Calculation of Myocardial Stiffness Using a Rapid Multiphase MRE in a Heart Simulating Phantom

Arunark Kolipaka¹, Kiaran P. McGee¹, Philip A. Araoz¹, Kevin J. Glaser¹, Armando Manduca¹, Richard L. Ehman¹

MR elastography (MRE) is a new method for quantifying the mechanical properties of myocardium. Previously this technique has been applied to sample one point of the cardiac cycle. The purpose of this study was to compare stiffness estimates obtained using a multiphase to single-phase MRE technique in an object undergoing cyclic deformation. MRE derived stiffness estimates between the two methods are highly correlated with a significant reduction in the acquisition time was achieved with the multiphase technique.