Ultra-short echo time Magnetic Resonance Elastography

Pilar Sango Solanas (1) , Kevin Tse-Ve-Koon (1) , Eric van Reeth (1) , Cyrielle Caussy (2) , O. Beuf (1)

1 RMN et optique : De la mesure au biomarqueur
2 CarMeN - Cardiovasculaire, métabolisme, diabétologie et nutrition

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.

Domaines: Imagerie

Pilar Sango Solanas, Kevin Tse-Ve-Koon, Eric van Reeth, Cyrielle Caussy, O. Beuf. Ultra-short echo time Magnetic Resonance Elastography. ISMRM 2020 28th Annual Meeting & Exhibition, Aug 2020, Virtual Conference, France. ⟨hal-02866021⟩