Computing DRR to a Transformed Volume

Hi everyone,
is it possible to compute DRR to a transformed volume using Radiotherapy module?
I have applied a “harden transform” (only a rotation) to a CT volume but when I compute DRR I don’t get the expected projection image.
I have also tried to rotate the beam with the same angle using the original CT volume (not transformed) but I get a different result.

This is a known limitation. See this topic for some more details: