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Broadband absorption spectroscopy of turbid media using a dual step steady-state method.

Content Provider	Semantic Scholar
Author	Foschum, Florian Kienle, Alwin
Copyright Year	2012
Abstract	We present a method for the determination of the absorption coefficient of turbid media in a broad wavelength range with high spectral resolution using a dual step method. First, the reduced scattering coefficient is determined for a few wavelengths with spatially resolved reflectance measurements. The reduced scattering coefficient for the intermediate wavelengths is interpolated by fitting a power law. Second, the absorption coefficient is obtained from measurements of the total reflectance using the a priori knowledge of the reduced scattering coefficient. By applying a white light source and a spectrometer to measure the total reflectance, the absorption coefficient is determined with a high spectral resolution. The methodology is verified by comparing the absorption coefficients determined by the spatially resolved reflectance measurements with those obtained by the dual step method. The influence of an unknown refractive index and phase function on the determination of the optical properties is investigated. In addition, the optical properties of Intralipid/ink phantoms and the fat layer of porcine rind were determined. The absorption coefficient of the investigated phantoms varying by four orders of magnitude could be determined with an average error of less than 10%.
Starting Page	037009
Ending Page	037009
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1117/1.JBO.17.3.037009
PubMed reference number	22502581
Journal	Medline
Volume Number	17
Issue Number	3
Alternate Webpage(s)	http://www.ilm-ulm.de/fileadmin/files/literatur/Foschum_KombinierteMethode.pdf
Alternate Webpage(s)	https://www.spiedigitallibrary.org/journalArticle/Download?fullDOI=10.1117/1.JBO.17.3.037009
Alternate Webpage(s)	https://doi.org/10.1117/1.JBO.17.3.037009
Journal	Journal of biomedical optics
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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