What is the benefit of an MRI for back issues?

Diagnosis. An MRI could very helpful in diagnosing the cause your back pain. It is used to look at the muscles & other tissues in your back. Mri is very useful in looking at the spinal cord, nerves, muscles, ligaments of the spine. It can show areas of inflammation, nerve root compression, and pressure on the spinal cord.
More detailed pics. Mri will allow very detailed pictures to be taken of ligaments, tendons, nerves, intervertebral discs, and even vascular structures (in addition to the bones). No other imaging modality shows these structures with the same clarity. If you have back pain and an x-ray (which looks only at bones) did not provide an answer, an MRI may be of great value in providing answers.
Pre-operative test. An MRI scan has, per se, no therapeutic benefits. I consideri it a pre-operative test. That is to say: when someone has worrisome findings: back pain with severe leg pain not responding to medication, rest, physical therapy, or steroids, weakness or lost reflexes in the leg, loss of bladder or bowel control, an MRI is performed to see if surgery is needed to prevent permanent nerve damage.