Cardiac magnetic resonance imaging for preprocedural planning of percutaneous left atrial appendage closure

An isotropic 2D six-point Dixon method was applied for assessment of the left arterial appendix (LAA) morphology prior to LAA closure intervention. Sufficient image quality was achieved even in highly arrhythmic patients allowing for the preinterventional quantification of the LAA dimensions as required for proper closure device selection. MR derived diameters were compared to periprocedurally TEE and XR derived values, which were in good agreement. Further, optimal XR angulation providing projections perpendicular to the envisaged landing zone could be identified.