Back pain, MRI or CT?

In clinical, if the patient shows low back pain, is the need to do MRI, or do CT film, according to what is due to the cause of low back pain, and then consider what kind of examination. If suspected of lumbar disc herniation, patients show low back pain, lower limb tingling and other nerve injury symptoms, in clinical examination, the first choice can do CT film, after CT film can be observed intervertebral foramen or nerve root canal stenosis, disc is not prominent. In addition, MRI can also be done, but also can clearly see the degree of compression of the dural sac nucleus pulposus. If the patient is caused by external force psoas muscle injury, showing low back pain, unable to move, can be the first choice to take MRI, can clearly see the extent of muscle damage. In addition, if the patient has lumbar tuberculosis, can take MRI of the lumbar spine, can confirm the presence and extent of tuberculosis lesions.