Load 3D Niftii images and save all slices for axial, coronal, saggital?

Question

I have some 3D Niftii datasets of brain MRI scans (FLAIR, T1, T2,..). The FLAIR scans for example are 144x512x512 with Voxel Size of 1.1, 0.5, 0.5 and I want to have 2D-slic