sigpy.mri.rf.trajgrad.trap_grad

sigpy.mri.rf.trajgrad.trap_grad(area, gmax, dgdt, dt, *args)

General trapezoidal gradient designer for total target area (for rewinders)

Parameters:

• area (float) – pulse area in (g*sec)/cm
• gmax (float) – maximum gradient in g/cm
• dgdt (float) – max slew rate in g/cm/sec
• dt (float) – sample time in sec

Returns:

2-element tuple containing

• trap (array): gradient waveform in g/cm.
• ramppts (int): number of points in ramps.