Key result
Aortic root tilt and rotation angles decrease during ejection to form a straight cylinder with low shear stress, and increase during diastole resulting in a tilted frustum with elevated shear stress.
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May guide biomechanical modeling of aortopathy; leaves open clinical relevance for surgical planning or risk stratification.
Berdajs et al. (2015) studied Aortic root morphology (n=5). Sonomicrometric crystal implantation and computed fluid dynamics modelling was evaluated on 3-dimensional geometrical changes of the aortic root and local shear stress profile. Aortic root tilt and rotation angles decrease during ejection to form a straight cylinder with low shear stress, and increase during diastole resulting in a tilted frustum with elevated shear stress.
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