3 ms·
I assumed it was an electromagnet. Do MRIs all have permanent magnets?
by hermitcrab 5y ago
I assumed it was an electromagnet. Do MRIs all have permanent magnets?
- lostlogin 5y agoMost are superconducting electromagnets, so.. sort of? They have shipped full of liquid helium then get ramped up (or at least, this is how Siemens do it). With any luck they stay up for many years.