In-room imaging and MR planning

‘db by dt’

• Gradient waveform trapezoidal • Amplitude, Rise time, Slew rate e.g. 40 mT/m & 200  s = 200 T/m/s • Rapid changes (‘db/dt’) potential safety aspects

Max amplitude plateau

Slew Rate (T/m/s) = Amplitude (mT/m) Rise Time (  s)

Rise time