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Abstract #1245

Dual Inversion Recovery Pre-Pulse Differentiates Contrast Uptake from Oedema in Late Gadolinium Enhancement Imaging of the Atrial Wall After Radiofrequency Ablation

Sarah Anne Peel1, Aruna Arujuna1, Reza Razavi1, Kawal Rhode1, Jaswinder Gill1, Tobias Schaeffter1, Rene Botnar1

1Division of Imaging Sciences and Biomedical Engineering, King's College London, The Rayne Institute, London, United Kingdom

Pulmonary vein isolation using RF ablation is an established treatment for patients with atrial fibrillation. Late gadolinium enhancement (LGE) imaging can be performed acutely after ablation using the inversion recovery (IR) pre-pulse. However, the IR pre-pulse generates high signal from areas of oedema as well as contrast uptake. In this study, we showed that the dual-IR pre-pulse only generates high signal from areas of contrast uptake whilst suppressing the signal from fluid and normal atrial wall. This may help differentiate contrast uptake from oedema in LGE imaging to visualize acute damage caused by RF ablation.