Nonuniqueness in diffusion-based optical tomography
- 1 June 1998
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 23 (11) , 882-884
- https://doi.org/10.1364/ol.23.000882
Abstract
A condition on nonuniqueness in optical tomography is stated. The main result applies to steady-state (dc) diffusion-based optical tomography, wherein we demonstrate that simultaneous unique recovery of diffusion and absorption coefficients cannot be achieved. A specific example of two images that give identical dc data is presented. If the refractive index is considered an unknown, then nonuniqueness also occurs in frequency-domain and time-domain optical tomography, if the underlying model of the diffusion approximation is employed.Keywords
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