as before and after gently rubbing of a finger or the healing of a small inflammation of the eponychium on the finger. Heartbeat was retrieved with 0.5 to 10ms exposure time using LASCA (Laser Speckle Contrast Analysis) and dLASCA (dynamic Laser Speckle Contrast Analysis) processing methods. Additionally, a noise analysis model for laser speckle contrast imaging was established to evaluate Signal to Noise Ratio (SNR) in speckle imaging and provide a guideline for camera selection and imaging system design.
doi_str_mv 10.1063/1.3455488
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source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)
subjects Blood flow
Cameras
Dynamic tests
Dynamics
Estimates
Fingers
Guidelines
Healing
Human
Imaging
Large scale integration
Lasers
Mathematical models
Monitoring
Noise
Rubbing
Signal to noise ratio
Systems design
title A Simple and Low-cost Approach to Blood Flow Monitoring Using Speckle Contrast Technique
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