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Abstract #3339

Three-dimensional MRA Demonstrates Eccentric Enlargement of the Non-Conjoined Cusp-Sinus in Bicuspid Aortic Valve Patients

Pascale Aouad1, Hector I Michelina2, Ian Murphy3, James Carr1, Jeremy Collins1, and Alex J Barker1

1Northwestern University, chicago, IL, United States, 2Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Rochester, MN, United States, 3AMNCH Tallaght Hospital, Dublin, Ireland

Bicuspid aortic valve is associated with ascending aortic dilatation, including the aortic root. The etiology of this aortopathy is controversial, with contributions proposed to come from both genetic and hemodynamic origins. While the pattern of aortic dilatation has been loosely associated with cusp fusion patterns and valve function, no study has investigated if eccentric sinus dilation is present and whether it varies in relation to the BAV phenotype. Thus, this study uses b-SSFP cine imaging and gated CE-MRA or 3D IR SSFP to assess the structure of the bicuspid aortic valve and identify the presence of a dominant sinus.

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