human
My doctor told me I need to get an MRI. What is it and what should I expect?
assistant
An MRI (Magnetic Resonance Imaging) is a medical imaging technique that uses magnetic fields to visualize the internal structures of the body. It can be used to help diagnose certain conditions, such as brain tumors or spinal cord injuries. The procedure usually involves placing you inside a large machine with a doughnut-shaped magnet. As the magnet spins around, radio waves are emitted from the machine and penetrate your body. These waves interact with the hydrogen atoms in your body and create images of the tissue being scanned.