New signal analysis methods for laser doppler flowmetric recordings

G. E. Drăgănescu; Carmen Todea

doi:10.1117/12.2044179

14 January 2014 New signal analysis methods for laser doppler flowmetric recordings

G. E. Drăgănescu, Carmen Todea

Proceedings Volume 8925, Fifth International Conference on Lasers in Medicine: Biotechnologies Integrated in Daily Medicine; 89250M (2014) https://doi.org/10.1117/12.2044179
Event: Fifth International Conference on Lasers in Medicine, 2013, Timisoara, Romania

Abstract

The laser Doppler flowmetry devices give a series of information like the blood flux and some statistical parameters, automatically estimated. There are also new important attempts based on the Fourier transform of the flow flux signal which gather more information from the laser Doppler flowmetry. The amplitude spectra estimated in these articles, exhibit a series of peaks corresponding to the cardiac variation of the blood flow and noise components of the flow flux signals, dependent on the state of the tooth.

The aim of our investigations is to introduce new signal processing methods, based on wavelet continuous tranform, which express in a more sensitive manner the modifications of the flow flux signal with the state of the tooth, and to introduce new quantitative parameters, defined in a previous paper. These parameters express, in a more sensitive manner the modifications of the pulp flow flux signal in relation with the pulp tooth healt, and to introduce new quantitative parameters, defined in a previous paper. These parameters express, in a sensitive way the changes of the blood flux.

For practical investigations we used a series of signals recorded with the aid of a Laser Doppler Blood Flow Monitoring device (Moor Instruments) and processed with the computer.

Citation Download Citation

G. E. Drăgănescu and Carmen Todea "New signal analysis methods for laser doppler flowmetric recordings", Proc. SPIE 8925, Fifth International Conference on Lasers in Medicine: Biotechnologies Integrated in Daily Medicine, 89250M (14 January 2014); https://doi.org/10.1117/12.2044179

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