4 ms·

Or just MRI machines that can function without the increasingly expensive liquid helium.

• fluidcruft 4y ago
  Newest MRI scanners aren't as bad about helium. What I understand is the "problem" mostly was that they used to be designed for an environment where helium was cheap. So helium cost wasn't a major design factor prior to the newest generation of magnets. The old designs are still shipped/refurbished/remanufactured though. I also think they're still manufactured new, too, but I'm not sure. In any case most if not all of the major manufacturers have new models that drastically reduce the amount of helium to a few liters and recapture well enough to the point that both refills and even quench pipes are not required for some models.