Mohammad Haris1, Kejia Cai1, Anup Singh1, Ravi Prakash Reddy Nanga1, C Damodar Reddy1, Hari Hariharan1, Ravinder Reddy1
1Radiology, University of Pennsylvania, Philadelphia, PA, United States
In the current study, our objective was to map the change in creatine (Cr) level in response to mild exercise at high spatial resolution in calf muscles by exploiting the chemical-exchange-saturation-transfer effect between Cr amine proton and bulk water protons (CrEST). After exercise an increase in CrEST contrast was observed in each calf muscles, which return to baseline following relaxation. We conclude that high resolution imaging of Cr is possible without any contamination from PCr. This technique may provide an opportunity to map any alteration in the [Cr] and creatine kinase reactions at high spatial resolution in muscle pathologies.