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27 October 2015 Double-integrating-sphere system at the National Institute of Standards and Technology in support of measurement standards for the determination of optical properties of tissue-mimicking phantoms
Paul Lemaillet, Jean-Pierre Bouchard, Jeeseong Hwang, David W. Allen
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Journal of Biomedical Optics, Vol. 20, Issue 12, 121310 (October 2015). https://doi.org/10.1117/1.JBO.20.12.121310
Abstract
There is a need for a common reference point that will allow for the comparison of the optical properties of tissue-mimicking phantoms. After a brief review of the methods that have been used to measure the phantoms for a contextual backdrop to our approach, this paper reports on the establishment of a standardized double-integrating-sphere platform to measure absorption and reduced scattering coefficients of tissue-mimicking biomedical phantoms. The platform implements a user-friendly graphical user interface in which variations of experimental configurations and model-based analysis are implemented to compute the coefficients based on a modified inverse adding-doubling algorithm allowing a complete uncertainty evaluation. Repeatability and validation of the measurement results of solid phantoms are demonstrated for three samples of different thicknesses, d=5.08  mm, 7.09 mm, and 9.92 mm, with an absolute error estimate of 4.0% to 5.0% for the absorption coefficient and 11% to 12% for the reduced scattering coefficient (k=2). The results are in accordance with those provided by the manufacturer. Measurements with different polarization angles of the incident light are also presented, and the resulting optical properties were determined to be equivalent within the estimated uncertainties.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE) 1083-3668/2015/$25.00 © 2015 SPIE
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Paul Lemaillet, Jean-Pierre Bouchard, Jeeseong Hwang, and David W. Allen "Double-integrating-sphere system at the National Institute of Standards and Technology in support of measurement standards for the determination of optical properties of tissue-mimicking phantoms," Journal of Biomedical Optics 20(12), 121310 (27 October 2015). https://doi.org/10.1117/1.JBO.20.12.121310
Published: 27 October 2015
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Cited by 26 scholarly publications.
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KEYWORDS
Optical properties
Reflectivity
Indium oxide
Optical spheres
Scattering
Transmittance
Absorption
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