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. Author manuscript; available in PMC: 2021 May 1.
Published in final edited form as: Magn Reson Med. 2019 Oct 21;83(5):1760–1773. doi: 10.1002/mrm.28031

Figure 2. B1 dispersion experiments.

Figure 2.

a) Z-spectra are plotted as a function of saturation frequency offset (∆ω, in units of ppm) from water resonance (∆ω = 0 ppm) for varying nominal B1 amplitudes (1 μT to 3 μT) acquired in the arm muscle of a healthy female volunteer. b-c) Z-values in the range of APT and NOE are plotted as a function of B1 amplitude, and fit to a second order polynomial (red line). Error bars represent one standard deviation of the parameter within the axillary ROI.