Fundamental patterns and characteristics of the laser-doppler skin blood flow waves recorded from the finger or toe

Kano, Tatsuhiko; Shimoda, Osamu; Higashi, Kiichiro; Sadanaga, M; Sakamoto, Masakatsu

doi:10.1016/0165-1838(93)90051-u

Cited by 38 publications

(24 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the periphery, vessel diameter changes or vasomotion have been investigated with plethysmograph devices, 27,28 and Mayer waves have been shown in a study comparing the finger, toe, and arm as measurement sites using laser Doppler in healthy participants. 25 More interestingly, results of the latter study also demonstrated temporal synchrony between the different peripheral measurement sites in the low-frequency domain. 25 Considering that modulations in oxygen consumption, measurable with NIRS in various peripheral sites, have been investigated for the purposes of following disease progression or aging-related processes, 21 further characterization of these peripheral signals seems valuable.…”

Section: Introductionmentioning

confidence: 49%

“…25 More interestingly, results of the latter study also demonstrated temporal synchrony between the different peripheral measurement sites in the low-frequency domain. 25 Considering that modulations in oxygen consumption, measurable with NIRS in various peripheral sites, have been investigated for the purposes of following disease progression or aging-related processes, 21 further characterization of these peripheral signals seems valuable.…”

Section: Introductionmentioning

confidence: 49%

“…1(e), in which the bandpass filter (0.01-0.15 Hz) was applied to both signals to present only the LFO signal. Our previous studies 31 along with others using laser Doppler 24,25,40 suggested that these LFOs travel with the blood, and thus are closely associated with blood circulation. Consequently, the LFOs will, in general, arrive at different sites (finger and toe) at different times reflecting the pathlength, vessel size, and flow rate of the blood to the target site.…”

Section: Spectral Analysesmentioning

confidence: 99%

See 2 more Smart Citations

Low-frequency oscillations measured in the periphery with near-infrared spectroscopy are strongly correlated with blood oxygen level-dependent functional magnetic resonance imaging signals

et al. 2012

View full text Add to dashboard Cite

Abstract. Low-frequency oscillations (LFOs) in the range of 0.01-0.15 Hz are commonly observed in functional imaging studies, such as blood oxygen level-dependent functional magnetic resonance imaging (BOLD fMRI) and functional near-infrared spectroscopy (fNIRS). Some of these LFOs are nonneuronal and are closely related to autonomic physiological processes. In the current study, we conducted a concurrent resting-state fMRI and NIRS experiment with healthy volunteers. LFO data was collected simultaneously at peripheral sites (middle fingertip and big toes) by NIRS, and centrally in the brain by BOLD fMRI. The cross-correlations of the LFOs collected from the finger, toes, and brain were calculated. Our data show that the LFOs measured in the periphery (NIRS signals) and in the brain (BOLD fMRI) were strongly correlated with varying time delays. This demonstrates that some portion of the LFOs actually reflect systemic physiological circulatory effects. Furthermore, we demonstrated that NIRS is effective for measuring the peripheral LFOs, and that these LFOs and the temporal shifts between them are consistent in healthy participants and may serve as useful biomarkers for detecting and monitoring circulatory dysfunction.

show abstract

Section: Introductionmentioning

confidence: 49%

Section: Introductionmentioning

confidence: 49%

Section: Spectral Analysesmentioning

confidence: 99%

See 1 more Smart Citation

Low-frequency oscillations measured in the periphery with near-infrared spectroscopy are strongly correlated with blood oxygen level-dependent functional magnetic resonance imaging signals

et al. 2012

View full text Add to dashboard Cite

show abstract

“…This is the common nature of any tissue perfusion. There is recent evidence that the absence or presence of specific waves in the perfusion signal relates to the influence of a specific disease on the microvascular perfusion [40,41]. The perfusion signal is, however, non-stationary and spectral analysis must be carried out with this in mind.…”

Section: 6mentioning

confidence: 99%

Developments in laser Doppler blood perfusion monitoring

Leahy¹,

Mul

Nilsson

et al. 2003

SPIE Proceedings

View full text Add to dashboard Cite

This paper reviews the development and use of laser Doppler perfusion monitors and imagers. Despite their grea t success and almost universal applicability in microcirculation research, they have had great difficulty in converting to widespread clinical application. The enormous interest in microvascular blood perfusion coupled with the 'ease of use' of the technique has led to 2000+ publications citing its use. However, useful results can only be achieved with an understanding of the basic principles of the instrumentation and its application in the various clinical disciplines. The basic technical background is explored and definitions of blood perfusion and laser Doppler perfusion are established. The calibration method is then described together with potential routes to standardisation. A guide to the limitations in application of the technique gives the user a clear indication of what can be achieved in new studies as well as possible inadequacy in some published investigations. Finally some clinical applications have found acceptability and these will be explored.

show abstract

“…[16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] the TPP value as compared with that of TRR.…”

mentioning

confidence: 99%

Comparable Accuracy of Micro-Electromechanical Blood Flowmetry-Based Analysis vs. Electrocardiography-Based Analysis in Evaluating Heart Rate Variability

Akiyama

Miyazaki

Ito

et al. 2015

Circ J

View full text Add to dashboard Cite

Fundamental patterns and characteristics of the laser-doppler skin blood flow waves recorded from the finger or toe

Cited by 38 publications

References 14 publications

Low-frequency oscillations measured in the periphery with near-infrared spectroscopy are strongly correlated with blood oxygen level-dependent functional magnetic resonance imaging signals

Low-frequency oscillations measured in the periphery with near-infrared spectroscopy are strongly correlated with blood oxygen level-dependent functional magnetic resonance imaging signals

Developments in laser Doppler blood perfusion monitoring

Comparable Accuracy of Micro-Electromechanical Blood Flowmetry-Based Analysis vs. Electrocardiography-Based Analysis in Evaluating Heart Rate Variability

Contact Info

Product

Resources

About