Temel Kaya Yasar1, Dieter Klatt2, Richard L. Magin2, Thomas J. Royston2
1Department of Mechanical & Industrial Engineering, The University of Illinois at Chicago, Chicago, IL, United States; 2Department of Bioengineering, The University of Illinois at Chicago, Chicago, IL, United States
We introduce selective spectral displacement projection (SDP) as a new motion encoding concept for 3D multifrequency MRE. SDP-MRE can be applied to a vibration spectrum composed of three frequencies and exploits the filter condition of MRE for selecting one frequency each per spatial direction. The selected components are simultaneously encoded in the phase of the MR signal and the acquisition of temporally-resolved phase images enables the decomposition of the individual components. SDP-MRE reduces the number of temporally-resolved MRE experiments for data acquisition by a factor of 3, while providing the same wave images as found using conventional monofrequency MRE.