A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Filters
A Finite Element CFD Simulation for Predicting Patient-Specific Hemodynamics of an Aortic Coarctation
[chapter]
2014
Lecture Notes in Computer Science
Preserved Fulltext
This paper presents a numerical simulation of the flow characteristics through a patient-specific model of an aortic coarctation. ...
The purpose of the study was to predict the pressure gradient at rest and at exercise conditions. ...
In the present manuscript, a computational fluid dynamics (CFD) simulation of the CoA hemodynamics is presented using the finite-element commercial software ADINA (ADINA R&D, Inc., MA). ...
doi:10.1007/978-3-642-54268-8_13
fatcat:d3emwn7vj5cunfaeqadcuhe32i
A reduced-order model based on the coupled 1D-3D finite element simulations for an efficient analysis of hemodynamics problems
2014
Computational Mechanics
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
First a coupled 1D-3D Finite Element Simulation is performed and the results are used to adjust a reduced-order model of the 3D patient-specific area of interest. ...
The methodology proposed is validated using a patient-specific aortic coarctation model under rest and non-rest conditions ...
We also thank Dr.Pooyan Dadvand for his support on the implementation of the reduced-order model in KRATOS and Mr.Maurizio Bordone for his help during the fitting of the terminal resistances during training ...
doi:10.1007/s00466-014-1040-2
fatcat:slvwr4ntmfbydjau7jcnwx4d5u
In Vivo Validation of Numerical Prediction for Turbulence Intensity in an Aortic Coarctation
2011
Annals of Biomedical Engineering
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Magnetic resonance imaging (MRI) was carried out on a 60-year-old female with a restenosed aortic coarctation. ...
Results indicate relative agreement (error %10%) between the in vivo measurements and the CFD predictions of TKE. ...
the Center for Industrial Information Technology. ...
doi:10.1007/s10439-011-0447-6
pmid:22016327
pmcid:PMC3880395
fatcat:hp4a4ubsczaozdoioe43xeo73m
Assessment of hemodynamic responses to exercise in aortic coarctation using MRI-ergometry in combination with computational fluid dynamics
2020
Scientific Reports
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
This concept has the potential to serve as an alternative to cardiac catheterization with pharmacological stress testing and provides hemodynamic information valuable for studying the pathophysiology of ...
aortic coarctation. ...
J.B. contributed to segmentation of aortic geometry and numerical simulations. C.S., J.B. and ...
doi:10.1038/s41598-020-75689-z
pmid:33144605
fatcat:gyvk42tjx5cbngav2cmovtbuzi
Quantification of Local Hemodynamic Alterations Caused by Virtual Implantation of Three Commercially Available Stents for the Treatment of Aortic Coarctation
2013
Pediatric Cardiology
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
We created the first patient-specific computational fluid dynamics (CFD) model of a CoA patient treated by Palmaz stenting to date, and compared resulting WSS distributions to those from virtual implantation ...
Patients with coarctation of the aorta (CoA) are prone to morbidity including atherosclerotic plaque that has been shown to correlate with altered wall shear stress (WSS) in the descending thoracic aorta ...
Simulations incorporating aortic deformation [6, 17] , downstream vascular resistance and compliance [32, 31] were performed using a novel stabilized finite element method to solve the conservation ...
doi:10.1007/s00246-013-0845-7
pmid:24259013
pmcid:PMC3959287
fatcat:nzb4hq4voffzvbep5beskefa5y
Computational modeling and engineering in pediatric and congenital heart disease
2015
Current opinion in pediatrics
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Recent Findings-Multiscale modeling combining patient specific hemodynamics with reduced order (i.e. mathematically and computationally simplified) circulatory models has become the defacto standard for ...
Purpose of review-Recent methodological advances in computational simulations are enabling increasingly realistic simulations of hemodynamics and physiology, driving increased clinical utility. ...
ACKNOWLEDGEMENTS This work was supported by the Leducq Foundation as part of a Transatlantic Network of Excellence for Cardiovascular Research, a Burroughs Wellcome Fund Career award at the Scientific ...
doi:10.1097/mop.0000000000000269
pmid:26262579
pmcid:PMC4666705
fatcat:yrvwdzyqtjbfno4gg4uxhffcta
Effects of Uncertainty of Outlet Boundary Conditions in a Patient-Specific Case of Aortic Coarctation
2021
Annals of Biomedical Engineering
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
We evaluated the effect of using three-element Windkessel models as the outflow boundary conditions of a patient-specific aortic coarctation model. ...
Physiologically suitable boundary conditions at the inlet and outlet of the computational domain are needed to perform a patient-specific CFD analysis. ...
Kim et al. introduced a method to strongly couple a lumped parameter heart model to a 3D finite element model of the aorta with CoA. 16 Itu et al. proposed a CFD-based approach for non-invasive hemodynamic ...
doi:10.1007/s10439-021-02841-9
pmid:34431017
pmcid:PMC8671284
fatcat:tomkj4ciqzburijqndz6d3gfaa
Noninvasive hemodynamic assessment, treatment outcome prediction and follow-up of aortic coarctation from MR imaging
2015
Medical Physics (Lancaster)
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2016; you can also visit the original URL.
The file type is application/pdf.
dynamics (CFD) to estimate the pre-and postoperative hemodynamics for coarctation patients. ...
Purpose: Coarctation of the aorta (CoA) is a congenital heart disease characterized by an abnormal narrowing of the proximal descending aorta. ...
We use a finite difference solver with patient-specific fixed time step and explicit stability constraints. 23 In all of our computations, we apply a Newtonian rheological model, where the blood density ...
doi:10.1118/1.4914856
pmid:25979009
fatcat:f5bj3xgxejh7thvmyec6xcpvci
In silico modeling for personalized stenting in aortic coarctation
[article]
2022
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
Stent intervention is a recommended therapy to reduce the pressure gradient and restore blood flow for patients with coarctation of the aorta (CoA). ...
In this work, we developed a framework for personalized stent intervention in CoA using in silico modeling, combining computational fluid dynamics (CFD) and image-based prediction of the geometry of the ...
in the pre-interventional geometry of an aorta of a patient with CoA simulated by CFD. ...
arXiv:2205.04518v1
fatcat:2zbso7kamnaprnjmmsifg765qq
Patient-specific modeling of left ventricular electromechanics as a driver for haemodynamic analysis
2016
Europace
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Methods and results-EM models of the LV and aortic root were created for four pediatric patients treated for either aortic coarctation or aortic valve disease. ...
We report our recent advancements in developing an automated workflow for the creation of such CFD ready kinematic models to serve as drivers of blood flow simulations. ...
Acknowledgements This research was supported by the grant F3210-N18 from the Austrian Science Fund (FWF) within the SFB Mathematical Optimization and Applications in Biomedical Sciences and is part of ...
doi:10.1093/europace/euw369
pmid:28011839
pmcid:PMC5386137
fatcat:rnzctif33bgtxfr6ofnf2qqbfq
Computational Simulations Demonstrate Altered Wall Shear Stress in Aortic Coarctation Patients Treated by Resection with End-to-end Anastomosis
2011
Congenital Heart Disease
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Computational fluid dynamics (CFD) models were created from imaging and blood pressure data for control subjects and age-and gendermatched CoA patients treated by RWEA (4 male, 2 female, 15±8 years). ...
These indices were quantified longitudinally and circumferentially in the dAo, and several visualization methods were used to highlight regions of potential hemodynamic susceptibility. ...
Sources of funding: This work was supported by a Dean's Postdoctoral Fellowship (to JFL), the Vera Moulton Wall Center for Pulmonary Vascular Disease at the Stanford University School of Medicine, and ...
doi:10.1111/j.1747-0803.2011.00553.x
pmid:21801315
pmcid:PMC3208403
fatcat:b5rhlb3fpzao3kspaxfcox2huu
Effects of pulmonary artery banding and retrograde aortic arch obstruction on the hybrid palliation of hypoplastic left heart syndrome
2013
Journal of Thoracic and Cardiovascular Surgery
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Methods: A computational modeling technique was used to couple a 3-dimensional geometry of the hybrid palliation with a hydraulic network of the entire circulation based on pre-stage 2 hemodynamics. ...
Conclusions: These computational simulations of the stage 1 hybrid palliation for hypoplastic left heart syndrome with aortic atresia suggest that small differences in the degree of branch pulmonary arterial ...
were developed with Gambit (ANSYS, Inc, Canonsburg, Pa) using approximately 160,000 4-node tetrahedral volumetric elements for each computational fluid dynamics (CFD) model, after conducting a mesh sensitivity ...
doi:10.1016/j.jtcvs.2013.01.038
pmid:23434295
fatcat:is6ni44jnng5bpmx6gy5hw6hzq
MRI-based computational hemodynamics in patients with aortic coarctation using the lattice Boltzmann methods: Clinical validation study
2016
Journal of Magnetic Resonance Imaging
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Purpose: To introduce a scheme based on a recent technique in computational hemodynamics, known as the lattice Boltzmann methods (LBM), to noninvasively measure pressure gradients in patients with a coarctation ...
Materials and Methods: Pre-and posttreatment LBM-based pressure gradients for 12 patients with CoA were simulated for the time point of peak systole using the open source library OpenLB. ...
a means for a computer-aided treatment planning and predicting possible hemodynamic alterations. ...
doi:10.1002/jmri.25366
pmid:27384018
pmcid:PMC5213689
fatcat:rwqo2xgg2zcfbdohsvnnili3mu
Towards a Computational Framework for Modeling the Impact of Aortic Coarctations Upon Left Ventricular Load
2018
Frontiers in Physiology
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Other Versions
A biophysically detailed finite element (FE) model of LV EM was coupled with a FE-based CFD solver for moving domains using an arbitrary Eulerian-Lagrangian (ALE) formulation. ...
Two clinical cases of patients suffering from aortic coarctations (CoA) were built and parameterized based on clinical data under pre-treatment conditions. ...
We acknowledge PRACE for awarding us access to resource ARCHER based in the UK at EPCC (grant CAMEL) and the Vienna Scientific Cluster VSC-3. ...
doi:10.3389/fphys.2018.00538
pmid:29892227
pmcid:PMC5985756
fatcat:mqsbm3lepbfophx2kuak3hvycq
Hodge Decomposition of the wall shear stress vector fields characterizing biological flows
[article]
2018
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Other Versions
Finally, a comparative analysis of 11 patients with coarctation of the aorta (CoA) before and after treatment as well as 10 controls patient was done. ...
A discrete boundary-sensitive Hodge decomposition is proposed as a central tool for the analysis of wall shear stress (WSS) vector fields in aortic blood flows. ...
Yevtushenko was responsible in acquiring the patient models, reconstructing the geometry, and doing the numerical simulations. K. Poelke, and K. ...
arXiv:1808.01998v3
fatcat:3ya2lll5wvahxejese77iekh2m
« Previous
Showing results 1 — 15 out of 73 results