trapGrad¶

For trapezoidal gradient, it is efficient to specify both width and area of a desired gradient, and the lobe shape will be automatically generated according to the peak gradient strength as well as the slew rate of a specific gradient system.

peak_grad{40} -- T/m
slew_rate{200} -- T/m/s
g1 = trapGrad{axis ="x", width = 2, area = 70}
g2 = trapGrad{axis ="z", width = 2, amp = 35}
g3 = trapGrad{axis ="x", flat_time = 5, amp = 40}
g4 = trapGrad{axis ="y", flat_time = 5, flat_area = 150}