Takizawa, KenjiTorii, RyoTakagi, HirokazuTezduyar, Tayfun E.Xu, Xiao Y.2014-08-012014-08-012014Takizawa, Kenji, Torii, Ryo, Takagi, Hirokazu, et al.. "Coronary arterial dynamics computation with medical-image-based time-dependent anatomical models and element-based zero-stress state estimates." <i>Computational Mechanics,</i> (2014) Springer: http://dx.doi.org/10.1007/s00466-014-1049-6.https://hdl.handle.net/1911/76322We propose a method for coronary arterial dynamics computation with medical-image-based time-dependent anatomical models. The objective is to improve the computational analysis of coronary arteries for better understanding of the links between the atherosclerosis development and mechanical stimuli such as endothelial wall shear stress and structural stress in the arterial wall. The method has two components. The first one is element-based zero-stress (ZS) state estimation, which is an alternative to prestress calculation. The second one is a “mixed ZS state” approach, where the ZS states for different elements in the structural mechanics mesh are estimated with reference configurations based on medical images coming from different instants within the cardiac cycle. We demonstrate the robustness of the method in a patient-specific coronary arterial dynamics computation where the motion of a thin strip along the arterial surface and two cut surfaces at the arterial ends is specified to match the motion extracted from the medical images.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlecoronary arterial dynamicstime-dependent anatomical modelmedical-image-based datacoronary atherosclerosiselement-based zero-stress state estimatemixed zero-stress statehttp://dx.doi.org/10.1007/s00466-014-1049-6