<human>: My doctor says I need to get an MRI. What is an MRI and why is it important?
<bot>: An MRI (magnetic resonance imaging) scan is a medical imaging technique that uses magnetic fields to visualize the internal structures of the body. It is used to diagnose and evaluate many different types of conditions, such as brain tumors, spinal cord injuries, strokes, and other neurological disorders. An MRI can also be used to assess joint damage in athletes or people with arthritis. The images produced by an MRI are very detailed and provide doctors with valuable information about the patient’s condition.