Fast Visualization of Internal Structure of Multiple-Scattering Objects by Diffusion Optical Tomography

摘要

Fast (i.e. able to a real-time operation) approximate statistical nonlinear algorithm of the diffusion optical tomography inverse problems solution has been described. Results of this algorithm approbation by the example of reconstruction of a rather complicated (up to 3 strongly absorbing inclusions with the size ≥5 mm) internal structure of strongly scattering and weekly absorbing (with scattering and absorption constants about 1.4 and 0.005 ÷ 0.015 mm~(-1) correspondingly) large-size (up to 140 mm) model objects have been presented. CW radiation of low-power (with input power < 20 mW) diode lasers of near IR (wavelengths in the range 770 ÷ 820 nm) region has been used in experimental realizations.