Time-Resolved MR Angiography Pre-Catheter-Based Ablation for Atrial Fibrillation

Michael Schonberger¹, Asad Usman¹, Aya Kino¹, Andrada Popescu¹, Maurizio Galizia¹, Jeremy Collins¹, James Carr¹, Timothy Carroll¹

Time-resolved angiography with interleaved stochastic trajectories (TWIST) MR angiography of the pulmonary venous circulation improves arterio-venous separation, does not require exact bolus timing, gives additional information on vein perfusion, and still maintains a high spatial resolution compared to the conventional contrast enhanced-MRA.