Abstract
Cerebral aneurysm formation is the result of a complex interplay of systemic and local factors. Among the latter, the role of the geometry of the vessel hosting an aneurysm, of the upstream vasculature and the induced hemodynamics still need to be carefully investigated. In this paper we combine computational fluid dynamics analysis and morphological characterization and carry out the statistical investigation of the features of the internal carotid artery (ICA) of 52 patients affected by a cerebral aneurysm. The functional principal component analysis performed on the geometric and fluid dynamics features of the patients reveals correlations with the location of the aneurysm in the cerebral circulation and its rupture status. This allows a clustering of the patients that is anticipated to contribute to the design of an index for the rupture risk. In particular, ICA featuring a pronounced WSS peak are statistically inclined to hosting ruptured aneurysms. Moreover, our statistical results suggest that patients with a double-bend siphons (S-class) are less prone to the development of cerebral aneurysms.
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Acknowledgments
Laura Sangalli is partially supported by the Italian MIUR FIRB research project “Advanced statistical and numerical methods for the analysis of high dimensional functional data in life sciences and engineering”. Marina Piccinelli, Tiziano Passerini and Alessandro Veneziani acknowledge the support of the Brain Aneurysm Foundation. All the participants acknowledge the support of the Italian Fondazione Politecnico di Milano and the SIEMENS Medical Solutions, Italy for the support to the Aneurisk project (Partners of Aneurisk: MOX—Department of Mathematics, Politecnico di Milano (PI institution), M. Negri Institute, Bergamo, Department of Neurosurgery, Niguarda Ca’Granda Hospital, Milan, Department of Neurosciences, University of Milan, LABS—Department of Civil Engineering, Politecnico di Milano). Alessandro Veneziani wishes to thank Dr. Frank Tong (Emory Hospital) for fruitful discussions. Susanna Bacigaluppi dedicates her contribution to this work to the memory of Dr. M. Collice.
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All the authors of the present paper declare that they do not have any conflict of interest with the results of the research presented here.
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Communicated by Yi-Ren Woo.
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Passerini, T., Sangalli, L.M., Vantini, S. et al. An Integrated Statistical Investigation of Internal Carotid Arteries of Patients Affected by Cerebral Aneurysms. Cardiovasc Eng Tech 3, 26–40 (2012). https://doi.org/10.1007/s13239-011-0079-x
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DOI: https://doi.org/10.1007/s13239-011-0079-x
Keywords
- Cerebral aneurysms
- Image processing
- Computational fluid dynamics
- Functional principal component analysis