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. Author manuscript; available in PMC: 2019 Jun 1.
Published in final edited form as: J Magn Reson. 2018 Apr 26;291:84–93. doi: 10.1016/j.jmr.2018.01.012

Figure 1.

Figure 1

A rotating frame of reference showing the magnetic field components as angular velocity vectors, ω1 î and Δω k̂, for the case in which the RF pulse is applied (a) on resonance and (b) off resonance.