Pulseq

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Matlab and Python codes to write a 3D Phase-Cycled bSSFP Cartesian Sequence in the Pulseq Framework.

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Available codes

1. "write_pypulseq_PhaseCycledbSSFP.py"

2. "write_pulseq_PhaseCycledbSSFP.m"

Sequence parameters

FOV [mm]	Spatial Resolution	TR [ms]	TE [ms]	RF Excitation Angle [°]	Number of Phase Cycles	BW [Hz]
384x192x192	384x192x64	5.02	2.51	20	18	868

Implementation

Steady-state Block

• Rectangular RF preparation pulses

Data Acquisition Block

• Rectangular RF excitation pulse
• Trapezoidal prephaser gradients in readout (Gx), phase (Gy) and slice (Gz) encoding directions
• ADC event

Gradient Balance Block

• Trapezoidal rephaser gradients in readout (Gx), phase (Gy) and slice (Gz) encoding directions

Phase-Cycling

• Incrementation of RF excitation angle

Diagram