Title :
Mechanical wall stresses on three-dimensionally reconstructed models of abdominal aortic aneurysm
Author :
Raghavan, M.L. ; Vorp, D.A. ; Federle, M.P. ; Makaroun, M.S. ; Webster, M.W.
Author_Institution :
Dept. of Surg., Pittsburgh Univ., PA, USA
Abstract :
We developed a methodology to estimate in-vivo wall stress distribution for abdominal aortic aneurysm (AAA) on a patient-to-patient basis. Computed tomography scans were used to three-dimensionally reconstruct the in-situ geometry of intact AAA. The 3D models of 6 AAA and 1 non-aneurysmal control aorta were meshed with hyperelastic, quadrilateral shell elements with constant wall thickness, and the finite element method was used to compute wall stress distribution under systolic blood pressure
Keywords :
biomedical measurement; blood vessels; computerised tomography; image reconstruction; internal stresses; medical image processing; mesh generation; physiological models; stress measurement; 3D reconstructed models; abdominal aortic aneurysm; computed tomography scans; constant wall thickness; finite element method; hyperelastic quadrilateral shell elements; in-situ geometry; in-vivo wall stress distribution; mechanical wall stresses; systolic blood pressure; Abdomen; Aneurysm; Blood pressure; Computational geometry; Computed tomography; Distributed computing; Finite element methods; Pressure control; Stress control; Thickness control;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802259
