Skin temperature variations as a tracer of microvessel tone

Frick, Peter; Mizeva, Irina; Podtaev, Sergey

doi:10.1016/j.bspc.2015.04.014

Cited by 43 publications

(33 citation statements)

References 23 publications

(36 reference statements)

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“…Considering sensitivity equal to 0.02 °C the curve shows that the upper limit of permissible frequency for my thermal imaging camera is equal to 0.1 Hz. Similar results have been reported previously in [6,7] for the contact skin temperature measurements.…”

supporting

confidence: 80%

Spectral filtering approach to the skin blood flow imaging in limbs via infrared thermography: its scope and limits

Sagaidachnyi¹,

Fomin²,

Skripal³

et al. 2016

Proceedings of the 2016 International Conference on Quantitative InfraRed Thermography

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We develop the new technique for skin blood flow imaging in limbs by means of infrared thermography. In contrast to the lock-in and pulsed phase thermography the proposed method does not use an external heater. Instead, we consider variation of blood volume within the vessels of limbs as a source of thermal waves, travelling through the biotissue. Thus, the blood flow dynamics serves as a non-periodical heater of biological tissue. To reconstruct the blood flow variation from dynamic thermograms we used the spectral filtering approach (SFA), which transforms the temperature signal into the blood flow signal. Reaction of lower limbs on the thermal impact is illustrated by examples of dynamics blood flow maps that are extracted from dynamic thermograms. Limitations and advantages of the blood flow exploration via infrared thermography within each of the frequency range have been discussed.

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supporting

confidence: 80%

Spectral filtering approach to the skin blood flow imaging in limbs via infrared thermography: its scope and limits

Sagaidachnyi¹,

Fomin²,

Skripal³

et al. 2016

Proceedings of the 2016 International Conference on Quantitative InfraRed Thermography

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“…A cross-spectral analysis of the variations in blood pressure wave forms and temperature shows a high degree of correlation between the spontaneous fluctuations of ST and the vasomotor activity of small arteries and arterioles in subcutaneous tissues [44]. Application of the wavelet correlation method shows that in the frequency interval corresponding to myogenic, neurogenic, and endothelial mechanisms of regulation of the microvascular tone, temperature fluctuations are correlated with microcirculation fluctuations [2,11,35]. Weak phase coherence between temperature and blood flow was observed for unperturbed skin, and due to heating it increased in all frequency intervals [42].…”

Section: Skin Temperature Measurementmentioning

confidence: 99%

“…Information about cutaneous microcirculation can also be obtained by recording low‐amplitude ST oscillations. A report of highly reliable correlations between temperature fluctuations and changes in the skin blood flow in the frequency band 0.01–0.1 Hz and ST clearly demonstrates that WAST in the appropriate frequency intervals can be effectively used to assess the mechanisms of microvascular regulation . A pronounced endothelium‐dependent vasodilation in human skin is achieved with local heating to 42°C .…”

Section: Introductionmentioning

confidence: 96%

Detection of Endothelial Dysfunction Using Skin Temperature Oscillations Analysis During Local Heating in Patients With Peripheral Arterial Disease

et al. 2016

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“…Previously, the calculation of wavelet‐based coherence was carried out to study the relationship among skin temperature, blood flow, tissue saturation, electrocardiography signals, etc. This tool revealed significant relationships between skin temperature oscillations and peripheral blood flow , tissue saturation and peripheral blood flow , peripheral blood flow of contralateral skin sites .…”

Section: Methodsmentioning

confidence: 99%

Dynamic evaluation of blood flow microcirculation by combined use of the laser Doppler flowmetry and high‐speed videocapillaroscopy methods

Dremin

Kozlov

Volkov

et al. 2019

Journal of Biophotonics

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The dynamic light scattering methods are widely used in biomedical diagnostics involving evaluation of blood flow. However, there exist some difficulties in quantitative interpretation of backscattered light signals from the viewpoint of diagnostic information. This study considers the application of the high‐speed videocapillaroscopy (VCS) method that provides the direct measurement of the red blood cells (RBCs) velocity into a capillary. The VCS signal presents true oscillation nature of backscattered light caused by moving RBCs. Thus, the VCS signal can be assigned as a reference one with respect to more complicated signals like in laser Doppler flowmetry (LDF). An essential correlation between blood flow velocity oscillations in a separate human capillary and the integral perfusion estimate obtained by the LDF method has been found. The observation of blood flow by the VCS method during upper arm occlusion has shown emergence of the reverse blood flow effect in capillaries that corresponds to the biological zero signal in the LDF. The reverse blood flow effect has to be taken into account in interpretation of LDF signals.

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Skin temperature variations as a tracer of microvessel tone

Cited by 43 publications

References 23 publications

Spectral filtering approach to the skin blood flow imaging in limbs via infrared thermography: its scope and limits

Spectral filtering approach to the skin blood flow imaging in limbs via infrared thermography: its scope and limits

Detection of Endothelial Dysfunction Using Skin Temperature Oscillations Analysis During Local Heating in Patients With Peripheral Arterial Disease

Dynamic evaluation of blood flow microcirculation by combined use of the laser Doppler flowmetry and high‐speed videocapillaroscopy methods

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