Entering a magnetic resonance imaging (MRI) machine can be a nerve-wracking experience. You're trapped in a tight space and have to lie perfectly still as loud noises -- produced by the current in the scanner coils -- pepper your eardrums. To help patients, and in particular children, the Kings College Hospital in London has turned to VR. MRI physicist Jonathan Ashmore and technologist Jerome Di Pietro have produced an app that contains a 360-degree video. Slip on a Google Cardboard and you'll see what happens on the day, from arrival to stepping inside the scanner.