Lumbar disc herniation can be done both by lumbar MRI and lumbar CT. Both of these tests can determine the diagnosis of lumbar disc herniation. However, according to the degree of detail, for example, when there is no spinal deformity, severity of soft tissue hyperplasia, or spinal stenosis, it is better to do MRI. This is because MRI can examine the degree of lumbar disc herniation and the degree of compression of the dural sac in more detail, and it can also clearly find out whether there is edema and damage caused by nerve compression. CT is superior to MRI in identifying bone, soft tissue, and disc tissue in spinal stenosis, but CT scans are sometimes unable to identify disc herniations as scar adhesions. Therefore, MRI is preferred as much as possible when there is a lumbar disc herniation, but also needs to be performed under the guidance of a physician on a case-by-case basis. As to whether it is better to do CT examination or MRI examination for lumbar disc herniation, it is recommended that one should go to a regular hospital for examination under the guidance of a doctor.