Diffuse optical tomography in time domain with the inverse Rytov series

TL;DR

This paper introduces a nonlinear inverse Rytov series approach for time-domain diffuse optical tomography, improving image reconstruction by addressing the limitations of the linear Rytov approximation.

Contribution

The paper develops the inverse Rytov series for the time-dependent diffusion equation, enabling nonlinear reconstruction in optical tomography.

Findings

Verified method with a solid-phantom experiment

Demonstrated nonlinear Rytov approximation effectiveness

Improved image reconstruction accuracy

Abstract

The Rytov approximation has been commonly used to obtain reconstructed images for optical tomography. However, the method requires linearization of the nonlinear inverse problem. Here, we demonstrate nonlinear Rytov approximations by developing the inverse Rytov series for the time-dependent diffusion equation. The method is verified by a solid-phantom experiment.