Cardiac MR thermometry provides a real-time monitoring of temperature distribution in myocardium during catheter-based radiofrequency ablation. One major challenge of this technique is the compensation of motion induced by the heart contraction and respiration. In this study, we propose to perform fast multi-slice proton resonance frequency (PRF) shift MR thermometry combined with a real-time slice following technique, based on active catheter tracking. Performance of this approach was evaluated in vitro on a moving agar gel phantom.
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