Scattering characteristics of photon density waves from an object embedded in a spherically two-layer turbid medium

Yuqi Yao; Yao Wang; Randall Locke Barbour; Harry L. Graber; Jenghwa Chang

doi:10.1117/12.209979

30 May 1995 Scattering characteristics of photon density waves from an object embedded in a spherically two-layer turbid medium

Yuqi Yao, Yao Wang, Randall Locke Barbour, Harry L. Graber, Jenghwa Chang

Author Affiliations +

Proceedings Volume 2389, Optical Tomography, Photon Migration, and Spectroscopy of Tissue and Model Media: Theory, Human Studies, and Instrumentation; (1995) https://doi.org/10.1117/12.209979
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

We present an analytic solution to the amplitude and phase distributions of photon density waves in strongly scattering, spherically symmetric, two-layer media containing a spherical object. The normal mode series method is employed to solve the inhomogeneous Helmholtz equation in spherical coordinates, with suitable boundary conditions. By comparing the total field on the surface of the outer layer when the object is present to when it is absent, we evaluate the potential sensitivity of an optical imaging system to inhomogeneities in absorption and scattering. For four types of background media which are different in their absorption and scattering properties, we determine: i) the modulation frequency that achieves an optimal compromise between signal detection reliability and sensitivity to the presence of object; ii) the minimum detectable object radius, iii) the smallest detectable change in its absorption coefficient and iv) scattering coefficient for a fixed object size. A discussion of the qualitative and quantitative findings is given.

Citation Download Citation

Yuqi Yao, Yao Wang, Randall Locke Barbour, Harry L. Graber, and Jenghwa Chang "Scattering characteristics of photon density waves from an object embedded in a spherically two-layer turbid medium", Proc. SPIE 2389, Optical Tomography, Photon Migration, and Spectroscopy of Tissue and Model Media: Theory, Human Studies, and Instrumentation, (30 May 1995); https://doi.org/10.1117/12.209979

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available