Research Papers: Sensing

Floating reference position-based correction method for near-infrared spectroscopy in long-term glucose concentration monitoring

[+] Author Affiliations
Guang Han, Tongshuai Han, Kexin Xu, Jin Liu

Tianjin University, School of Precision Instrument and Optoelectronics Engineering, Tianjin, China

J. Biomed. Opt. 22(7), 077001 (Jul 05, 2017). doi:10.1117/1.JBO.22.7.077001
History: Received December 21, 2016; Accepted June 14, 2017
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Abstract.  We present a floating reference position (FRP)-based drift correction method for near-infrared (NIR) spectroscopy-based long-term blood glucose concentration (BGC) monitoring. Previously, we reported that it is difficult to quantify the systematic drift caused by the fluctuation of incident light intensity at different source–detector (SD) separations based on the absolute FRP change. We use the relative FRP change as a baseline reference to quantitatively characterize the signal drift at different SD separations. For the wavelengths that were used, a uniform equation was developed to describe the relationship between the drift and the relative FRP change. With the help of this equation, the correction can easily be performed by subtracting the systematic drift estimated by the equation. A theoretical analysis and an experimental phantom study demonstrated that our method could be used for systematic drift correction in NIR spectroscopy for long-term BGC monitoring. Moreover, the analysis method can also be referenced to reduce drifts from multiple sources.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Guang Han ; Tongshuai Han ; Kexin Xu and Jin Liu
"Floating reference position-based correction method for near-infrared spectroscopy in long-term glucose concentration monitoring", J. Biomed. Opt. 22(7), 077001 (Jul 05, 2017). ; http://dx.doi.org/10.1117/1.JBO.22.7.077001


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