hello, SPM users, I have one mat file which is m*n double arrays and could be load by matlab and shown, how can I use it with SPM without header file and its 4*4 affine matrix? I am very appreciate your kind help. Changsheng Wang =============================================== Changsheng Wang, M.D., Ph.D., Clinical& Magnetic Resonance Research Center, University of New Mexico, Albuquerque, NM 87107 email: [log in to unmask] ===============================================