2016_Imaging for Physicists

Gradients

• Gradient waveform trapezoidal • Amplitude, Rise time, Slew rate e.g. 10-50 mT/m, 200  s & 20-150 T/m/s • Linearity Distortion for RT planning? GradWarp or similar in 2D/3D ?

Max amplitude plateau

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

Rise time