  We consider the scattering results of the radial
  solutions below the ground state to the focusing inhomogeneous nonlinear
Schr\"odinger equation
  $$i\partial_tu+\Delta u +|x|^{-b}|u|^{p}u=0$$
  in two dimension, where $0<b<1$ and $2-b<p<\infty$. We use a modified version
of Arora-Dodson-Murphy's approach [1] to give a new proof
  that extends the scattering results of [10] and avoids concentration
compactness.
