Abnormal image distortion after registration

[yuanpengpeng]

After registering the two 3D images with the following commands, I found that the images were distorted strangely. The moving images were ct images and the fixed images were cbct images

reg_f3d -ref niuwangping_middle.niilungRegion.nii.gz -flo niuwangping_moved.nii.gz -res niuwangping20240611.nii.gz