Nadège Corbin1, Jonathan Vappou1, Pramod Rao1, Benoit Wach1, Laurent Barbé1, Pierre Renaud1, Michel de Mathelin1, and Elodie Breton1
percutaneous thermal ablations are currently monitored by MR thermometry.
However, no information related to intrinsic property changes of the tissue is
available during the procedure. The feasibility of monitoring in vivo thermal
ablations by simultaneous Magnetic Resonance Elastography (MRE) and
MR-thermometry is demonstrated in this work. The interventional MRE system
includes a needle MRE driver, a respiratory triggered gradient-echo sequence with
motion encoding and an online reconstruction method that provides elasticity
and temperature measurements in real-time.
Changes in elasticity and temperature occurring during laser thermal
ablation are successfully measured in vivo over 20 minutes thanks to this
interventional MRE system.