Comparative Study of Aortic Wall Stress According to Geometric Parameters in Abdominal Aortic Aneurysms
| Autor: | Dong-Man Ryu, Ji-Hun You, Chung Won Lee, Up Huh, Chi-Seung Lee |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
peak wall stress 0206 medical engineering various geometry 02 engineering and technology macromolecular substances finite element analysis 030204 cardiovascular system & hematology lcsh:Technology Stress (mechanics) lcsh:Chemistry 03 medical and health sciences 0302 clinical medicine Aneurysm medicine.artery medicine General Materials Science cardiovascular diseases Aortic rupture Instrumentation lcsh:QH301-705.5 Fluid Flow and Transfer Processes Aorta abdominal aortic aneurysms business.industry lcsh:T Process Chemistry and Technology Abdominal aorta General Engineering Biaxial tensile test medicine.disease 020601 biomedical engineering Abdominal aortic aneurysm lcsh:QC1-999 Computer Science Applications Aortic wall enzymes and coenzymes (carbohydrates) lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 cardiovascular system Nuclear medicine business lcsh:Engineering (General). Civil engineering (General) lcsh:Physics |
| Zdroj: | Applied Sciences Volume 11 Issue 7 Applied Sciences, Vol 11, Iss 3195, p 3195 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11073195 |
| Popis: | In abdominal aortic aneurysm (AAA), the rupture of the aortic tissue is directly related to wall stress. Thus, the investigation of maximum wall stress is a necessary procedure to predict the aortic rupture in AAA. In this study, computational simulations were performed to investigate the correlation between peak wall stress (PWS) and AAA geometry. The Holzapfel model and various orientations of the collagen fibers and thicknesses of the layers of the aorta were employed in the simulation. The material constants used in the Holzapfel model were estimated from the examination and analysis of the biaxial tensile test results of the normal abdominal aorta and AAA. The aneurysm diameter, height, neck angle, and iliac angle were selected as geometric factors affecting the AAA rupture. In addition, a simulation scenario was conceived and created based on the measurement results using the computed tomography data of patients with AAA. Accordingly, the correlation between the PWS and AAA geometry was estimated. |
| Databáze: | OpenAIRE |
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