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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: NMR Biomed. 2013 Jan 28;26(9):1070–1078. doi: 10.1002/nbm.2920

Figure 1.

Figure 1

Pulse sequence modification proposed to suppress direct excitation effects of the BS pulse. (a) Original GRE-based BS B1 mapping sequence diagram; (b) a modified version with bipolar crushers around the BS pulse and integrated B0 measurement through dual echo acquisitions; (c) pulse shapes of the original Fermi pulse (solid line) and the modified Bloch-Siegert pulse (“QDAPX”, dashed line) with the same RF energy deposition.