  In a recent study [1] we have extended the opacity expansion approach to
describe jet-medium interactions including medium motion effects in the context
of heavy-ion collisions. We have computed color field of the in-medium sources,
including the effects of the transverse field components and the energy
transfer between the medium and jet. The corresponding contributions are
sub-eikonal in nature, and were previously ignored in the literature. Here we
discuss how our approach can be applied to describe the medium motion effects
in the context of Deep Inelastic Scattering.
