In Situ Monitoring of Mean Blood Oxygen Saturation using Extended Modified Lambert Beer Model > 자유게시판

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This paper investigated the minimal spectral resolution and optimum spectra range for optical monitoring of skin blood oxygen saturation (S t O 2). For this purpose, this study recruited fourteen Asian volunteers for demonstration work. The carried out measurements included reflectance data collected from the recruits throughout at rest and after a pressure of 140 mmHg was applied on their upper right arm. The prediction of the required value was through analysis of information of the thought of seen ranges of 500-660 nm, 520-645 nm, 520-600 nm, and 530-570 nm, with sampling resolutions of 1 nm, 2 nm, 5 nm, and 10 nm. The offline data evaluation using Extended Modified Lambert Beer model revealed that the S t O 2 worth predicted using spectral data within the vary 530-570 nm confirmed considerable similarity with that obtained from 520-645 nm range at spectral resolutions of up to 5 nm. The imply and commonplace deviation of the differences in the values obtained from these spectral ranges within the case of 5 nm sampling is given by 7 ± 8.6 % and 14 ± 3.2 % for at relaxation and blood occlusion experiment, BloodVitals tracker respectively. The upper variability in the value predicted for the latter experiment is likely due to insufficiency of the employed approach to extricate the distinctive features in hemoglobin spectra utilizing the corresponding resolution. The findings of this examine could also be helpful as a information to facilitate in the design of multispectral imaging system for optical monitoring of one's S t O 2 with excessive velocity.

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