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. Author manuscript; available in PMC: 2015 Jun 1.
Published in final edited form as: NMR Biomed. 2014 Apr 6;27(6):663–671. doi: 10.1002/nbm.3103

Figure 3.

Figure 3

(a) Spectrum demonstrating calibration of AHP pulse. Spectrum amplitude initially increased with B1 field strength and reached a maximum value at B1 = 0.7 kHz. Further increase in B1 did not affect the spectral peak intensity confirming uniform 90° excitation over the region of interest. (b) Plot shows the frequency dependence of AHP pulse. The adiabatic conditions were met in ~400 Hz around the resonance frequency. This bandwidth is appropriate to simultaneously quantify PCr and γ-ATP which are approximately 120 Hz apart at 3T.