I need your help
I used Elastix module to register MR and CT of radiotherapy head and neck patient. MR is fixed volume and CT is moving volume. MR scan does not contain shoulders and upper part of the head , unlike CT scan. Output volume is cropped at the border of MR scan after Elastix deformable registration. But I need missing parts of body in Output volume due to dose calculation. How to solve it?
PS: I attach original CT, MR and Output Volume is screen capture.