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Abstract #0168

Ultra-short echo time Magnetic Resonance Elastography

Pilar Sango Solanas1, Kevin Tse Ve Koon1, Eric Van Reeth1, Cyrielle Caussy2, and Olivier Beuf1
1Univ Lyon, INSA‐Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1206, F‐69616, Lyon, France, Lyon, France, 2Département d’Endocrinologie, Diabète et Nutrition, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, CarMeN, INSERM U1060, INRA U1397, Lyon, France, Lyon, France

Magnetic Resonance Elastography (MRE) is a valuable technique to quantitatively characterize mechanical properties of tissues based on the properties of shear waves propagation. In this study, a radial acquisition MRE sequence potentially able to quantify viscoelastic parameters of tissues whose T2 values are very short is proposed. To this end, an optimal control-based RF pulse is applied with a constant gradient during the mechanical excitation to simultaneously perform spatially selective excitation and motion encoding. Acquisition is started right after, enabling a very short TE. Results on phantom experiments demonstrated the feasibility of our ultra-short echo time MRE technique.

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