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Next step of non-invasive glucose monitor by NIR technique from the well controlled measuring condition and results

机译:通过良好控制的测量条件和结果,通过NIR技术进行无创葡萄糖监测的下一步

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摘要

Although non-invasive glucose measurement techniques based on near-infrared (NIR) spectros-copy have been interested for over 20 years, a reliable non-invasive glucose monitoring method has not been established yet. Many hurdles are remained to be solved to extract extremely small glucose information from the complicated NIR spectra. In addition, there are also some ambiguous time-dependent physiological processes, which make the explanation of the model more difficult especially in the universal calibration. In this paper, the optical consideration in instrument to improve the SNR is discussed first, which is a critical way to detect small analyte signal. Then an optical measuring conditions reproducible system is used to reduce the noise from human-spectrometer interface. And an optical probe is designed according to the Monte Carlo simulations to measure the dermis selectively to eliminate the noise from human tissue. Finally, with the well-controlled measuring conditions, the in vivo result of single person using the leave one out cross validation within the single day is quite satisfactory. However, the validation results using the validation set from different day are not so good. Further research and extensive model validations are needed to determine if the model is truly based on the glucose information.
机译:尽管基于近红外(NIR)光谱的非侵入性葡萄糖测量技术已引起人们20多年的兴趣,但尚未建立可靠的非侵入性葡萄糖监测方法。从复杂的NIR光谱中提取极少的葡萄糖信息仍有许多障碍需要解决。此外,还有一些时间依赖性的生理过程,这使得模型的解释更加困难,尤其是在通用校准中。本文首先讨论了提高仪器信噪比的光学考虑,这是检测小分析物信号的关键方法。然后,使用光学测量条件可重现系统来减少来自人光谱仪接口的噪声。根据蒙特卡洛模拟设计了一种光学探针,以选择性地测量真皮以消除人体组织的噪音。最后,在良好控制的测量条件下,单人在一天之内使用留一法交叉验证的体内结果是相当令人满意的。但是,使用不同日期的验证集的验证结果不是很好。需要进一步的研究和广泛的模型验证来确定模型是否真正基于葡萄糖信息。

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