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Published on: June 3, 2021
The Current Limitations and Advanced Analysis of Hemodynamic Study of Cerebral Aneurysms
1Department of Neurosurgery, Yongin Severance Hospital, Yongin, Korea.
Insights
Computational fluid dynamics (CFD) analysis aids cerebrovascular disease research, but its limitations regarding wall shear stress (WSS) in cerebral aneurysms require new methods.
Area of Science:
- Neurology
- Biomedical Engineering
- Medical Imaging
Background:
- Cerebrovascular diseases are a significant health concern.
- Hemodynamic analysis offers valuable insights into these conditions.
- Computational fluid dynamics (CFD) is a key method for hemodynamic analysis.
Purpose of the Study:
- To review current findings and limitations of CFD analysis in cerebrovascular disease research.
- To highlight the controversy surrounding wall shear stress (WSS) in cerebral aneurysm development and progression.
- To advocate for the development of novel hemodynamic analysis techniques.
Main Methods:
- Review of existing literature on CFD analysis in cerebrovascular diseases.
- Focus on studies investigating cerebral aneurysms.
- Analysis of the role of wall shear stress (WSS) as a hemodynamic parameter.
Main Results:
- CFD analysis has provided significant data on hemodynamics in cerebrovascular diseases, particularly cerebral aneurysms.
- The precise role of high wall shear stress (WSS) in the formation, growth, and rupture of cerebral aneurysms remains debated.
- Limitations inherent in current CFD methods hinder definitive conclusions regarding WSS.
Conclusions:
- While CFD analysis is instrumental, its limitations necessitate caution in interpreting WSS-related findings for cerebral aneurysms.
- Further research is required to overcome existing methodological constraints.
- The development of advanced hemodynamic analysis methods is crucial for a comprehensive understanding of cerebrovascular diseases.
Abstract:
Among the various perspectives on cerebrovascular diseases, hemodynamic analysis-which has recently garnered interest-is of great help in understanding cerebrovascular diseases. Computational fluid dynamics (CFD) analysis has been the primary hemodynamic analysis method, and studies on cerebral aneurysms have been actively conducted. However, owing to the intrinsic limitations of the analysis method, the role of wall shear stress (WSS), the most representative parameter, remains controversial. High WSS affects the formation of cerebral aneurysms; however, no consensus has been reached on the role of WSS in the growth and rupture of cerebral aneurysms. Therefore, this review aimed to briefly introduce the up-to-date results and limitations made through CFD analysis and to inform the need for a new hemodynamic analysis method.
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