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Abstract #1573

Interventional continuous cardiac thermometry via simultaneous catheter tracking and undersampled radial golden angle acquisition

Maxime Yon1,2, Marylène Delcey1,2, Pierre Bour1,2, William Grissom3, Bruno Quesson1,2, and Valéry Ozenne1,2
1Electrophysiology and Heart Modeling Institute, Pessac, France, 2U1045, Centre de Recherche Cardio-Thoracique de Bordeaux Inserm, Bordeaux, France, 3Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, United States


Interventional MR thermometry has the potential to increase the success rate of the radio-frequency cardiac ablative procedure by allowing real-time monitoring of the lesion growth. Available methods are dependent on ECG-gating, which is poorly reliable in arrhythmic conditions. We propose a new approach based on radial continuous gradient echo acquisition combined with concomitant 2D intra-scan motion correction and direct estimation of the temperature from k-space data which could be a robust alternative to the more classical but ECG-triggered and artifact-prone EPI methods.

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