Abstract #1692
Power-Law Multi-Frequency MRE Reconstruction
Elijah EW Van Houten 1 , Curtis L Johnson 2 , Aaron T Anderson 2 , Joseph L Holtrop 2 , Bradley P Sutton 2 , John G Georgiadis 2 , Matthew D McGarry 3 , John B Weaver 3 , and Keith D Paulsen 3
1
Univ. de Sherbrooke, Sherbrooke, QC, Canada,
2
Univ.
Illinois at Urbana-Champaign, IL, United States,
3
Dartmouth
College, NH, United States
A multi-frequency magnetic resonance elastography image
reconstruction method is presented with power-law
frequency dependency for the elastic properties. The
method is based on a nonlinear inversion framework and
uses a generalized Rayleigh damping model for the soft
tissue elastic energy absorption. Comparative
reconstructions in a healthy brain, based on three
frequencies of excitation, show improved fidelity and
definition within the power-law multi-frequency image.
Structures such as the ventricles and the falx cerebri
are clearly defined and possess material property values
in line with expectations.
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