Effects of Wall Motion and Compliance on Flow Patterns in the Ascending Aorta

• DOI: 10.1115/1.1574332
• Publication Date: 2003-06-13T13:59:39Z
• Authors: Suo Jin; John Oshinski; Don P. Giddens
• Keywords: Adult; Male; Movement; Models, Cardiovascular; Magnetic Resonance Imaging; Elasticity; 03 medical and health sciences; 0302 clinical medicine; Humans; Computer Simulation; Shear Strength; Aorta; Blood Flow Velocity

Helical flows have been observed in the ascending aorta vivo, and geometric curvature has suggested to be a major contributing factor. We employed magnetic resonance imaging (MRI) velocity mapping develop computational model examine effects of also wall compliance movement upon flow patterns. In model, MRI-derived geometry velocities were imposed as boundary conditions, which included both radial expansion-contraction translational motion wall. The computed results agreement with MR data only when full was suggesting that patterns arise not from arch but resulting its attachment beating heart.