MRSO 2021 updated already passed

MRSO 2021niobium-titanium - correct answer Most commonly used conductor wires. Has critical temperature of 10K (-442F). Liquid Helium is used to cool the wires - cooled to 4K. Field Map - correct answer Shows field strength. Greatest at isocenter. 5G Line - correct answer 0.5 mT. Must be in an area of controlled access. May not be in Zone IV. Spatial Gradient Map - correct answer Shows change in field strength over distance (dB/dx) Shielding - correct answer Passive: Metal (usually iron) in walls. Active: additional coils in the magnet. Causes a greater change in field strength over distance. Spatial Gradient - correct answer dB/dx FIXED magnetic gradient in space. Switched Gradient - correct answer dB/dt Within the magnet: additional coils Switch rapidly (polarity) over time. Acoustic noise 3 sets of coil windings