RF accompanying slice select gradients are bound to z channel.

[h3lg3]

Hello again,

I realized that the gradients returned by make_adiabatic_pulse() or make_sinc_pulse() are by default assigned to the z-channel. For example line 148 in make_sinc_pulse(). Should the channel become an optional input argument of make_sinc_pulse()?

Thanks for your opinion.
Kind regards
Helge

In make_sinc_pulse():

    gz = make_trapezoid(
        channel="z", system=system, flat_time=duration, flat_area=area
    )

[schuenke]

hmmm, the gradients returned with the RF pulse are for slice selection and the slice direction is by convention the z-axis. So in my opinion specifying a channel does not make sense. Also keep in mind that we would have to rename return_gz to something like return_grad, which would break compatibility with current python scripts. Not just the ones in the PyPulseq repo, but all scripts from all users.