sigpy.mri.rf.trajgrad.min_trap_grad¶
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sigpy.mri.rf.trajgrad.
min_trap_grad
(area, gmax, dgdt, dt)[source]¶ Minimal duration trapezoidal gradient designer. Design for target area under the flat portion (for non-ramp-sampled pulses)
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.