When matrix axes are angled slices position is not correct

[liamtimms]

When the image matrix is angled (i.e., far from just axial, coronal or sagittal), the origin and offset for each slice are not calculated correctly.

[liamtimms]

https://simpleitk.readthedocs.io/en/master/fundamentalConcepts.html

[liamtimms]

https://stackoverflow.com/questions/71441883/how-to-get-transformation-affine-from-itk-registration