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.
