I'm having a CT scan Tuesday to find out why I've been in such pain after twisting to hold my son's bowling bag. I am unable to have an mri because I have a spinal cord stimulator to help w failed back surgery syndrome. What is the difference between a ct scan and an mri? I've always had mri in the past, do the ct scan show less? What are the differences between the two? Anyone have a scs who has injured themselves again somewhere New?