In-room imaging and MR planning

Magnet Field (B0)

• Low sensitivity requires very high field • 1 Tesla = 10,000 Gauss cf. 0.3-0.7 G earth’s field • Mostly superconductors Niobium-titanium (9.5 K) field decay: 5-10 G y -1 field stability: <0.1 ppm h -1

1987: Elscint’s Gyrex System

Philips’ vertical HFO System