Abstract #2716
Volumetric Quantification of Localized Normalized Helicity in Patients with Bicuspid Valve and Aortic Dilation
Julio Garcia 1 , Michael Markl 1 , Jeremy Collins 1 , James Carr 1 , and Alex J Barker 1
1
Radiology, Northwestern University, Chicago,
Illinois, United States
Elevated helical flow in the thoracic aorta may result
from hemodynamic and anatomic alterations and valve
phenotype. Helical flow is often qualitatively estimated
by visual methods. A quantitative approach to assess the
degree of helicity can be achieved by the computation of
localized normalized helicity (LNH). This study aimed to
use the full volume of the 4D flow measured velocity
fields to demonstrate that LNH quantification may
differentiate helical flow alterations in the aorta
between healthy controls and BAV subjects and the
correlation of elevated LNH with BAV aortic dilation.
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