The question of whether a unique distribution of the absorption coefficient,
the scattering coefficient, and the refractive index of a turbid medium can
be reconstructed by optical tomography is considered. A recent publication
[Opt. Lett. 23, 882 (1998)]
established that such reconstruction is not possible when photon transport
is well modeled by the diffusion equation. A simple proof is offered that,
when measurements at high modulation frequencies are included, the more exact
P1 model of light transport suggests that this reconstruction may be possible.
© 1999 Optical Society of America
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