An asymmetric GOIA pulse was developed (Tp = 6.66 ms, BW = 20 kHz) by combining two adiabatic half passage pulses (hyperbolic secant and hyperbolic tangent GOIA modulations). The pulse achieves an asymmetrical excitation/inversion profile, thus was used in a multi-pulse OVS sequence to achieve an efficient, highly-selective, B1 and T1-independent signal suppression with a transition width of only 1.7% of the bandwidth.
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