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Abstract #3613

First clinical evaluation of real-time cardiac MR thermometry

Valéry Ozenne1, Solenn Toupin1,2, Pierre Bour1, Baudouin Denis de Senneville3, Alexis Vaussy2, Matthieu Matthieu Lepetit-Coiffé2, Pierre Jaïs1,4, Hubert Cochet1,4, and Bruno Quesson1

1Institut Hospitalier Universitaire : LIRYC Institut de Rythmologie et Modélisation Cardiaque, Bordeaux, France, 2Siemens France, Saint Denis, France, 3Mathematical Institute of Bordeaux, Bordeaux, France, 4Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France

Catheter ablation using radiofrequency is commonly used to treat cardiac arrhythmia. However, direct assessment of lesion formation with MRI thermometry during RF delivery may improve safety and efficiency of the therapeutic procedure. Despite recent studies demonstrating the feasibility on volunteers or animal models, there are no reports regarding the possibility of doing cardiac thermometry on patient in the context of arrhythmias. The purpose of the present study was to evaluate the uncertainty of temperature estimate on patients depicting potential arrhythmic episodes, which may alter the precision of the method relying on an ECG-triggered acquisition.

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