Influence of earlobe thickness on near infrared spectroscopy

Jingying Jiang; Tianpei Wang; Si Li; Lin Li; Jiajia Liu; Kexin Xu

doi:10.1117/12.2251327

3 March 2017 Influence of earlobe thickness on near infrared spectroscopy

Jingying Jiang, Tianpei Wang, Si Li, Lin Li, Jiajia Liu, Kexin Xu

Proceedings Volume 10063, Dynamics and Fluctuations in Biomedical Photonics XIV; 100631D (2017) https://doi.org/10.1117/12.2251327
Event: SPIE BiOS, 2017, San Francisco, California, United States

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.

Citation Download Citation

Jingying Jiang, Tianpei Wang, Si Li, Lin Li, Jiajia Liu, and Kexin Xu "Influence of earlobe thickness on near infrared spectroscopy", Proc. SPIE 10063, Dynamics and Fluctuations in Biomedical Photonics XIV, 100631D (3 March 2017); https://doi.org/10.1117/12.2251327

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available