O2 bottle is never supposed to enter the scan room
When I did anesthesia for MRI we had aluminum O2 tanks. Our Anesthesia machine was designed for MRI machine use. You have to get fairly close to the MRI machine with magnetic material to have a problem. Once you cross that point the magnetic object is buried in the machine. There are you tube vidios of people placing metal objects into MRI machines. They can be pretty entertaining. MRI machines can also “quench”. The electromagnets are cooled by liquid nitrogen. If the cooling apparatus fails the MRI machine will release nitrogen in a rather dramatic fashion. MRI rooms have O2 monitors so if a nitrogen leak reduces O2 levels the staff will be earned. Look up metal objects MRI and MRI quenching.