Impact of skin tone on photoacoustic oximetry and tools to minimize bias

Y Mantri, JV Jokerst - Biomedical Optics Express, 2022 - opg.optica.org
The major optical absorbers in tissue are melanin and oxy/deoxy-hemoglobin, but the
impact of skin tone and pigmentation on biomedical optics is still not completely understood …

Learned spectral decoloring enables photoacoustic oximetry

J Gröhl, T Kirchner, TJ Adler, L Hacker, N Holzwarth… - Scientific reports, 2021 - nature.com
The ability of photoacoustic imaging to measure functional tissue properties, such as blood
oxygenation sO 2, enables a wide variety of possible applications. sO 2 can be computed …

Estimating blood oxygenation from photoacoustic images: can a simple linear spectroscopic inversion ever work?

R Hochuli, L An, PC Beard… - Journal of biomedical …, 2019 - spiedigitallibrary.org
Linear spectroscopic inversions, in which photoacoustic amplitudes are assumed to be
directly proportional to absorption coefficients, are widely used in photoacoustic imaging to …

A review of the effect of skin pigmentation on pulse oximeter accuracy

R Al-Halawani, PH Charlton, M Qassem… - Physiological …, 2023 - iopscience.iop.org
Pulse oximetry is a non-invasive optical technique used to measure arterial oxygen
saturation (SpO2) in a variety of clinical settings and scenarios. Despite being one the most …

Single-wavelength blood oxygen saturation sensing with combined optical absorption and scattering

F Gao, Q Peng, X Feng, B Gao… - IEEE Sensors Journal, 2015 - ieeexplore.ieee.org
Blood oxygen saturation (SO2) reflects the oxygenation level in blood transport and tissue.
Previous studies have shown the capability of non-invasive quantitative measurements of …

Effects of wavelength-dependent fluence attenuation on the noninvasive photoacoustic imaging of hemoglobin oxygen saturation in subcutaneous vasculature in vivo

K Maslov, HF Zhang, LV Wang - Inverse Problems, 2007 - iopscience.iop.org
Quantitative measurements of the oxygen saturation of hemoglobin (sO 2) in a blood vessel
in vivo presents a challenge in photoacoustic imaging. As a result of wavelength-dependent …

Photoacoustic oximetry imaging performance evaluation using dynamic blood flow phantoms with tunable oxygen saturation

WC Vogt, X Zhou, R Andriani, KA Wear… - Biomedical optics …, 2019 - opg.optica.org
Multispectral photoacoustic oximetry imaging (MPOI) is an emerging hybrid modality that
enables the spatial mapping of blood oxygen saturation (SO_2) to depths of several …

[HTML][HTML] Photoacoustic tomography of blood oxygenation: a mini review

M Li, Y Tang, J Yao - Photoacoustics, 2018 - Elsevier
Photoacoustic tomography (PAT) is a hybrid imaging modality that combines rich contrast of
optical excitation and deep penetration of ultrasound detection. With its unique optical …

Quantitative blood oxygen saturation imaging using combined photoacoustics and acousto-optics

A Hussain, W Petersen, J Staley, E Hondebrink… - Optics letters, 2016 - opg.optica.org
In photoacoustic spectroscopy (PAS), wavelength dependent optical attenuation of
biological tissue presents a challenge to measure the absolute oxygen saturation of …

Pulse oximetry based on photoplethysmography imaging with red and green light: Calibratability and challenges

A Moço, W Verkruysse - Journal of clinical monitoring and computing, 2021 - Springer
Remotely measuring the arterial blood oxygen saturation (SpO 2) in visible light (Vis)
involves different probing depths, which may compromise calibratibility. This paper assesses …