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Paperdoi:10.3390/s24196374

Speckle Vibrometry for Contactless Instantaneous Heart Rate and Respiration Rate Monitoring on Mechanically Ventilated Patients

Venue listed2024Added Oct 29, 2026

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Authors: Shuhao Que, Iris C. Cramer, Lukas Dekker, Sebastiaan Overeem, R. Arthur Bouwman, Svitlana Zinger, Sander Stuijk, Fokke van Meulen (Eindhoven University of Technology; Catharina Ziekenhuis; Kempenhaeghe)

Sensors 24(19):6374, 2024

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CC BY 4.0 (OpenAlex)

TL;DR

Speckle vibrometry uses a laser and a defocused camera to detect tiny surface vibrations from the heartbeat and breathing, even through bedding. In mechanically ventilated ICU patients measured through two to three blanket layers, it tracked instantaneous heart rate within about ±2 bpm of ECG and breathing rate within about ±0.7 breaths per minute of the ventilator.

  • Form factor: camera

Abstract

Objective: Contactless monitoring of instantaneous heart rate and respiration rate has a significant clinical relevance. This work aims to use Speckle Vibrometry (i.e., based on the secondary laser speckle effect) to contactlessly measure these two vital signs in an intensive care unit. Methods: In this work, we propose an algorithm for the estimation of instantaneous heart rate and respiration rate from mechanically ventilated patients. The algorithm uses multiple regions, principal component analysis, and dominant angle analysis. A semi-automated peak detection method is implemented to precisely label the aortic valve opening peak within the cardiac waveform. Results: Compared with electrocardiography, the present work achieves limits of agreement of [−2.19, 1.73] beats per minute of instantaneous heart rate. The measurement spot is on the chest covered with two to three layers of duvet blankets. Compared with the airway flow signal measured by the mechanical ventilator, the present work achieves limits of agreement of [−0.68, 0.46] respirations per minute of instantaneous respiration rate. Conclusions: These results showcased Speckle Vibrometry’s potential in vital sign monitoring in a clinical setting. Significance: This is the first human clinical study for Speckle Vibrometry.

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

Signals

ECGspeckle vibrometry

Keywords

Speckle PlethysmographySpeckle VibrometrySecondary SpeckleContactlessICUBCG LikeTu Eindhoven

How it works

How Method works: Setup → Method → TargetSetup: Signals (speckle vibrometry, ECG ref); Wavelengths (laser (λ not in abstract)); Form factor (camera). Method: Method.SetupSignals: speckle vibrometry, ECG refSignalsspeckle vibrometry, ECG refWavelengths: laser (λ not in abstract)Wavelengthslaser (λ not in abstract)Form factor: cameraForm factorcameraMethodMethod
Wavelengths
laser (λ not in abstract)

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Que, S., Cramer, I. C., Dekker, L., Overeem, S., Bouwman, R. A., Zinger, S., Stuijk, S., & van Meulen, F. (2024). Speckle Vibrometry for Contactless Instantaneous Heart Rate and Respiration Rate Monitoring on Mechanically Ventilated Patients. Sensors , 2024, 24(19), 6374. https://doi.org/10.3390/s24196374
Que, Shuhao, Iris C. Cramer, Lukas Dekker, Sebastiaan Overeem, R. Arthur Bouwman, Svitlana Zinger, Sander Stuijk, and Fokke van Meulen. 2024. "Speckle Vibrometry for Contactless Instantaneous Heart Rate and Respiration Rate Monitoring on Mechanically Ventilated Patients." Sensors , 2024 24 (19): 6374. https://doi.org/10.3390/s24196374.
Que, S., Cramer, I. C., Dekker, L., Overeem, S., Bouwman, R. A., Zinger, S., Stuijk, S. and van Meulen, F. (2024) 'Speckle Vibrometry for Contactless Instantaneous Heart Rate and Respiration Rate Monitoring on Mechanically Ventilated Patients', Sensors , 2024, 24(19), p. 6374. doi: 10.3390/s24196374.
Que, Shuhao, et al. "Speckle Vibrometry for Contactless Instantaneous Heart Rate and Respiration Rate Monitoring on Mechanically Ventilated Patients." Sensors , 2024, vol. 24, no. 19, 2024, p. 6374. https://doi.org/10.3390/s24196374.
S. Que et al., "Speckle Vibrometry for Contactless Instantaneous Heart Rate and Respiration Rate Monitoring on Mechanically Ventilated Patients," Sensors , 2024, vol. 24, no. 19, p. 6374, 2024, doi: 10.3390/s24196374.
@article{que2024speckle,
  title         = {{Speckle Vibrometry for Contactless Instantaneous Heart Rate and Respiration Rate Monitoring on Mechanically Ventilated Patients}},
  author        = {Que, Shuhao and Cramer, Iris C. and Dekker, Lukas and Overeem, Sebastiaan and Bouwman, R. Arthur and Zinger, Svitlana and Stuijk, Sander and van Meulen, Fokke},
  year          = {2024},
  journal       = {Sensors , 2024},
  volume        = {24},
  number        = {19},
  pages         = {6374},
  doi           = {10.3390/s24196374}
}

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