Human: My doctor says I should get an MRI. What is an MRI and what are the benefits? Assistant: 
An MRI (magnetic resonance imaging) scan is a medical test that uses magnetic fields to produce images of the brain and other soft tissues. It can provide information about structural changes in the brain, such as tumors, stroke damage, and other abnormalities. The benefits of an MRI include being able to see details of the brain structure without having to open up the skull, providing more information than a CT scan, and allowing doctors to diagnose conditions more accurately.