I got an MRI with injected contrast today for a wrist injury and my wrist is now really puffy. My right wrist, naturally. And since I’m not so good at left-handed typing, today all you get is this video about how MRI’s work, with a very enjoyable narrator. This is mostly the result of me passing the time in the machine by wondering about MRI’s work. Also, it’s something I can look up while I sit here with an ice pack on my wrist.