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Prediction of rupture risk in cerebral aneurysms by comparing clinical cases with fluid-structure interaction analyses

Authors
 Kwang-Chun Cho  ;  Hyeondong Yang  ;  Jung-Jae Kim  ;  Je Hoon Oh  ;  Yong Bae Kim 
Citation
 SCIENTIFIC REPORTS, Vol.10(1) : 18237, 2020-10 
Journal Title
 SCIENTIFIC REPORTS 
Issue Date
2020-10
Abstract
Cerebral aneurysms should be treated on the basis of accurate rupture risk prediction. Nowadays, the rupture risk in aneurysms has been estimated using hemodynamic parameters. In this paper, we suggest a new way to predict the rupture risks in cerebral aneurysms by using fluid-structure interaction (FSI) analysis for better decision-making regarding treatment. A patient-specific model was constructed using digital subtraction angiography of 51 cerebral aneurysms. For each model, a thin-walled area (TWA) was first predicted using computational fluid dynamics (CFD), and then the highest equivalent strain in the TWA was calculated with FSI by varying wall thicknesses and mechanical properties. A critical curve was made from 16 FSI results for each patient-specific model to estimate the rupture risk. On average, the equivalent strains of the ruptured aneurysms were higher than those of the unruptured aneurysms. Furthermore, the patterns of critical curves between unruptured and ruptured aneurysms were clearly distinguishable. From the rupture risk evaluation based on the cut-off value, 24 of the 27 unruptured aneurysms and 15 of the 24 ruptured aneurysms were matched with actual-clinical setting cases. The critical curve proposed in the present study could be an effective tool for the prediction of the rupture risk of aneurysm.
Files in This Item:
T202005954.pdf Download
DOI
10.1038/s41598-020-75362-5
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Yong Bae(김용배) ORCID logo https://orcid.org/0000-0003-2262-7157
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/181496
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