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Abstract #0289

Feasibility of MR-Thermometry with Blood Suppression on the Human Heart at 3T

Silke Hey1, Alexandru Cernicanu2, Baudouin Denis de Senneville1, Sebastien Roujol1, Mario Ries1, Chrit T. W. Moonen1, Bruno Quesson1

1Laboratory for Molecular and Functional Imaging, Bordeaux, France; 2Philips Healthcare, France

Ventricular tachycardia and atrial fibrillation can be treated by catheter radio-frequency ablation where PRFS-based MR thermometry is a candidate to provide intra-procedural feedback. However, MR thermometry of the heart is challenging. As blood suppression is preferable to avoid artifacts in the myocardium, we explore three different options, namely double inversion recovery (DIR), motion-sensitized driven equilibrium (MSDE), and inflow saturation (IS). The effectiveness of the blood suppression and its effect on the temperature stability in the septum is evaluated in eight healthy volunteers for 50s of free-breathing using VCG cardiac triggering and navigator respiratory compensation.