Hello, I am working with nibabel and I have noticed that the affine matrix that I obtain with nibabel is different from the one shown by 3d slicer in the “Volumes” module.
In this example I obtain this matrix with nibabel:
[[ 0.4670569 -0.04001786 -0.00583032]
[0.03880422 0.46219775 -0.07265816]
[0.01120476 0.06741843 0.49465886]]
and with 3d slicer:
0.996282 -0.0853623 -0.0116606
0.0827735 0.985917 -0.145316
0.0239009 0.143811 0.989317
Why does this happen?