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Paperdoi:10.1109/embc.2019.8857036

A Pulsatile Optical Tissue Phantom for the Investigation of Light-Tissue Interaction in Reflectance Photoplethysmography

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Authors: Michelle Nomoni, James M. May, Panayiotis A. Kyriacou

2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

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TL;DR

The aim of this study was to investigate the effect of emitter-detector separation distance and arterial depth in reflectance photoplethysmography (PPG), utilizing a homogenous pulsatile phantom that exhibits the broad optical absorbance and scattering properties of human tissue. The developed phantom comprised of embedded silicone arteries (outer diameter = 4 mm) that were arranged parallel to one another at nine increasing depths (3.2 mm to 24.4 mm). A pulsatile pump (Harvard Apparatus, MA, USA) circulated a blood imitating fluid through the vessels at the desired heart rate (60 bpm) and stroke volume (5 Lmin-1).

  • Published in 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) (2019).

Abstract

The aim of this study was to investigate the effect of emitter-detector separation distance and arterial depth in reflectance photoplethysmography (PPG), utilizing a homogenous pulsatile phantom that exhibits the broad optical absorbance and scattering properties of human tissue. The developed phantom comprised of embedded silicone arteries (outer diameter = 4 mm) that were arranged parallel to one another at nine increasing depths (3.2 mm to 24.4 mm). A pulsatile pump (Harvard Apparatus, MA, USA) circulated a blood imitating fluid through the vessels at the desired heart rate (60 bpm) and stroke volume (5 Lmin-1). The PPG sensor's emitter and detector were isolated on a translation bridge to provide a computer-controlled separation distance between them. Recordings were taken at each vessel depth for emitter-detector separation distances from 2 mm to 8 mm in 0.1 mm steps. The optimum separation distance between the emitter and detector for vessels between depths of 3.2 mm and 10.5 mm was between 3.7 and 4.3 mm, suggesting that the maximum penetration of IR (930 nm) light in a homogenous pulsatile phantom is no greater than 10.5 mm.

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Tasks & signals

Signals

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Keywords

Kyriacou BibliographyOptical Modelling Phantoms

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How Method works: Setup → Method → TargetSetup: Signals (PPG). Method: Method.SetupSignals: PPGSignalsPPGMethodMethod

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Nomoni, M., May, J. M., & Kyriacou, P. A. (2019). A Pulsatile Optical Tissue Phantom for the Investigation of Light-Tissue Interaction in Reflectance Photoplethysmography. 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society. https://doi.org/10.1109/embc.2019.8857036
Nomoni, Michelle, James M. May, and Panayiotis A. Kyriacou. 2019. "A Pulsatile Optical Tissue Phantom for the Investigation of Light-Tissue Interaction in Reflectance Photoplethysmography." 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society. https://doi.org/10.1109/embc.2019.8857036.
Nomoni, M., May, J. M. and Kyriacou, P. A. (2019) 'A Pulsatile Optical Tissue Phantom for the Investigation of Light-Tissue Interaction in Reflectance Photoplethysmography', 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society. doi: 10.1109/embc.2019.8857036.
Nomoni, Michelle, et al. "A Pulsatile Optical Tissue Phantom for the Investigation of Light-Tissue Interaction in Reflectance Photoplethysmography." 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2019. https://doi.org/10.1109/embc.2019.8857036.
M. Nomoni, J. M. May, and P. A. Kyriacou, "A Pulsatile Optical Tissue Phantom for the Investigation of Light-Tissue Interaction in Reflectance Photoplethysmography," 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2019, doi: 10.1109/embc.2019.8857036.
@inproceedings{nomoni2019pulsatile,
  title         = {{A Pulsatile Optical Tissue Phantom for the Investigation of Light-Tissue Interaction in Reflectance Photoplethysmography}},
  author        = {Nomoni, Michelle and May, James M. and Kyriacou, Panayiotis A.},
  year          = {2019},
  booktitle     = {2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society},
  doi           = {10.1109/embc.2019.8857036}
}

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