VIS-NIR Diffuse Reflectance Spectroscopy System with Self-Calibrating Fiber-Optic Probe: Study of Perturbation Resistance

Perekatova, Valeriya; Kostyuk, Alexey; Kirillin, Mikhail; Сергеева, Е. А.; Kurakina, Daria; Shemagina, Olga; Orlova, Anna; Khilov, Aleksandr; Turchin, Ilya V.

doi:10.3390/diagnostics13030457

Cited by 7 publications

(3 citation statements)

References 49 publications

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“…At the onset of the arterial occlusion, a motion artifact that lasts approximately 1 to 2 s is noticeable at both wavelengths for all data types. This artifact is also visible in DS data types, even though they should be largely insensitive to changes in the optical coupling between sources and detectors 16 , 31 . A possible reason for this artifact to appear in DS data is that the optical coupling change may have occurred faster than the data sampling cycle through all sources and detectors.…”

Section: Resultsmentioning

confidence: 99%

“…This artifact is also visible in DS data types, even though they should be largely insensitive to changes in the optical coupling between sources and detectors. 16 , 31 A possible reason for this artifact to appear in DS data is that the optical coupling change may have occurred faster than the data sampling cycle through all sources and detectors. No motion artifact is visible at the onset of the venous occlusion [ Fig.…”

Section: Resultsmentioning

confidence: 99%

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Single-distance and dual-slope frequency-domain near-infrared spectroscopy to assess skeletal muscle hemodynamics

Fernandez,

Blaney,

Frias

et al. 2023

J. Biomed. Opt.

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.SignificanceNon-invasive optical measurements of deep tissue (e.g., muscle) need to take into account confounding contributions from baseline and dynamic optical properties of superficial tissue (adipose tissue).AimDiscriminate superficial and deep tissue hemodynamics using data collected with frequency-domain (FD) near-infrared spectroscopy (NIRS) in a dual-slope (DS) configuration.ApproachExperimental data were collected in vivo on the forearm of three human subjects during a 3-min arterial occlusion or 1-min venous occlusion. Theoretical data were generated using diffusion theory for two-layered media with varying values of the reduced scattering coefficient (μs′) (range: 0.5 to 1.1 mm − 1) and absorption coefficient (μa) (range: 0.005 − 0.015 mm − 1) of the two layers, and top layer thickness (range: 2 to 8 mm). Data were analyzed using diffusion theory for a homogeneous semi-infinite medium.ResultsExperimental data in vivo were consistent with simulated data for a two-layered medium with a larger μs′ in the top layer, comparable absorption changes in the top and bottom layers during venous occlusion, and smaller absorption changes in the top vs. bottom layers during arterial occlusion.ConclusionsThe dataset generated by DS FD-NIRS may allow for discrimination of superficial and deep absorption changes in two-layered media, thus lending itself to individual measurements of hemodynamics in adipose and muscle tissue.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Single-distance and dual-slope frequency-domain near-infrared spectroscopy to assess skeletal muscle hemodynamics

Fernandez,

Blaney,

Frias

et al. 2023

J. Biomed. Opt.

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“…Two studies were devoted to the use of diffuse reflectance spectroscopy (DRS). V. Perekatova et al reported on the comparative study of self-calibrating and single-slope DRS in terms of stability against various measurement disturbances [26]. The authors designed an experimental setup for DRS in a wide spectral range (from VIS to NIR), including a fiber-optic probe with two fibers for delivery and two used to receive light.…”

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confidence: 99%

Lesion Detection and Analysis Using Optical Imaging

Dremin

2023

Diagnostics

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Skin dehydration monitoring with optical spectroscopy allows assessment of water content in the organism: Thermal and physical loads, diuretic therapy

Davydov,

Budylin,

Baev

et al. 2024

Journal of Biophotonics

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This study investigates the relationship between body hydration levels and skin hydration using spatially resolved diffuse reflectance spectroscopy. The research involved monitoring skin dehydration and rehydration under various conditions, including thermal and physical loads on healthy volunteers, and diuretic therapy in patients with edema syndrome. Findings indicate a correlation between body mass reduction and skin hydration: a 1% loss in body mass corresponds to a 10% decrease in skin hydration. During thermal stress, water absorption at 970 nm decreased monotonically without recovery. Physical activity resulted in approximately 10% changes in skin water content within 20 min, followed by rehydration. Patients with edema syndrome exhibited the most substantial decrease in water absorption amplitude, at nearly 30%, during diuretic treatment. These results support optical spectroscopy as a non‐invasive tool for assessing body hydration, with implications for developing portable hydration monitoring devices for clinical and sports applications.

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VIS-NIR Diffuse Reflectance Spectroscopy System with Self-Calibrating Fiber-Optic Probe: Study of Perturbation Resistance

Cited by 7 publications

References 49 publications

Single-distance and dual-slope frequency-domain near-infrared spectroscopy to assess skeletal muscle hemodynamics

Single-distance and dual-slope frequency-domain near-infrared spectroscopy to assess skeletal muscle hemodynamics

Lesion Detection and Analysis Using Optical Imaging

Skin dehydration monitoring with optical spectroscopy allows assessment of water content in the organism: Thermal and physical loads, diuretic therapy

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