How to Register X-ray 2D - 3D Images

Right now it’s working like
Import → Meta Image → CT Volume Data → Cone-Beam Simulation ( Like DRRs generated from CT Volume).
CT Volume + Cone-Beam Simulation → CT → X-ray 2D-3D Registration.
I am confused where to see the 6D result (Pitch, Roll, Yaw, X-shift, Y-shift and z-shift)
I have one more doubt Here It’s register the CT Volume with it’s own Cone - Beam Simulation (2D x-ray projection)
Here I attached the screen short as:

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