3 ms·
300-1800W power draw seems impressive! It looks like standard machines are using something on the order of 25kW while scanning, which certainly sounds prohibiti
by tkzed49 2y ago
300-1800W power draw seems impressive! It looks like standard machines are using something on the order of 25kW while scanning, which certainly sounds prohibitive for less developed infrastructure.
- ChrisMarshallNY 2y agoAlso, they need to keep vats of liquid helium around. Difficult stuff to store. I knew they needed cold gas, but liquid helium is crazy.
- jahnu 2y agoThere was some buzz years ago about using liquid nitrogen instead but I don’t know if it made it into widespread production https://www.wired.com/story/mri-magnet-cooling/ https://www.wired.com/story/mri-magnet-cooling/
- nullc 2y agoSounds like that's more about using a cryocooler to minimize the helium used-- but presumably that requires keeping the coils in a particularly hard vacuum to adequately insulate them. There is some research towards operating at liquid hydrogen temperatures -- but hydrogen has its own logistical challenges.