Influence of Parent Artery Segmentation and Boundary Conditions on Hemodynamic Characteristics of Intracranial Aneurysms
- Title
- Influence of Parent Artery Segmentation and Boundary Conditions on Hemodynamic Characteristics of Intracranial Aneurysms
- Author
- 오제훈
- Keywords
- Intracranial aneurysms; hemodynamic factors; parent artery segmentation; boundary conditions; computational fluid dynamics; COMPUTATIONAL FLUID-DYNAMICS; WALL SHEAR-STRESS; CEREBRAL ANEURYSMS; FLOW DYNAMICS; RISK-FACTORS; BLOOD-FLOW; RUPTURE; MODEL; SENSITIVITY; SIMULATION
- Issue Date
- 2015-09
- Publisher
- YONSEI UNIV COLL MEDICINE
- Citation
- YONSEI MEDICAL JOURNAL, v. 56, No. 5, Page. 1328-1337
- Abstract
- Purpose: The purpose of this study is to explore the influence of segmentation of the upstream and downstream parent artery and hemodynamic boundary conditions (BCs) on the evaluated hemodynamic factors for the computational fluid dynamics (CFD) analysis of intracranial aneurysms. Materials and Methods: Three dimensional-patient-specific aneurysm models were analyzed by applying various combinations of inlet and outlet BCs. Hemodynamic factors such as velocity pattern, streamline, wall shear stress, and oscillatory shear index at the systolic time were visualized and compared among the different cases. Results: Hemodynamic factors were significantly affected by the inlet BCs while there was little influence of the outlet BCs. When the inlet length was relatively short, different inlet BCs showed different hemodynamic factors and the calculated hemodynamic factors were also dependent on the inlet length. However, when the inlet length (L) was long enough (L˃20D, where D is the diameter of inlet section), the hemodynamic factors became similar regardless of the inlet BCs and lengths. The error due to different inlet BCs was negligible. The effect of the outlet length on the hemodynamic factors was similar to that of the inlet length. Conclusion: Simulated hemodynamic factors are highly sensitive to inlet BCs and upstream parent artery segmentation. The results of this work can provide an insight into how to build models and to apply BCs for more accurate estimation of hemodynamic factors from CFD simulations of intracranial aneurysms.
- URI
- https://synapse.koreamed.org/DOIx.php?id=10.3349/ymj.2015.56.5.1328https://repository.hanyang.ac.kr/handle/20.500.11754/101532
- ISSN
- 0513-5796; 1976-2437
- DOI
- 10.3349/ymj.2015.56.5.1328
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML