Multilevel and multifidelity uncertainty quantification for cardiovascular hemodynamics [0.03%]
心血管血流动力学的多级和多保真度不确定性量化
Casey M Fleeter,Gianluca Geraci,Daniele E Schiavazzi et al.
Casey M Fleeter et al.
Standard approaches for uncertainty quantification in cardiovascular modeling pose challenges due to the large number of uncertain inputs and the significant computational cost of realistic three-dimensional simulations. We propose an effic...
Farshad Navah,Marta de la Llave Plata,Vincent Couaillier
Farshad Navah
This article presents a formulation that extends the multiscale modelling for compressible large-eddy simulation to a vast family of compact nodal numerical methods represented by the high-order flux reconstruction scheme. The theoretical a...
A Mesh-Free Approach to Incorporate Complex Anisotropic and Heterogeneous Material Properties into Eye-Specific Finite Element Models [0.03%]
一种无网格方法,用于将复杂的各向异性及非均匀材料属性结合到眼特异的有限元模型中
Rafael Grytz,Kapil Krishnan,Ryan Whitley et al.
Rafael Grytz et al.
Commercial finite element modeling packages do not have the tools necessary to effectively incorporate the complex anisotropic and heterogeneous material properties typical of the biological tissues of the eye. We propose a mesh-free approa...
A data-driven framework for sparsity-enhanced surrogates with arbitrary mutually dependent randomness [0.03%]
一种用于任意互相关随机变量的稀疏增强代理的数据驱动框架
Huan Lei,Jing Li,Peiyuan Gao et al.
Huan Lei et al.
The challenge of quantifying uncertainty propagation in real-world systems is rooted in the high-dimensionality of the stochastic input and the frequent lack of explicit knowledge of its probability distribution. Traditional approaches show...
Coupling brain-tumor biophysical models and diffeomorphic image registration [0.03%]
结合生物物理模型和微分同胚图像配准技术建模脑肿瘤演变过程
Klaudius Scheufele,Andreas Mang,Amir Gholami et al.
Klaudius Scheufele et al.
We present SIBIA (Scalable Integrated Biophysics-based Image Analysis), a framework for joint image registration and biophysical inversion and we apply it to analyze MR images of glioblastomas (primary brain tumors). We have two application...
Numerical aspects of anisotropic failure in soft biological tissues favor energy-based criteria: A rate-dependent anisotropic crack phase-field model [0.03%]
各向异性失效的数值方面倾向于基于能量的标准:一种依赖于速率的各向异性裂纹相场模型
Osman Gültekin,Hüsnü Dal,Gerhard A Holzapfel
Osman Gültekin
A deeper understanding to predict fracture in soft biological tissues is of crucial importance to better guide and improve medical monitoring, planning of surgical interventions and risk assessment of diseases such as aortic dissection, ane...
A phase-field approach to model fracture of arterial walls: Theory and finite element analysis [0.03%]
动脉壁断裂的相场模型:理论与有限元分析
Osman Gültekin,Hüsnü Dal,Gerhard A Holzapfel
Osman Gültekin
This study uses a recently developed phase-field approach to model fracture of arterial walls with an emphasis on aortic tissues. We start by deriving the regularized crack surface to overcome complexities inherent in sharp crack discontinu...
Uncertainty quantification of simulated biomechanical stimuli in coronary artery bypass grafts [0.03%]
冠状动脉旁路移植术中模拟的生物力学刺激不确定量化评估
Justin S Tran,Daniele E Schiavazzi,Andrew M Kahn et al.
Justin S Tran et al.
Coronary artery bypass graft surgery (CABG) is performed on more than 400,000 patients annually in the U.S. However, saphenous vein grafts (SVGs) implanted during CABG exhibit poor patency compared to arterial grafts, with failure rates up ...
Estimation of in vivo constitutive parameters of the aortic wall using a machine learning approach [0.03%]
基于机器学习方法估计主动脉壁在体固有参数
Minliang Liu,Liang Liang,Wei Sun
Minliang Liu
The patient-specific biomechanical analysis of the aorta requires the quantification of the in vivo mechanical properties of individual patients. Current inverse approaches have attempted to estimate the nonlinear, anisotropic material para...
Correction function for accuracy improvement of the Composite Smeared Finite Element for diffusive transport in biological tissue systems [0.03%]
改进生物组织系统扩散传输的复合弥散有限元精度的矫正函数
M Milosevic,V Simic,B Milicevic et al.
M Milosevic et al.
Modeling of drug transport within capillaries and tissue remains a challenge, especially in tumors and cancers where the capillary network exhibits extremely irregular geometry. Recently introduced Composite Smeared Finite Element (CSFE) pr...