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Abstract #2721

Use of 4D Flow MRI to Investigate if Aortic Tissue Resection without an Open Distal and Hemi-Arch Procedure Addresses All Regions Suspected for Progression of Bicuspid Aortopathy

Alex J Barker 1 , Pim van Ooij 1 , David Guzzardi 2 , S. Chris Malaisrie 3 , Patrick M. McCarthy 3 , James Carr 1 , Jeremy Collins 1 , Michael Markl 1,4 , and Paul W. M. Fedak 2,3

1 Radiology, Northwestern University, Chicago, IL, United States, 2 Department of Cardiac Sciences, University of Calgary, Calgary, AB, Canada, 3 Division of Surgery-Cardiac Surgery, Northwestern University, Chicago, IL, United States, 4 Biomedical Engineering, Northwestern University, Chicago, IL, United States

Aggressive aortic resection strategies for bicuspid aortic valve (BAV) patients with significant aortopathy are sometimes warranted. Recent evidence has shown that 4D flow MRI can identify regions of the aorta with elevated wall shear stress (WSS) that may be at risk of disease progression and thus may require resection during aneurysm repair. This study assessed the efficacy of standard aortic resection practices at our instition to include tissue areas at risk as determined by pre- and post-operative imaging. In selected patients with BAV, aggressive resection using open distal/hemi-arch repair acheived complete resection of tissue at risk of disease progression.

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