The wavelet analysis for the assessment of microvascular function with the laser Doppler fluxmetry over the last 20 years. Looking for hidden informations

2018 ◽  
Vol 70 (2) ◽  
pp. 213-229 ◽  
Author(s):  
Romeo Martini ◽  
Andrea Bagno
Keyword(s):  
Wavelet Analysis ◽  
Microvascular Function ◽  
Laser Doppler ◽  
Laser Doppler Fluxmetry

Non-linear analysis of skin blood flow in patients suffering from chronic venous leg ulcers

Phlebologie ◽  
2009 ◽  
Vol 38 (02) ◽  
pp. 64-70
Author(s):  
K. Bräuer ◽  
C. Radke ◽  
A. Strölin ◽  
H.-M. Häfner
Keyword(s):  
Time Series ◽  
Blood Flow ◽  
Wavelet Analysis ◽  
Chronic Venous Insufficiency ◽  
Healthy Subjects ◽  
Venous Insufficiency ◽  
Laser Doppler ◽  
Healthy Controls ◽  
Laser Doppler Fluxmetry ◽  
Significant Difference

SummaryThe elevated ambulatory pressure in the peripheral venous system in patients suffering from chronic venous insufficiency manifests itself not only in the form of disturbed macrocirculation but also and particularly in microangiopathic changes. Laser Doppler fluxmetry is a well established method to measure cutaneous blood flow. Aim of the study was to investigate the cutaneous vasomotion at the inner ankle in patients suffering from chronic venous insufficiency in the clinical stadium C6 compared to healthy subjects. Patients, methods: In 38 patients suffering from venous ulcer and in 33 healthy subjects continous time series of Laser Doppler fluxmetry (LDF) data were recorded with a sampling frequency of 50 Hz over a period of 15 min. The patients were supine and LDF was measured at the inner ankle. Time series were analyzed using newly developed methods (wavelet analysis and biorthogenal decomposition). Results: There was a statistically significant difference in mean LDF between patients and healthy controls (94 SD 65 AU [C6] vs. 28 SD 13 AU (C0), p < 0.001). There also were statistically significant differences in the scaling levels using wavelet analysis corresponding to sympathetic activity, corresponding to myogenic activity in the vessel wall and corresponding to the heart beat. Conclusion: There are changes in vasomotion between patients with venous ulcers and healthy controls. We found a vasale neuropathy and a high degree in dysregulating skin perfusion. The new innovative strategies are suited for describing microcirculation and controlling therapies.

scholarly journals Exercise and Repeated Testing Improves Accuracy of Laser Doppler Assessment of Microvascular Function Following Shortened (1-minute) Blood Flow Occlusion

2016 ◽  
Vol 23 (4) ◽  
pp. 293-300 ◽  
Author(s):  
Brian D. Tran ◽  
Abraham Chiu ◽  
Charlene Tran ◽  
Danica Rose Rogacion ◽  
Nicole Tfaye ◽  
...  
Keyword(s):  
Blood Flow ◽  
Microvascular Function ◽  
Laser Doppler ◽  
Repeated Testing ◽  
Blood Flow Occlusion ◽  
Flow Occlusion

The NO release test as a functional reference standard for laser Doppler fluxmetry in cutaneous microangiology

2001 ◽  
Vol 7 (3) ◽  
pp. 172-175 ◽  
Author(s):  
Johannes Wohlrab ◽  
Ramona Körting ◽  
Peter Helmbold ◽  
Wolfgang Ch. Marsch
Keyword(s):  
Laser Doppler ◽  
Reference Standard ◽  
Laser Doppler Fluxmetry ◽  
Release Test ◽  
No Release

Wavelet analysis of laser Doppler flux time series of tumor and inflammatory associated neoangiogenesis. Differences in rhythmical behavior

2009 ◽  
Vol 43 (3) ◽  
pp. 189-199
Author(s):  
Hans-Martin Häfner ◽  
Kurt Bräuer ◽  
Carolin Radke ◽  
Martin Eichner ◽  
Anke Strölin
Keyword(s):  
Time Series ◽  
Wavelet Analysis ◽  
Laser Doppler ◽  
Doppler Flux

Evaluation of Laser-Doppler-Fluxmetry for the diagnosis of microcirculatory disorders

2019 ◽  
Vol 71 (2) ◽  
pp. 129-135 ◽  
Author(s):  
C. Mrowietz ◽  
R.P. Franke ◽  
G. Pindur ◽  
R. Sternitzky ◽  
F. Jung ◽  
...  
Keyword(s):  
Laser Doppler ◽  
Laser Doppler Fluxmetry ◽  
Microcirculatory Disorders
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