H. Ullaha, *, G. Gilanieb, M. Attiqueb, M. Y. Hamzaa, and M. Ikrama
a Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences,
Islamabad 45650, Pakistan
b Department of Computer Science and Information Technology, The Islamia University of Bahawalpur, Pakistan
*e-mail: hafeezullah79@gmail.com
Received December 6, 2011; in final form, December 10, 2011; published online April 3, 2012
Abstract—We report the use of M-mode swept source optical coherence tomography (SS-OCT) for measuring
sodium chloride (NaCl) salt concentrations in liquid phantoms and in drawn whole blood based on temporal
dynamics of light scattering. The Brownian motion of scattering particle is affected due to the change in vis-
cosity of liquid. An autocorrelation function was determined from the power spectrum of SS-OCT signal and
then was fit by mono and double exponential function to obtain decorrelation time. These translational decor-
relation times corresponding to translational diffusion coefficients enabled us to find the controlled viscosity of
the medium. The viscosities of the media were compared with literature values and a fair/excellent agreement
was observed. Thus, the technique has ability to quantify the salt levels in terms of viscosity in non-flowing
medium suspensions and many research routes necessary to determine its potential for in-vivo applications.
DOI: 10.1134/S1054660X12050258
Pleiades Publishing home page | journal home page | top
If you have any problems with this server, contact webmaster.