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Abstract #2149

Self-Navigated, Free-Breathing 3D Left Atrial Late Gadolinium Enhancement MRI with Stack-of-Stars k-space Sampling and GRASP Reconstruction: A Preliminary Study for Quantification of Atrial Fibrosis

Suvai Gunasekaran1, Hassan Haji-Valizadeh1, Rod Passman1, Daniel C Lee1, and Daniel Kim1

1Northwestern University, Chicago, IL, United States

Given the thin nature of the left atrial (LA) wall (1-3 mm) and the need to perform respiratory gating with navigator echoes, the clinical translation of LA late gadolinium-enhanced (LGE) MRI has proven difficult. This study describes a self-navigated, free-breathing 3D LA LGE pulse sequence with stack-of-stars k-space sampling and GRASP reconstruction. This study shows initial experience in quantifying LA fibrosis in patients with atrial fibrillation undergoing ablation therapy.

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