Evaluation of different signal processing algorithms in laser-Doppler perfusion measurements

Martin Leahy; Adam Liebert; Roman Maniewski

doi:10.1117/12.475836

Evaluation of different signal processing algorithms in laser-Doppler perfusion measurements

Martin Leahy, Adam Liebert, Roman Maniewski

Research output: Contribution to a Journal (Peer & Non Peer) › Conference article › peer-review

Abstract

The Laser-Doppler (LD) method is extensively used in clinical experiments for microcirculation measurement The results of LD perfusion measurements depends on technical factors such as laser light wavelength, LD probe arrangement, and signal processing algorithm. The aim of this study is to compare the output of various signal processing algorithms (LDP) with the use of digital spectral analysis of the photodetector current Comparison is made with the output of a commercial LD instrument (LDF). The results obtained using a simple one-tube physical model confirm that the best linearity of response of the LD instrument for changes of flow velocity is given by the algorithm based on first moment of power spectral density of AC component of photodetector's signal.

Original language	English
Pages (from-to)	120-127
Number of pages	8
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4876
Issue number	1
DOIs	https://doi.org/10.1117/12.475836
Publication status	Published - 2002
Externally published	Yes
Event	Opto-Ireland 2002: Optics and Photonics Technologies and Applications - Galway, Ireland Duration: 5 Sep 2002 → 6 Sep 2002

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title = "Evaluation of different signal processing algorithms in laser-Doppler perfusion measurements",

abstract = "The Laser-Doppler (LD) method is extensively used in clinical experiments for microcirculation measurement The results of LD perfusion measurements depends on technical factors such as laser light wavelength, LD probe arrangement, and signal processing algorithm. The aim of this study is to compare the output of various signal processing algorithms (LDP) with the use of digital spectral analysis of the photodetector current Comparison is made with the output of a commercial LD instrument (LDF). The results obtained using a simple one-tube physical model confirm that the best linearity of response of the LD instrument for changes of flow velocity is given by the algorithm based on first moment of power spectral density of AC component of photodetector's signal.",

author = "Martin Leahy and Adam Liebert and Roman Maniewski",

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language = "English",

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journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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AU - Leahy, Martin

AU - Liebert, Adam

AU - Maniewski, Roman

PY - 2002

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N2 - The Laser-Doppler (LD) method is extensively used in clinical experiments for microcirculation measurement The results of LD perfusion measurements depends on technical factors such as laser light wavelength, LD probe arrangement, and signal processing algorithm. The aim of this study is to compare the output of various signal processing algorithms (LDP) with the use of digital spectral analysis of the photodetector current Comparison is made with the output of a commercial LD instrument (LDF). The results obtained using a simple one-tube physical model confirm that the best linearity of response of the LD instrument for changes of flow velocity is given by the algorithm based on first moment of power spectral density of AC component of photodetector's signal.

AB - The Laser-Doppler (LD) method is extensively used in clinical experiments for microcirculation measurement The results of LD perfusion measurements depends on technical factors such as laser light wavelength, LD probe arrangement, and signal processing algorithm. The aim of this study is to compare the output of various signal processing algorithms (LDP) with the use of digital spectral analysis of the photodetector current Comparison is made with the output of a commercial LD instrument (LDF). The results obtained using a simple one-tube physical model confirm that the best linearity of response of the LD instrument for changes of flow velocity is given by the algorithm based on first moment of power spectral density of AC component of photodetector's signal.

UR - https://www.scopus.com/pages/publications/0043233297

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DO - 10.1117/12.475836

M3 - Conference article

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SN - 0277-786X

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

IS - 1

T2 - Opto-Ireland 2002: Optics and Photonics Technologies and Applications

Y2 - 5 September 2002 through 6 September 2002

ER -

Evaluation of different signal processing algorithms in laser-Doppler perfusion measurements

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