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Abstract #0780

Asymmetric GOIA pulses for highly selective B1 and T1 independent outer volume suppression

Chathura Kumaragamage1, Peter B Brown1, Scott McIntyre1, Terence W Nixon1, Henk M De Feyter1, and Robin A de Graaf1
1Department of Radiology and Biomedical Imaging, Magnetic Resonance Research Center, Yale University, New Haven, CT, United States

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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