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Nonuniqueness in diffusion-based optical tomography

Arridge, SR; Lionheart, WRB; (1998) Nonuniqueness in diffusion-based optical tomography. OPT LETT , 23 (11) 882 - 884.

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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 de 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. (C) 1998 Optical Society of America.

Type:Article
Title:Nonuniqueness in diffusion-based optical tomography
Keywords:UNIQUENESS, BOUNDARY
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Computer Science

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