Imaging for Physicists

Gradients

Manufacturer

Field Strength (T)

SPL (dB(A))

• Eddy currents degrade imaging pre-emphasis (compensation) Active shielding • Lorentz force causes vibrations

Philips

1.5 1.5 1.5 3.0 3.0

112 106 110 118 113

Siemens

GE

Varian Bruker

First Field

Noise & reduction methods

thuMb

Motion

seCond

Current