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Proceedings Paper

Influence of earlobe thickness on near infrared spectroscopy
Author(s): Jingying Jiang; Tianpei Wang; Si Li; Lin Li; Jiajia Liu; Kexin Xu
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Paper Abstract

Near-infrared spectroscopy has been recognized as a potential technology for noninvasive blood glucose sensing. However, the detected spectral signal is unstable mainly because of (1) the weak light absorption of glucose itself within NIR range, (2) the influence of temperature and individual differences of biotissue. Our previous results demonstrated that the synergistic effect of both transmittance and reflectance could enhance the strength of the detection signal. In this talk, we design a set of experiments to analyze the effect of earlobe thickness on Near Infrared spectroscopic measurement by using home-made optical fiber probe within the wavelength of 1000-1600nm. Firstly, we made a MC simulation of single-layer skin model and five-layer skin model to get the diffused transmittance spectra and diffused reflectance spectra under different optaical path lengths. And then we obtain the spectra of the earlobes from different volunteers by the same way. The experimental results showed that with the increase of the thickness,the light intensity of diffused transmittance decreases, and the light intensity of diffused reflectance remaines substantially unchanged.

Paper Details

Date Published: 3 March 2017
PDF: 8 pages
Proc. SPIE 10063, Dynamics and Fluctuations in Biomedical Photonics XIV, 100631D (3 March 2017); doi: 10.1117/12.2251327
Show Author Affiliations
Jingying Jiang, Tianjin Univ. (China)
Tianpei Wang, Tianjin Univ. (China)
Si Li, Tianjin Univ. (China)
Lin Li, Tianjin Univ. (China)
Jiajia Liu, Tianjin Univ. (China)
Kexin Xu, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 10063:
Dynamics and Fluctuations in Biomedical Photonics XIV
Valery V. Tuchin; Kirill V. Larin; Martin J. Leahy; Ruikang K. Wang, Editor(s)

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