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. <b>23</b>, 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
(100.3190) Image processing : Inverse problems
(110.7050) Imaging systems : Turbid media
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(170.5280) Medical optics and biotechnology : Photon migration
(290.7050) Scattering : Turbid media
S. J. Matcher, "Nonuniqueness in optical tomography: relevance of the P1 approximation," Opt. Lett. 24, 1729-1731 (1999)