The Analysis for Improving the SNR of Blood Components Noninvasive Measurement with DS Method
LI Gang1, WANG Hui-quan1, ZHAO Zhe1, LIN Ling1, ZHANG Bao-ju2, WU Xiao-rong2*
1. State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin 300072, China 2. College of Physics & Electronic Information, Tianjin Normal University, Tianjin 300387, China
Abstract：In order to increase the accuracy of blood components measurement and enhance the stability of prediction model, the quantitative signal-noise-ratio (SNR) analysis of measuring instruments based on dynamic spectrum (DS) and preprocessing method was conducted. The SNR of DS is increased after adding boxcar integrator, decreasing wavelength revolution, balancing the DS’s SNR and excluding gross errors in preprocessing according to experiment results. Two volunteers were tested continuously for many times using the DS data acquiring system. The correlation coefficients of the each volunteer’s DS data was increased from 0.934 and 0.953 to 0.991 and 0.987, respectively. Moreover, the gap between the correlation coefficient of the same volunteer’s DS and different volunteers’ DS is increased too, which shows that the SNR can be improved by these methods. The quantitative SNR analysis can guide the way of choosing preprocessing method efficiently, which will create the condition for clinical application of the blood components noninvasive measurement.
李 刚1，王慧泉1，赵 喆1，林 凌1，张宝菊2，吴晓荣2* . 提高DS法无创血液成分检测信噪比的方法与分析[J]. 光谱学与光谱分析, 2012, 32(08): 2290-2294.
LI Gang1, WANG Hui-quan1, ZHAO Zhe1, LIN Ling1, ZHANG Bao-ju2, WU Xiao-rong2* . The Analysis for Improving the SNR of Blood Components Noninvasive Measurement with DS Method . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(08): 2290-2294.
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