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Abstract #1815

Strain Measurements with Displacement ENcoding with Stimulated Echoes (DENSE) Are Robust to Off Resonance

Meral Reyhan1, J A. Derbyshire2, Daniel Bruce Ennis1

1Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, CA, USA; 2National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA

The objective of this study was to define the effects of off-resonance on displacement and strain measures in a DENSE experiment using Bloch simulation and an analytic solution. Displacement errors from off-resonance for the stimulated-echo and stimulated-anti-echo are similarly sensitive to off-resonance. Off-resonance induced strain errors for the stimulated-echo are <0.2% for a wide range of off-resonance (0-10Hz) and strain values (5% and 20%). Off-resonance strain errors for the stimulated-anti-echo are <20% for 5% strains and <10% for 20% strains. The off-resonance induced strain error calculated from the stimulated-echo is robust to the effects of a wide range of off-resonances.