HyperTRCSS: A Hyperspectral Time-resolved Compressive Sensing Spectrometer for Depth-sensitive Monitoring of Cytochrome-c-oxidase and Blood Oxygenation

Overview

Journal J Biomed Opt

Specialties Biomedical Engineering
Ophthalmology

Date 2024 Jan 25

PMID 38269084

Authors

Natalie C Li

Seva Ioussoufovitch

Mamadou Diop

Affiliations

Soon will be listed here.

Abstract

Significance: Hyperspectral time-resolved (TR) near-infrared spectroscopy offers the potential to monitor cytochrome-c-oxidase (oxCCO) and blood oxygenation in the adult brain with minimal scalp/skull contamination. We introduce a hyperspectral TR spectrometer that uses compressive sensing to minimize acquisition time without compromising spectral range or resolution and demonstrate oxCCO and blood oxygenation monitoring in deep tissue.

Aim: Develop a hyperspectral TR compressive sensing spectrometer and use it to monitor oxCCO and blood oxygenation in deep tissue.

Approach: Homogeneous tissue-mimicking phantom experiments were conducted to confirm the spectrometer's sensitivity to oxCCO and blood oxygenation. Two-layer phantoms were used to evaluate the spectrometer's sensitivity to oxCCO and blood oxygenation in the bottom layer through a 10 mm thick static top layer.

Results: The spectrometer was sensitive to oxCCO and blood oxygenation changes in the bottom layer of the two-layer phantoms, as confirmed by concomitant measurements acquired directly from the bottom layer. Measures of oxCCO and blood oxygenation by the spectrometer were highly correlated with "gold standard" measures in the homogeneous and two-layer phantom experiments.

Conclusions: The results show that the hyperspectral TR compressive sensing spectrometer is sensitive to changes in oxCCO and blood oxygenation in deep tissue through a thick static top layer.

Citing Articles

HyperTRCSS: A hyperspectral time-resolved compressive sensing spectrometer for depth-sensitive monitoring of cytochrome-c-oxidase and blood oxygenation.

Li N, Ioussoufovitch S, Diop M J Biomed Opt. 2024; 29(1):015002.

PMID: 38269084 PMC: 10807872. DOI: 10.1117/1.JBO.29.1.015002.

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