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Proceedings Paper

A perturbation model for imaging in dense scattering media: derivation and evaluation of imaging operators
Author(s): H. L. Graber
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Paper Abstract

Most imaging schemes involve characterizing the interaction of an electromagnetic wave with a target medium. This interaction can be generally described by the wave equation: This equation relates the spatial variation (Laplacian) of the field to the electrical permittivity, e, and magnetic permeability, ix, of the medium. The latter quantities account for the induced alignment of the electrical dipole (polarization) and magnetic moment (magnetization) in the material by the propagating field, and they determine c, the speed of light, which is equal to 1/ Eµ . For a time-harmonic source, equation 1 reduces to the Helmholtz equation: where k, the wave number, is equal to wic, and w is the wave frequency in radians-s-1.

Paper Details

Date Published: 5 August 1993
PDF: 23 pages
Proc. SPIE 10311, Medical Optical Tomography: Functional Imaging and Monitoring, 1031108 (5 August 1993); doi: 10.1117/12.2283753
Show Author Affiliations
H. L. Graber, SUNY Health Science Ctr. (United States)

Published in SPIE Proceedings Vol. 10311:
Medical Optical Tomography: Functional Imaging and Monitoring
Gerhard J. Mueller, Editor(s)

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