A combined frequency domain diffuse optical spectroscopy and diffuse correlation spectroscopy system towards inspiratory muscle metabolism monitoring of mechanically ventilated patients

Carlos A. Gómez; David Boas; W. Darlene Reid; Darren Roblyer

doi:10.1117/12.2650686

17 March 2023 A combined frequency domain diffuse optical spectroscopy and diffuse correlation spectroscopy system towards inspiratory muscle metabolism monitoring of mechanically ventilated patients

Carlos A. Gómez, David Boas, W. Darlene Reid, Darren Roblyer

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Proceedings Volume PC12363, Multiscale Imaging and Spectroscopy IV; PC123630J (2023) https://doi.org/10.1117/12.2650686
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

Frequency Domain Diffuse Optical Spectroscopy (FD-DOS) can measure tissue optical properties and Diffuse Correlation Spectroscopy (DCS) can measure tissue blood flow. We have combined a custom FD-DOS and a custom DCS system to simultaneously measure oxy and deoxy hemoglobin, blood flow, and muscle metabolism of the sternocleidomastoid during inspiratory threshold loading in healthy volunteers. Additionally, we have developed Monte Carlo based multilayer look up tables for both FD-DOS and DCS that take into account both the skin tone and adipose tissue thickness. In the future, this system may assist in monitoring patients under mechanical ventilation, especially during weaning.

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Carlos A. Gómez, David Boas, W. Darlene Reid, and Darren Roblyer "A combined frequency domain diffuse optical spectroscopy and diffuse correlation spectroscopy system towards inspiratory muscle metabolism monitoring of mechanically ventilated patients", Proc. SPIE PC12363, Multiscale Imaging and Spectroscopy IV, PC123630J (17 March 2023); https://doi.org/10.1117/12.2650686

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KEYWORDS

Diffuse optical spectroscopy

Mode conditioning cables

Spectroscopy

Particle filters

Tissues

Blood circulation

Scattering

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