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. Author manuscript; available in PMC: 2009 Apr 1.
Published in final edited form as: J Magn Reson. 2007 Dec 31;191(2):248–258. doi: 10.1016/j.jmr.2007.12.015

Fig. 3.

Fig. 3

Typical 31P MRS spectra (a–c) of an exemplary 1-cm slice in the anterior myocardium (d; annotated with horizontal white lines) extracted from a FAST CK flux study of a 55-year-old woman with New York Heart Association Class I–II heart failure at 1.5 T [3,4]. (a,b) Two of the four FAST acquisitions excited with a 60° pulse and control saturation (a; vertical arrow), and with γ-ATP saturated (b). The reduction in PCr signal between (a) and (b) is due to CK flux in the heart. 31P Spectrum (c) is acquired with no saturation, to measure PCr concentration, and to measure the spillover effect. The reduction in PCr signal between (a) and (c) is due to spillover irradiation, and is quantified by Q.