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Abdominal aortic aneurysm (abdominal aortic aneurysm, AAA) is a the common arterial distensibility disease , the AAA partial rupture is the main cause of death . In Europe and the United States , abdominal aortic aneurysm become a threat to the elderly life killer . Each year in the United States , about 200,000 people are diagnosed with AAA, about 15,000 people die from AAA . More and more research evidence that hemodynamic factors play a key role in the occurrence and development process of the AAA , the size and distribution of AAA rupture of the aneurysm wall stress are closely related. When the blood flows between the fluid and solids will be strongly influence each other , the behavior of fluids and solids are tightly coupled together , so the hemodynamic and bio- mechanical study of abdominal aneurysm due to vascular elastic thin - walled structure, have to consider the fluid-structure interaction problems between the two . However, in previous studies , the aneurysm using the assumptions of the idealized model and rigid wall to analyze the blood flow of the aneurysm , a far cry from the results obtained with the real situation , can not effectively analyze the stress distribution of the wall . The subject according to the clinical abdominal aortic aneurysm obtained CT image segmentation and 3D reconstruction , in order to get real - AAA individual shape . And the use of the ANSYS family of software simulation of fluid-structure interaction analysis of abdominal aortic aneurysms , aneurysm blood flow velocity , pressure and aneurysm wall values ??of the stress distribution , and post-processing results , the use of visual means the distribution of blood flow , blood pressure distribution and the aneurysm wall stress distribution , in order to determine the danger zone easily broken , and provide the basis for the diagnosis and treatment of abdominal aortic aneurysms .
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