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dc.contributor.author오제훈-
dc.date.accessioned2019-04-05T00:07:01Z-
dc.date.available2019-04-05T00:07:01Z-
dc.date.issued2015-09-
dc.identifier.citationYONSEI MEDICAL JOURNAL, v. 56, No. 5, Page. 1328-1337en_US
dc.identifier.issn0513-5796-
dc.identifier.issn1976-2437-
dc.identifier.urihttps://synapse.koreamed.org/DOIx.php?id=10.3349/ymj.2015.56.5.1328-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/101532-
dc.description.abstractPurpose: 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.en_US
dc.description.sponsorshipThis research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2013R1A1A2058710).en_US
dc.language.isoen_USen_US
dc.publisherYONSEI UNIV COLL MEDICINEen_US
dc.subjectIntracranial aneurysmsen_US
dc.subjecthemodynamic factorsen_US
dc.subjectparent artery segmentationen_US
dc.subjectboundary conditionsen_US
dc.subjectcomputational fluid dynamicsen_US
dc.subjectCOMPUTATIONAL FLUID-DYNAMICSen_US
dc.subjectWALL SHEAR-STRESSen_US
dc.subjectCEREBRAL ANEURYSMSen_US
dc.subjectFLOW DYNAMICSen_US
dc.subjectRISK-FACTORSen_US
dc.subjectBLOOD-FLOWen_US
dc.subjectRUPTUREen_US
dc.subjectMODELen_US
dc.subjectSENSITIVITYen_US
dc.subjectSIMULATIONen_US
dc.titleInfluence of Parent Artery Segmentation and Boundary Conditions on Hemodynamic Characteristics of Intracranial Aneurysmsen_US
dc.typeArticleen_US
dc.relation.no5-
dc.relation.volume56-
dc.identifier.doi10.3349/ymj.2015.56.5.1328-
dc.relation.page1328-1337-
dc.relation.journalYONSEI MEDICAL JOURNAL-
dc.contributor.googleauthorHua, Y-
dc.contributor.googleauthorOh, JH-
dc.contributor.googleauthorKim, YB-
dc.relation.code2015000736-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF ENGINEERING SCIENCES[E]-
dc.sector.departmentDEPARTMENT OF MECHANICAL ENGINEERING-
dc.identifier.pidjehoon-
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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