A model for waveform dissimilarities in dual-depth reflectance-PPG

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Samenvatting

The pressure wave is attenuated as it travels through the vascular bed of tissue. Consequently, reflectance photoplethysmography (PPG) waveforms probed using dual-penetrating wavelengths, such as green (G) and red R; the deepest) are dissimilar. To unravel the dual-depth aspect of PPG, we modeled the wavelength-dependency of the shape of reflection-PPG signals in G (520-580 nm) and R (625-720nm). Skin compression perturbs the relative contributions of the dermal and subdermal blood volume variations sources (BVVs) to PPG and was used to verify our model. We acquired reflectance-PPG in G and R on the finger of nine subjects (ages, 26-32 yrs). Two parameters were used for describing dual-depth dissimilarities: the phase shift, φ, between the first harmonics of the subdermal and dermal BVVs, and the observed phase shift (PS) between PPG signals in G and R. The average φ was 37.6, CI 95% [22.0, 53.2] degrees. At uncompressed skin, this corresponds to an average PS of 12.5, [7.8, 17.2] degrees. Our results suggest that phase parameters may enable microvascular characterization and diagnosis.

Originele taal-2Engels
Titel40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018
Plaats van productiePiscataway
UitgeverijInstitute of Electrical and Electronics Engineers
Pagina's5125-5130
Aantal pagina's6
ISBN van elektronische versie978-1-5386-3646-6
ISBN van geprinte versie978-1-5386-3647-3
DOI's
StatusGepubliceerd - 26 okt 2018
Evenement40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society= (EMBC 2018) - Hawaii Convention Center, Honolulu, Verenigde Staten van Amerika
Duur: 18 jul 201821 jul 2018
Congresnummer: 40
https://embc.embs.org/2018/

Congres

Congres40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society= (EMBC 2018)
Verkorte titelEMBC 2018
LandVerenigde Staten van Amerika
StadHonolulu
Periode18/07/1821/07/18
Internet adres

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Citeer dit

Moco, A., Stuijk, S., de Haan, G., Wang, R. K., & Verkruysse, W. (2018). A model for waveform dissimilarities in dual-depth reflectance-PPG. In 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018 (blz. 5125-5130). [8513484] Piscataway: Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/EMBC.2018.8513484