Human Cardiac Creatine Kinase Flux Measurement at 3T Using 31P Magnetization Transfer MRS

Adil Bashir¹, Robert J. Gropler¹

31P magnetization transfer MRS can measure energy turnover in the myocardium through the creatine kinase (CK) reaction. The in vivo application of this technique has been lagging especially for human studies. We have developed an optimized strategy to measure adenosine diphosphate (ATP) production in human heart via CK system. This is the first demonstration of the technique for human studies at 3T. The high field magnet provides reduction in total experiment time and improved spectral resolution over 1.5T magnet. Our results also demonstrate that the energy production in diabetic heart is impaired.