What to do MRI: First, to see the cervical spine disease, through the magnetic resonance can get more information, not only can see whether there is a herniated disc, whether there is no bone hyperplasia, whether there is cervical spondylosis and so on, but also can see whether there are lesions in the spinal cord, whether there is a spinal cord cavity, whether there is degeneration of the spinal cord, whether there is a tumor of the spinal cord, or to see the condition of the spinal canal, so in general the cervical spine, lumbar spine with magnetic resonance examination It is better. In addition, the whole cranial brain, the cranial brain will be routinely screened by CT first, and then further MRI examination will be done when lesions are found. The second one is to look at joints, such as meniscus, knee and shoulder joints, which cannot be replaced by CT, but must be seen by MRI. The other is to look at some uterine accessories, including the prostate, MRI is also more advantageous than CT. Of course, CT also has certain advantages in this area, but compared with MRI, MRI is more suitable and better.