It took some detective work, but they think they know what was the cause. The MRI machine uses liquid helium to cool its powerful magnets. Turns out the helium had leaked and over 5 hours about ...
Liquid helium is a valuable commodity - the gas becomes a liquid at about about 450 degrees below zero Fahrenheit. What needs to be kept so chilly? Every MRI scanner on the planet, for one thing.
Cryogenic liquids are materials with a boiling point of less than – 100 °F (-73 °C); common examples include liquid nitrogen, helium, and argon, and dry ice/alcohol slurries. Cryogenic liquids undergo ...