We present a carefully designed phantom experimental study aimed to provide solid evidence that both absorption and scattering images of heterogeneous scattering media can be reconstructed independently from dc data. We also study the important absorption-scattering cross-talk issue. In this regard, we develop a simple normalizing scheme that is incorporated into our nonlinear finite-element-based reconstruction algorithm. Our results from the controlled phantom experiments show that the cross talk of an absorption object appearing in scattering images can be eliminated and that the cross talk of a scattering object appearing in absorption images can be reduced considerably. In addition, these carefully designed phantom experiments clearly suggest that both absorption and scattering images can be simultaneously recovered and quantitatively separated in highly scattering media by use of dc measurements. Finally, we discuss our results in light of recent theoretical findings on nonuniqueness for dc image reconstruction.
© 2002 Optical Society of America
[Optical Society of America ]
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(170.3830) Medical optics and biotechnology : Mammography
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.6960) Medical optics and biotechnology : Tomography
Yong Xu, Xuejun Gu, Taufiquar Khan, and Huabei Jiang, "Absorption and Scattering Images of Heterogeneous Scattering Media Can Be Simultaneously Reconstructed by Use of dc Data," Appl. Opt. 41, 5427-5437 (2002)