Man left in critical condition after he was sucked into MRI machine while wearing metal necklace

There are a number of precautions when it comes to MRI machines (Getty Stock Photo)

As for how strong the magnetic field within the MRI system is, the University of California, San Francisco’s Department of Radiology and Biomedical Imaging explains it perfectly: “The static magnetic field of the MRI system is exceptionally strong. A 1.5 T magnet generates a magnetic that is approximately 21,000 greater than the earth’s natural field.”

They further add that even small metal objects, like paper clips, can become projectiles at a terminal velocity of 40mph.

However, CBS News further reports that experts say that injuries and deaths linked to MRI machines are rare involving an object, such as a piece of jewellery.