TY - JOUR
T1 - Parametric handheld optical probe (HOPE) for biological tissue characterization in the near-infrared spectral range
AU - Davidov, Daniel
AU - Shemesh, David
AU - Einstein, Ofira
AU - Abookasis, David
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/9/15
Y1 - 2021/9/15
N2 - Various optical monitoring techniques across the visible and near-infrared spectral regions have been developed to assess tissue characteristics for a wide range of biomedical and health science applications. In this work, we designed a multimodal non-invasive optical probe that can provide information regarding live tissue metrics. The probe, 12 mm in diameter, consists of three separate small probes with different diameters. Each of the probes is sensitive to a different intrinsic tissue feature for diagnostic purposes. These features include diffuse light reflectance, scattering coefficient, refractive index, blood flow, and temperature. The probe apparatus is based on wideband light source and spectrometer, a laser Doppler flowmetry instrument, and a temperature-sensing device. The advantage of combining three different approaches in a single probe create a sensor able to characterize broad tissue metrics with high temporal resolution to better understand disease mechanisms. The performance of this hybrid handheld optical probe (HOPE) was tested in two models of tissue injury: (1) arterial occlusion of a human hand (n=3); and (2) brain hypoxia in mice (n=2). Following data analysis, differences in tissue parameters were observed compared to baseline measures. Experimental results illustrate the ability of the HOPE setup to monitor variations in different tissue parameters. This probe may serve as a sensor device for characterization of tissue features in a medical environment during clinical diagnosis and therapeutic procedures.
AB - Various optical monitoring techniques across the visible and near-infrared spectral regions have been developed to assess tissue characteristics for a wide range of biomedical and health science applications. In this work, we designed a multimodal non-invasive optical probe that can provide information regarding live tissue metrics. The probe, 12 mm in diameter, consists of three separate small probes with different diameters. Each of the probes is sensitive to a different intrinsic tissue feature for diagnostic purposes. These features include diffuse light reflectance, scattering coefficient, refractive index, blood flow, and temperature. The probe apparatus is based on wideband light source and spectrometer, a laser Doppler flowmetry instrument, and a temperature-sensing device. The advantage of combining three different approaches in a single probe create a sensor able to characterize broad tissue metrics with high temporal resolution to better understand disease mechanisms. The performance of this hybrid handheld optical probe (HOPE) was tested in two models of tissue injury: (1) arterial occlusion of a human hand (n=3); and (2) brain hypoxia in mice (n=2). Following data analysis, differences in tissue parameters were observed compared to baseline measures. Experimental results illustrate the ability of the HOPE setup to monitor variations in different tissue parameters. This probe may serve as a sensor device for characterization of tissue features in a medical environment during clinical diagnosis and therapeutic procedures.
KW - Blood flow
KW - Light reflectance spectroscopy
KW - Multi-parameters information
KW - Optical probe
KW - Tissue metrics
UR - http://www.scopus.com/inward/record.url?scp=85110534542&partnerID=8YFLogxK
U2 - 10.1016/j.optcom.2021.127076
DO - 10.1016/j.optcom.2021.127076
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AN - SCOPUS:85110534542
SN - 0030-4018
VL - 495
JO - Optics Communications
JF - Optics Communications
M1 - 127076
ER -