We extend the 2-D ADCIG theory to include forward-scattered wavefields comprised of P-P diffracted and P-S scattering. We develop a series of six equations for the six unknown parameters, which allows us to estimate either the source- or receiver-side, angle-dependent reflectivity directly from ODCIGs volumes. Numerical tests illustrate forward-scattered wavefields are useful for imaging. This observation motivates further testing of the developed algorithms on field data scenarios, including cross-hole seismic, VSP, and long-offset reflection data. Results of numerical experiments indicate that information on wavefield focusing is present in forward-scattered ADCIGs, which suggests that this algorithm may be useful tool for improving wave-equation based tomography of transmission wavefields.