  In this paper, we consider the inverse scattering problem for recovering
either an isotropic or anisotropic scatterer from the measured scattered field
initiated by a point source. We propose two new imaging functionals for solving
the inverse problem. The first one employs a far-field transform to the data
which we then use to derive and provide an explicit decay rate for the imaging
functional. In order to analyze the behavior of this imaging functional we use
the factorization of the near field operator as well as the Funk-Hecke integral
identity. For the second imaging functional the Cauchy data is used to define
the functional and its behavior is analyzed using the Green's identities.
Numerical experiments are given in two dimensions for both isotropic and
anisotropic scatterers.
