An MRI uses strong magnets to take amazingly detailed pictures of the inside of your body.
The structure of your bones is always changing with new bone tissue being laid down and old bone tissue being resorbed by your body.
The traditional MRI, although capable of producing more detailed images than an X-ray or CT scan, does have some drawbacks. You have to lie very still for a long time in a narrow tunnel-like space inside the MRI machine to obtain proper images.
Neck or low back pain that radiates into your arms or legs is often a sign of impingement or pinching of a nerve as it emerges from your spinal cord. An MRI may be able help identify structural lesions that may be pressing against the nerve so the problem can be corrected before permanent nerve damage occurs.
A concussion is a functional brain injury resulting from a direct blow to the head or the result of the brain being exposed to abnormal forces (without a direct blow to the head) as in a whiplash event occurring in sporting events or motor vehicle accidents.