Grad amplitude bug in example sequence write_tse.seq

[h3lg3]

The rf refocussing pulse gradient for slice selection uses the amplitude from the excitation pulse gradient. I believe the amplitude from the previously generated gz gradient for the refocussing pulse should be used instead.

pypulseq/examples/scripts/write_tse.py

Line 91 in 0398b12

amplitude=gs_ex.amplitude,

    gs_ref = pp.make_trapezoid(
        channel='z',
        system=system,
        amplitude=gs_ex.amplitude, # here gz.amplitude should be used
        flat_time=t_refwd,
        rise_time=dG,
    )