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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Magn Reson Med. 2019 Jan 28;81(6):3476–3487. doi: 10.1002/mrm.27655

Figure 4. In vivo Z-spectra analysis of the hindlimb with different powers (a-c) or with different field strength (d-f).

Figure 4.

Z-spectra with error bars are shown comparing saturation powers of 0.47 μT (blue) or 0.71 μT (turquoise) with a 4 s duration at 15.2T (a) or at 9.4 T (red) or 15.2 T (blue) with a fixed power of 0.47 μT (d). Error bars are only shown on one side of the curve for better visualization. Expanded Z-spectra (b,e) at a range of 1.0 to 4.0 ppm inset with a statistical comparison of peak height from Lorentzian fitting. The multi-Lorentzian fit is shown (c,f) with the PCr peak inset and the residue overlaid on the fit in dashed lines. Blue arrows: amide; orange arrows: PCr; brown arrows: Cr.