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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