Abstract #0044
Interventional Magnetic Resonance Elastography for MRI-guided percutaneous procedures.
Nadge Corbin 1 , Jonathan Vappou 1 , Elodie Breton 1 , Quentin Boehler 1 , Laurent Barb 1 , Pierre Renaud 1 , and Michel de Mathelin 1
1
ICube, Universit de Strasbourg, CNRS, IHU
Strasbourg, Strasbourg, France
Monitoring thermal therapies is essential to ensure
precise and complete ablation of diseased tissues. Since
tissue elasticity is modified by thermal ablation, this
work aims at developing interventional magnetic
resonance elastography (MRE) dedicated to the monitoring
of percutaneous thermal ablations. A piezoelectric
needle MRE driver is triggered on a fast interactive
MR-pulse sequence with motion encoding. An inverse
problem solver provides elastograms in real-time using
an optimized number of phase-offsets and a sliding
window scheme. In vivo feasibility was established in
swine liver, and feasibility to monitor elasticity
changes in real-time (every 2.56s) was demonstrated in a
gelifying phantom.
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