Correction of an adding-doubling inversion algorithm for the measurement of the optical parameters of turbid media

Paul Lemaillet; Catherine C Cooksey; Jeeseong Hwang; Heidrun Wabnitz; Dirk Grosenick; Lin Yang; David W Allen

doi:10.1364/BOE.9.000055

Correction of an adding-doubling inversion algorithm for the measurement of the optical parameters of turbid media

Biomed Opt Express. 2017 Dec 4;9(1):55-71. doi: 10.1364/BOE.9.000055. eCollection 2018 Jan 1.

Authors

Paul Lemaillet¹, Catherine C Cooksey¹, Jeeseong Hwang², Heidrun Wabnitz³, Dirk Grosenick³, Lin Yang³, David W Allen¹

Affiliations

¹ National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
² National Institute of Standards and Technology, 325 Broadway Street, Boulder, CO 80305, USA.
³ Physikalisch-Technische Bundesanstalt (PTB), Abbestrasse 2-12, 10587 Berlin, Germany.

Abstract

We present broadband measurements of the optical properties of tissue-mimicking solid phantoms using a single integrating sphere to measure the hemispherical reflectance and transmittance under a direct illumination at the normal incident angle. These measurements are traceable to reflectance and transmittance scales. An inversion routine using the output of the adding-doubling algorithm restricted to the reflectance and transmittance under a direct illumination was developed to produce the optical parameters of the sample along with an uncertainty budget at each wavelength. The results for two types of phantoms are compared to measurements by time-resolved approaches. The results between our method and these independent measurements agree within the estimated measurement uncertainties.

Keywords: (120.3150) Integrating spheres; (170.7050) Turbid media; (290.5820) Scattering measurements; (300.0300) Spectroscopy; (300.1030) Absorption.