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Computational fluid dynamics analysis was performed to simulate realistic physiological conditions that reflect the<jats:italic>in vivo<\/jats:italic>cardiac hemodynamics, and comparison of wall shear stress (WSS) between Newtonian and non-Newtonian fluid models was performed. The pressure gradient (PSG) and flow velocities in the left coronary artery were measured and compared in the left coronary models with and without presence of plaques during cardiac cycle. Our results showed that the highest PSG was observed in stenotic regions caused by the plaques. Low flow velocity areas were found at postplaque locations in the left circumflex, LAD, and bifurcation. WSS at the stenotic locations was similar between the non-Newtonian and Newtonian models although some more details were observed with non-Newtonian model. There is a direct correlation between coronary plaques and subsequent hemodynamic changes, based on the simulation of plaques in the realistic coronary models.<\/jats:p>","DOI":"10.1155\/2012\/504367","type":"journal-article","created":{"date-parts":[[2012,2,12]],"date-time":"2012-02-12T16:01:20Z","timestamp":1329062480000},"page":"1-9","source":"Crossref","is-referenced-by-count":75,"title":["Computational Fluid Dynamics Analysis of the Effect of Plaques in the Left Coronary Artery"],"prefix":"10.1155","volume":"2012","author":[{"given":"Thanapong","family":"Chaichana","sequence":"first","affiliation":[{"name":"Discipline of Medical Imaging, Department of Imaging and Applied Physics, Curtin University, GPO Box, U1987, Perth, WA 6845, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7538-4761","authenticated-orcid":true,"given":"Zhonghua","family":"Sun","sequence":"additional","affiliation":[{"name":"Discipline of Medical 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