Hi. I am trying to match 2 files and I would like some help. I found they had different delt and ornt so I resample them and still not matching, any suggestions?

3dinfo -header_line -prefix -same_all_grid ASL_CBF_2MNI_6mm_172_120916.nii GCmask_MNI152_2009_noCerebellum.nii
prefix =dim? =delt? =ornt? =cent? =obl?
ASL_CBF_2MNI_6mm_172_120916.nii 1 0 0 1 1
GCmask_MNI152_2009_noCerebellum.nii 1 0 0 1 1

can I just resample it?

The "-master " option for 3dresample should get data onto the same grid.