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Abstract #2859

A Comparison on the Estimated Stiffness and Signal-to-Noise Ratio of Magnetic Resonance Elastography Images Acquired at 3T and 7T

Yuan Le1, Andrew J. Fagan1, Jun Chen1, Eric G. Stinson2, Joel P. Felmlee1, Matthew C. Murphy1, Kevin J. Glaser1, Arvin Arani1, Phillip J. Rossman1, Stephan Kannengiesser3, Bradley D. Bolster, Jr.2, John Huston, III1, and Richard L. Ehman1
1Radiology, Mayo Clinic, Rochester, MN, United States, 2Siemens Medical Solutions USA, Inc., Malvern, PA, United States, 3Siemens Healthcare GmbH, Erlangen, Germany

This study aimed to compare MRE image quality and stiffness measurements performed at 3T and 7T. It was found that in PVC phantom images the estimated stiffness values were very close between images acquired at 7T and 3T; the signal-to-noise ratio (SNR) at 7T was much higher than that at 3T, and the octahedral shear strain based SNR more than doubled at 7T. These results indicate potential of obtaining high resolution MRE images without affecting the stiffness measurement at 7T.

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