In vitro comparison of different signal processing algorithms used in laser Doppler flowmetry

1993 ◽  
Vol 31 (1) ◽  
pp. 43-52 ◽  
Author(s):  
A. N. Obeid
Keyword(s):  
Signal Processing ◽  
Laser Doppler Flowmetry ◽  
Laser Doppler ◽  
Doppler Flowmetry ◽  
Signal Processing Algorithms ◽  
Processing Algorithms ◽  
In Vitro Comparison

Higher-order spectral analysis in laser-Doppler flowmetry signal processing

1999 ◽  
Vol 7 (2-3) ◽  
pp. 85-101 ◽  
Author(s):  
Vassilios Alexopoulos ◽  
Stefanos Kollias ◽  
Philippe Leger ◽  
Henry Boccalon ◽  
Zoltan Csiki
Keyword(s):  
Signal Processing ◽  
Spectral Analysis ◽  
Laser Doppler Flowmetry ◽  
Higher Order ◽  
Laser Doppler ◽  
Doppler Flowmetry

Transcutaneous Delivery of Prostaglandin E1: In Vitro and Laser Doppler Flowmetry Study

1998 ◽  
Vol 87 (6) ◽  
pp. 721-725 ◽  
Author(s):  
M. Foldvari ◽  
C.J.N. Oguejiofor ◽  
T.W. Wilson ◽  
S.K. Arridi ◽  
T.A. Kudel
Keyword(s):  
Laser Doppler Flowmetry ◽  
Prostaglandin E1 ◽  
Laser Doppler ◽  
Doppler Flowmetry ◽  
Transcutaneous Delivery

Evaluation of laser-Doppler flowmetry as a measure of tissue blood flow

1986 ◽  
Vol 61 (2) ◽  
pp. 666-672 ◽  
Author(s):  
G. J. Smits ◽  
R. J. Roman ◽  
J. H. Lombard
Keyword(s):  
Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Electromagnetic Flowmeter ◽  
Laser Doppler ◽  
Tissue Blood Flow ◽  
Organ Blood Flow ◽  
Doppler Flowmetry ◽  
Laser Doppler Flow ◽  
Doppler Flow

In this study the technique of laser-Doppler flowmetry was evaluated for the measurement of tissue blood flow by comparing laser-Doppler flow (LDF) signal in the renal cortex, gracilis muscle, and cremaster muscle of anesthetized rats to whole-organ blood flow measured with an electromagnetic flowmeter or radioactive microspheres. In vitro, LDF signal was closely correlated (r = 0.99) to changes in erythrocyte velocity generated with a rotating wheel. Although individual LDF readings varied in situ, mean LDF signal calculated from multiple readings on the tissue surface were significantly correlated (r = 0.74–0.95) with tissue blood flows measured at various perfusion pressures. However, significant differences in the slope of the LDF signal vs. blood flow relationship were observed in different tissues and with different methods of measurement in the same tissue. This study indicates that mean laser-Doppler flow signal provides a good estimate of tissue blood flow, provided a sufficient number of points is scanned. However, there appears to be no universal calibration factor for the method.

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