Refinements in mathematical models to predict aneurysm growth and rupture.

摘要: The growth of aneurysms and eventually their likelihood rupture depend on the determination stress strain within aneurysm wall exact reproduction its geometry. A numerical model is developed to analyze pulsatile flow in abdominal aortic (AAA) models using real physiological resting exercise waveforms. Both laminar turbulent flows are considered. Interesting features field resulting from realistic waveforms obtained for various parameters finite element methods. Such include Reynolds number, size (D/d), flexibility wall. effect non-Newtonian behavior blood hemodynamic stresses compared with Newtonian behavior, effects demonstrated be significant situations. Our results show that maximum fluid shear occurs at distal end AAA model. Furthermore, turbulence found have a pressure distribution along both Related experimental work which bench top also discussed. provides platform validate This part our ongoing development patient-specific tool guide clinician decision making elucidate contribution flow-induced eventual rupture. These studies indicate accurately modeling physiologic paramount achieving goal.