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This article aimed to improve the accuracy of BCs in computational fluid dynamics (CFD) simulation and analyze the differences in hemodynamics between healthy volunteers and patients with visceral arterial stenosis (VAS). The geometric models of seven cases were reconstructed using the magnetic resonance angiogram (MRA) or computed tomography angiogram (CTA) imaging data. The physiological flow waveforms obtained from 2D Phase Contrast Magnetic Resonance Imaging (PCMRI) were imposed on the aortic inlet and the visceral arteries' outlets. The individualized RCR values of the three\u2010element Windkessel model were imposed on the aortic outlet. CFD simulations were run in the open\u2010source software: svSolver. Two specific time points were selected to compare the hemodynamics of healthy volunteers and patients with VAS. The results suggested that blood in the stenotic visceral arteries flowed at high speed throughout the cardiac cycle. The low pressure is distributed at stenotic lesions. The wall shear stress (WSS) reached 4\u00a0Pa near stenotic locations. The low time average wall shear stress (TAWSS), high oscillatory shear index (OSI), and high relative residence time (RRT) concentrated in the abdominal aorta. Besides, the ratios of the areas with low TAWSS, high OSI, and high RRT to the computational domain were higher in patients with VAS than which in the healthy volunteers. The individualized BCs were used for hemodynamic simulations and results suggest that patients with stenosis have a higher risk of blood retention and atherosclerosis formation in the abdominal aorta.<\/jats:p>","DOI":"10.1002\/cnm.3569","type":"journal-article","created":{"date-parts":[[2021,12,30]],"date-time":"2021-12-30T08:59:20Z","timestamp":1640854760000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Numerical simulation in the abdominal aorta and the visceral arteries with or without stenosis based on <scp>2D PCMRI<\/scp>"],"prefix":"10.1002","volume":"38","author":[{"given":"Chen","family":"Peng","sequence":"first","affiliation":[{"name":"Department of Aeronautics and Astronautics, Institute of Biomechanics Fudan University  Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junzhen","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Radiology, Zhongshan Hospital Fudan University  Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"He","sequence":"additional","affiliation":[{"name":"Department of Vascular Surgery, Zhongshan Hospital Fudan University  Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wang","family":"Qin","sequence":"additional","affiliation":[{"name":"Department of Aeronautics and Astronautics, Institute of Biomechanics Fudan University  Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tong","family":"Yuan","sequence":"additional","affiliation":[{"name":"Department of Vascular Surgery, Zhongshan Hospital Fudan University  Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuanqing","family":"Kan","sequence":"additional","affiliation":[{"name":"Department of Vascular Surgery, Zhongshan Hospital Fudan University  Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Keqiang","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute of Panvascular Medicine, Zhongshan Hospital Fudan University  Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2364-3896","authenticated-orcid":false,"given":"Shengzhang","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Aeronautics and Astronautics, Institute of Biomechanics Fudan University  Shanghai China"},{"name":"Institute of Biomedical Engineering Technology, Academy for Engineering and Technology Fudan University  Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yun","family":"Shi","sequence":"additional","affiliation":[{"name":"Department of Vascular Surgery, Zhongshan Hospital Fudan University  Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,1,18]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(00)03645-X"},{"issue":"10","key":"e_1_2_8_3_1","first-page":"1018","article-title":"Hemodynamics and atherosclerosis. 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