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Abstract #3618

Automatic temperature control during MR guided catheter based radiofrequency ablation of the heart

Valery Ozenne1, Thibaud Troadec1, Pierre Bour1, Solenn Toupin1,2, Erik Dumont3, and Bruno Quesson1

1Institut Hospitalier Universitaire : LIRYC Institut de Rythmologie et Modélisation Cardiaque, Bordeaux, France, 2Siemens France, Saint Denis, France, 3Image Guided Therapy, Bordeaux, France

Although catheter-based radiofrequency (RF) ablation is increasingly used to treat cardiac arrhythmia, insufficient temperature increase may lead to incomplete treatment whereas excessive local energy deposition may result in severe adverse effects (e.g. esophageal fistulas or tamponade due to steam pop). Since MR thermometry can monitor in real-time the temperature distribution in the cardiac muscle, automatic regulation of RF energy deposition from temperature images, using well established proportional, integral controller algorithms, may improve safety and efficiency of the therapeutic procedure.

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