make_gslider_pulse

pypulseqpp.make_gslider_pulse()

Design a gSlider slab pulse with subslice at subslice_phase.

One pulse per sub-slice, combined across acquisitions, resolves the slab into num_subslices sub-slices (Setsompop et al., Magn Reson Med 79:141, 2018). The SLR design is exact for flip_angle, so the pulse plays at its designed amplitude rather than being scaled by area.

Parameters not listed below are as in make_slr_pulse().

Parameters:

• subslice (int) – Encoded sub-slice, in [0, num_subslices), counted from the most negative position under a positive selection gradient.

• subslice_phase (float, default=np.pi) – Phase of the encoded sub-slice relative to the rest of the slab, in rad.

• slice_thickness (float, default=0.0) – Whole slab, in m; required when return_gz.

Returns:

The pulse; under return_gz, (rf, gz, gzr): the pulse, its selection gradient and its rephaser.

Return type:

RfEvent or tuple

Raises:

ValueError – If subslice is out of range, or the time-bandwidth product does not fit the pulse’s samples.