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Abstract #2696

New Method to Validate in vivo 2D Displacements from Spiral Cine DENSE at 3T

Gregory J Wehner 1 , Jonathan D Suever 2 , Christopher M Haggerty 2 , Linyuan Jing 2 , David K Powell 1 , Sean M Hamlet 3 , Jonathan D Grabau 2 , Dimitri Mojsejenko 2 , Xiaodong Zhong 4 , Frederick H Epstein 5 , and Brandon K Fornwalt 1,6

1 Biomedical Engineering, University of Kentucky, Lexington, KY, United States, 2 Pediatrics, University of Kentucky, Lexington, KY, United States, 3 Electrical Engineering, University of Kentucky, Lexington, KY, United States, 4 MR R&D Collaborations, Siemens Healthcare, Atlanta, GA, United States, 5 Biomedical Engineering, University of Virginia, Charlottesville, VA, United States, 6 Physiology and Medicine, University of Kentucky, Lexington, KY, United States

Displacement Encoding with Stimulated Echoes (DENSE) is a cardiac magnetic resonance technique that encodes tissue displacement into the phase of the MR signal. A spiral acquisition has been used at 1.5T to efficiently acquire data and increase SNR. This sequence has not been validated at 3T, where the SNR would be higher, but field inhomogeneities may lead to measurement errors. We developed a novel method for measuring displacement errors in vivo and applied it in humans at both 1.5T and 3T. Our primary finding is that the same spiral cine DENSE acquisition that has been used at 1.5T can be applied at 3T with equivalent accuracy.

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