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Abstract #2469

Estimation of transvalvular flow jet angle using 4D flow MRI and flow jet shear layer detection

Julio Garcia 1 , Michael Markl 1,2 , Pim van Ooij 1 , Susanne Schnell 1 , Jeremy Collins 1 , S. Chris Malaisrie 3 , James Carr 1 , and Alex J. Barker 1

1 Radiology, Northwestern University, Chicago, Illinois, United States, 2 Biomedical Engineering, Northwestern University, Illinois, United States, 3 Division of Cardiac Surgery, Northwestern University, Chicago, Illinois, United States

Patients with aortic dilation often exhibit eccentric transvalvular flow jets. The angle of the flow jet from the aorta centerline (FJA)has been reported as a risk factor for aortic dilation in bicuspid aortic valve patients. The objective of this study was to develop and apply a new algorithm for the semiautomatic evaluation of FJA using a 3D jet shear layer structure based on 4D flow MRI data.

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