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	Determining absorption coefficients in a photoacoustic system
	LI, YOUZHI; CHEN, BO
	2014-02-20
著作权人	COVIDIEN LP
专利号	WO2014028683A1
国家	世界知识产权组织
文献子类	发明申请
其他题名	Determining absorption coefficients in a photoacoustic system
英文摘要	A physiological monitoring system may use photoacoustic sensing to determine physiological information of a subject. The photoacoustic monitoring system may use a light source, such as a modulated continuous wave laser diode, to provide a frequency modulated photonic signal (e.g., a chirp signal) to the subject. An acoustic detector may be used to detect an acoustic pressure signal from the subject. The acoustic pressure signal may include two components corresponding to two wavelengths of light in the photonic signal. A signal ratio may be calculated based on the two components. The photoacoustic monitoring system may use the signal ratio to calculate one or more absorption coefficients. The photoacoustic monitoring system may use the one or more absorption coefficients to determine additional physiological information such as hemoglobin concentration, blood oxygen saturation, and temperature.
公开日期	2014-02-20
申请日期	2013-08-15
状态	未确认
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/58876]
专题	半导体激光器专利数据库
作者单位	COVIDIEN LP
推荐引用方式 GB/T 7714	LI, YOUZHI,CHEN, BO. Determining absorption coefficients in a photoacoustic system. WO2014028683A1. 2014-02-20.

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