Frontiers of Optoelectronics >
Portable muscle oxygenation monitor based on near infrared spectroscopy
Received date: 18 Feb 2009
Accepted date: 27 Mar 2009
Published date: 05 Sep 2009
In order to measure the relative change of muscle oxygenation non-invasively, dynamically and directly, a portable monitor based on near infrared spectroscopy (NIRS) was developed. The monitor consists of several function modules, including 735 nm, 805 nm and 850 nm integrated three-wavelength light emitting diode (LED) light source, LED driver, integrated detector, amplifier and filter, A/D sampling circuit, single chip microcomputer and laptop. The distance between light source and detector is 3 cm and the photon migration depth in tissue is approximately 1.5 cm. The monitor is portable with low dark noise and good long-term stability. The relative change of muscle oxygenation measured by the monitor was in accordance with the real physiology status in the cuff ischemia experiment, verifying the performance of the monitor for living muscle. Two inflexions referring to an accelerated fall and a leveling-off phase in the muscle oxygenation index, respectively, were observed in
Zhongxing ZHANG, Bangde WANG, Qing NIE, Qingming LUO, Hui GONG . Portable muscle oxygenation monitor based on near infrared spectroscopy[J]. Frontiers of Optoelectronics, 2009 , 2(3) : 248 -252 . DOI: 10.1007/s12200-009-0050-8
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