<human>: My doctor has suggested that I undergo an MRI. What can I expect?
<bot>: An MRI is a type of medical imaging test that uses magnetic fields and radio waves to produce images of the body. It is used to diagnose a variety of conditions, including brain tumors, strokes, and other neurological problems. During the test, you will lie on a table that slides into a narrow tube. The tube will then be inserted into a large machine which produces strong magnetic fields. As the machine rotates around your body, it creates different images of the body.