Three-Dimensional Computational Model of Left Heart Diastolic Function With Fluid–Structure Interaction

[+] Author and Article Information
Jack D. Lemmon, Ajit P. Yoganathan

Schools of Mechanical and Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332

J Biomech Eng 122(2), 109-117 (Oct 31, 1999) (9 pages) doi:10.1115/1.429648 History: Received August 03, 1998; Revised October 31, 1999
Copyright © 2000 by ASME
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Schematic of: (a) left heart model showing chamber fiber architecture and pulmonary inflow to the atrium, and (b) left atrial geometry
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(a) Schematic for modeling of pulmonary venous flow into the atrium, and (b) the input function for pressure at the boundary
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Input functions for: (a) fiber resting length, and (b) fiber stiffness versus time for left heart normal case
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Transmitral velocity profile for normal diastolic function case
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Pressure traces in the ventricle and atrium for the normal diastolic
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Inflow velocity as a function of space and time for normal case
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Velocity fields for the left heart model at: (a) 40 ms, (b) 60 ms, (c) 100 ms, (d) 180 ms, (e) 280 ms, and (f ) 320 ms. Color-coded scalar field is either the pressure or w velocity (main inflow velocity) component.
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Pulmonary venous flow into the atrium during: (a) early filling (100 ms), and (b) atrial contraction (340 ms)




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