this post was submitted on 01 Apr 2026
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Unfortunately it's also critical for MRIs.
My understanding is that MRIs don't consume helium, in the same way air conditioning units don't consume refrigerant, so helium is only needed for making new MRI machines.
New ones, and not all if them, work this way, as in there's tiny helium condensing unit. Older ones just let it go and require topping up every couple months (guessing by how often helium in NMR is topped up). Also every emergency shutdown invariably blows off all of helium inside