The preferred imaging method for spinal cord lesions, the most direct and intuitive, is MRI. MRI is the best for displaying spinal cord signals, while CT is better for displaying mainly bone. MRI is very good at showing spinal cord signals such as spinal cord contusions, spinal cord-occupying tumors, and spinal cord hemorrhage. So the best test for the spinal cord is MRI. There are some vascular lesions that can also be done with spinal angiography, such as vascular malformations, vascular fistulas, and these can be resolved with angiography, but the best and most direct is MRI. There are a couple of contraindications to MRI, such as having a pacemaker, which may be contraindicated. The second is the presence of metallic foreign bodies in the skull. The MRI doctor has to evaluate that, such as dentures or pacemakers or intracranial aneurysm clips, and those have to be specifically indicated to the doctor. There are also some people with shielding, some people with MRI have space shielding, can not adapt to that kind of space, can not complete the examination, can only be changed to CT. there is also a longer time to do the MRI, breathing is not good, vital signs are not stable or not, too heavy patients can not be done in this examination.