Paperdoi:10.3390/bioengineering10010101

Comparing Remote Speckle Plethysmography and Finger-Clip Photoplethysmography with Non-Invasive Finger Arterial Pressure Pulse Waves, Regarding Morphology and Arrival Time

Venue listed2023Added Oct 29, 2026

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Authors: Jorge Herranz Olazábal, Fokko Pieter Wieringa, Evelien Hermeling, Chris A. Van Hoof (Imec the Netherlands; IMEC)

Bioengineering 10(1):101, 2023

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Jorge Herranz Olazabal et al., "Comparing Remote Speckle Plethysmography and Finger-Clip Photoplethysmography with Non-Invasive Finger Arterial Pressure Pulse Waves, Regarding Morphology and Arrival Time", doi:10.3390/bioengineering10010101, CC BY 4.0

TL;DR

Remote speckle plethysmography (SPG) from a camera and a 639 nm laser was compared with a clinical finger-clip PPG, using finger arterial pressure as the reference. Across 2,599 beats the SPG pulse shape matched the arterial pressure waveform about twice as closely as PPG (deviation 0.09 vs 0.17). Pulse arrival times were similar for both.

  • Form factor: camera

Abstract

Objective: The goal was to compare Speckle plethysmography (SPG) and Photoplethysmography (PPG) with non-invasive finger Arterial Pressure (fiAP) regarding Pulse Wave Morphology (PWM) and Pulse Arrival Time (PAT). Methods: Healthy volunteers (n = 8) were connected to a Non-Invasive Blood Pressure (NIBP) monitor providing fiAP pulse wave and PPG from a clinical transmission-mode SpO2 finger clip. Biopac recorded 3-lead ECG. A camera placed at a 25 cm distance recorded a video stream (100 fps) of a finger illuminated by a laser diode at 639 nm. A chest belt (Polar) monitored respiration. All signals were recorded simultaneously during episodes of spontaneous breathing and paced breathing. Analysis: Post-processing was performed in Matlab to obtain SPG and analyze the SPG, PPG and fiAP mean absolute deviations (MADs) on PWM, plus PAT modulation. Results: Across 2599 beats, the average fiAP MAD with PPG was 0.17 (0–1) and with SPG 0.09 (0–1). PAT derived from ECG–fiAP correlated as follows: 0.65 for ECG–SPG and 0.67 for ECG–PPG. Conclusion: Compared to the clinical NIBP monitor fiAP reference, PWM from an experimental camera-derived non-contact reflective-mode SPG setup resembled fiAP significantly better than PPG from a simultaneously recorded clinical transmission-mode finger clip. For PAT values, no significant difference was found between ECG–SPG and ECG–PPG compared to ECG–fiAP.

Verbatim from the publisher's DOI record (opens in a new tab) · Publisher licence: https://creativecommons.org/licenses/by/4.0/

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Tasks & signals

Tasks

Pulse arrival timeBlood pressure

Keywords

Speckle PlethysmographyMorphologyPulse Arrival TimeArterial PressureImecBP

How it works

How Method works: Setup → Method → TargetSetup: Signals (rSPG, PPG, fiAP ref, ECG); Wavelengths (639 nm); Form factor (camera). Method: Method. Target: Pulse arrival time; Blood pressure.SetupSignals: rSPG, PPG, fiAP ref, ECGSignalsrSPG, PPG, fiAP ref, ECGWavelengths: 639 nmWavelengths639 nmForm factor: cameraForm factorcameraMethodMethodTargetPulse arrival timePulse arrival timeBlood pressureBlood pressure
Wavelengths
639 nm

Cite this paper

Cite this paper with the fields recorded here. Check it against the publisher before submitting.

Olazábal, J. H., Wieringa, F. P., Hermeling, E., & Van Hoof, C. A. (2023). Comparing Remote Speckle Plethysmography and Finger-Clip Photoplethysmography with Non-Invasive Finger Arterial Pressure Pulse Waves, Regarding Morphology and Arrival Time. Bioengineering , 2023, 10(1), 101. https://doi.org/10.3390/bioengineering10010101
Olazábal, Jorge Herranz, Fokko Pieter Wieringa, Evelien Hermeling, and Chris A. Van Hoof. 2023. "Comparing Remote Speckle Plethysmography and Finger-Clip Photoplethysmography with Non-Invasive Finger Arterial Pressure Pulse Waves, Regarding Morphology and Arrival Time." Bioengineering , 2023 10 (1): 101. https://doi.org/10.3390/bioengineering10010101.
Olazábal, J. H., Wieringa, F. P., Hermeling, E. and Van Hoof, C. A. (2023) 'Comparing Remote Speckle Plethysmography and Finger-Clip Photoplethysmography with Non-Invasive Finger Arterial Pressure Pulse Waves, Regarding Morphology and Arrival Time', Bioengineering , 2023, 10(1), p. 101. doi: 10.3390/bioengineering10010101.
Olazábal, Jorge Herranz, et al. "Comparing Remote Speckle Plethysmography and Finger-Clip Photoplethysmography with Non-Invasive Finger Arterial Pressure Pulse Waves, Regarding Morphology and Arrival Time." Bioengineering , 2023, vol. 10, no. 1, 2023, p. 101. https://doi.org/10.3390/bioengineering10010101.
J. H. Olazábal, F. P. Wieringa, E. Hermeling, and C. A. Van Hoof, "Comparing Remote Speckle Plethysmography and Finger-Clip Photoplethysmography with Non-Invasive Finger Arterial Pressure Pulse Waves, Regarding Morphology and Arrival Time," Bioengineering , 2023, vol. 10, no. 1, p. 101, 2023, doi: 10.3390/bioengineering10010101.
@article{olazabal2023comparing,
  title         = {{Comparing Remote Speckle Plethysmography and Finger-Clip Photoplethysmography with Non-Invasive Finger Arterial Pressure Pulse Waves, Regarding Morphology and Arrival Time}},
  author        = {Olazábal, Jorge Herranz and Wieringa, Fokko Pieter and Hermeling, Evelien and Van Hoof, Chris A.},
  year          = {2023},
  journal       = {Bioengineering , 2023},
  volume        = {10},
  number        = {1},
  pages         = {101},
  doi           = {10.3390/bioengineering10010101}
}

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