The results of 2-D numerical simulation on restoration of local inhomogeneities by the diffraction<br>tomography method is considered. The direct problem is solved by the finite difference method. The<br>restoration of parameters is implemented with the use of the first-order Born approximation. With the use of<br>seismic wavefield (SV-problem) the elastic parameters of local inhomogeneities and seismic velocities for<br>inhomogeneities of simple and complex geometry are restored in a presence of viscosity as well. The main<br>attention is devoted to estimation of restoration accuracy and a significance of a priori information. The<br>results of restoration of electrical conductivity with the use of electromagnetic diffusive wavefield is<br>considered as well.


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