I have applied acpc alignment of a set of MRI images in MATLAB (https://github.com/vistalab/vistasoft/wiki/ACPC-alignment) and in brainlife(https://brainlife.io/app/5b96d5ed059cf9002719250b with MNI152_1mm The 1mm MNI_152 as the template)
the affine and shape of output of acpc alignment in MATLAB are:
[[1,0,0,-90],
[0,1,0,-126],
[0,0,1,-72],
[0,0,0,1]] 181x217x181
the affine and shape of output of acpc alignment in brainlife are:
[[-1,0,0,90],
[0,1,0,-126],
[0,0,1,-72],
[0,0,0,1]] 182x218x182
Could anyone help me figure out why these two are not the same please? thank you in advance