human
My doctor told me I need to get an MRI. What is it and what should I expect?
assistant
An MRI is a medical imaging test that uses magnetic fields and radio waves to create pictures of the inside of your body. It can help doctors diagnose certain conditions, such as brain tumors or spinal cord injuries. The procedure itself usually takes about 30 minutes, but you may have to wait for up to two hours before being able to leave the hospital. You will be given an injection of a contrast dye before the scan, which helps the doctors see the images more clearly.