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논문 기본 정보

자료유형
학술저널
저자정보
Lee, Ui Yun (Department of Bionanosystem Engineering, Chonbuk National University) Jung, Jinmu (Division of Mechanical Design Engineering, Chonbuk National University) Kwak, Hyo Sung (Department of Radiology, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital) Lee, Dong Hwan (Division of Mechanical Design Engineering, Chonbuk National University) Chung, Gyung Ho (Department of Radiology, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital) Park, Jung Soo (Department of Neurosurgery, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital) Koh, Eun Jeong (Department of Neurosurgery, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital)
저널정보
대한신경외과학회 대한신경외과학회지 대한신경외과학회지 제61권 제6호
발행연도
2018.1
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689 - 699 (11page)

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Objective : The goal of this study was to compare several parameters, including wall shear stress (WSS) and flow pattern, between unruptured and ruptured anterior communicating artery (ACoA) aneurysms using patient-specific aneurysm geometry. Methods : In total, 18 unruptured and 24 ruptured aneurysms were analyzed using computational fluid dynamics (CFD) models. Minimal, average, and maximal wall shear stress were calculated based on CFD simulations. Aneurysm height, ostium diameter, aspect ratio, and area of aneurysm were measured. Aneurysms were classified according to flow complexity (simple or complex) and inflow jet (concentrated or diffused). Statistical analyses were performed to ascertain differences between the aneurysm groups. Results : Average wall shear stress of the ruptured group was greater than that of the unruptured group (9.42% for aneurysm and 10.38% for ostium). The average area of ruptured aneurysms was 31.22% larger than unruptured aneurysms. Simple flow was observed in 14 of 18 (78%) unruptured aneurysms, while all ruptured aneurysms had complex flow (p<0.001). Ruptured aneurysms were more likely to have a concentrated inflow jet (63%), while unruptured aneurysms predominantly had a diffused inflow jet (83%, p=0.004). Conclusion : Ruptured aneurysms tended to have a larger geometric size and greater WSS compared to unruptured aneurysms, but the difference was not statistically significant. Flow complexity and inflow jet were significantly different between unruptured and ruptured ACoA aneurysms.
#Aneurysm #Anterior communicating artery aneurysm #Computational fluid dynamics #Wall shear stress #Flow pattern

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참고문헌 (31)

참고문헌 신청
Castro MA / 2006 / Patient-specific computational fluid dynamics modeling of anterior communicating artery aneurysms: a study of the sensitivity of intra-aneurysmal flow patterns to flow conditions in the carotid arteries / AJNR Am J Neuroradiol 27:2061~2068 google schola Castro MA / 2009 / Hemodynamic patterns of anterior communicating artery aneurysms: a possible association with rupture / AJNR Am J Neuroradiol 30:297~302 google schola Cebral JR / 2005 / Characterization of cerebral aneurysms for assessing risk of rupture by using patient-specific computational hemodynamics models / AJNR Am J Neuroradiol 26:2550~2559 google schola Cebral JR / 2011 / Association of hemodynamic characteristics and cerebral aneurysm rupture / AJNR Am J Neuroradiol 32:264~270 google schola Chien A / 2008 / Patientspecific flow analysis of brain aneurysms at a single location: comparison of hemodynamic characteristics in small aneurysms / Med Biol Eng Comput 46:1113~1120 google schola

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