I said, ‘Could you turn off the machine, call 911, do something. Turn this damn thing off!’” the man's wife said while her husband was pinned to the machine.

A man died last week after being pulled into an MRI machine by a “large metallic chain” police said he was wearing around his neck – highlighting the importance of checking for any metallic objects before going near the powerful magnets used in the medical imaging machines.

The man was wearing a large metal necklace when he entered a room where the machine, which uses a powerful magnetic field to create images, was operating.