4.5 Article

Onset and nature of flow-induced vibrations in cerebral aneurysms via fluid-structure interaction simulations

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Biophysics

Spectral Bandedness in High-Fidelity Computational Fluid Dynamics Predicts Rupture Status in Intracranial Aneurysms

Daniel E. MacDonald et al.

Summary: Recent studies have found high-frequency flow instabilities in aneurysms consistent with clinical reports. This study introduces a novel method for quantifying and visualizing these instabilities in cardiovascular computational fluid dynamics (CFD) data. The results show that a spectral bandedness index (SBI) is significantly associated with rupture status and could potentially be used to identify aneurysms at lower risk of rupture.

JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME (2022)

Article Engineering, Mechanical

Flow-induced vibration of a cantilevered cylinder in oscillatory flow at high KC

Otto E. Neshamar et al.

Summary: In this study, flow-induced vibrations of a cantilevered circular cylinder were measured in sinusoidal, oscillatory water flows. The results show that the type and frequency of vibrations depend on the flow velocity and the flow half-period, and are related to the cylinder's natural frequency and the vortex shedding frequency.

JOURNAL OF FLUIDS AND STRUCTURES (2022)

Article Biophysics

High-fidelity fluid structure interaction simulations of turbulent-like aneurysm flows reveals high-frequency narrowband wall vibrations: A stimulus of mechanobiological relevance?

Alban Souche et al.

Summary: Recent high-fidelity computational fluid dynamics simulations indicate turbulent-like flows in intracranial aneurysm hemodynamics. This study explores the hypothesis that high-frequency pressure fluctuations promote aneurysm wall vibrations using fully coupled fluid-structure interaction simulations. The results show two-way coupling between pressure and wall deformation, supporting the idea that wall vibrations could be a widespread phenomenon in aneurysms. Additionally, the vibrations and stresses within the wall may play a role in vessel wall pathology.

JOURNAL OF BIOMECHANICS (2022)

Article Biophysics

Fluid-structure interaction (FSI) simulation for studying the impact of atherosclerosis on hemodynamics, arterial tissue remodeling, and initiation risk of intracranial aneurysms

Ali A. Rostam-Alilou et al.

Summary: In this study, the interaction between blood and vessel tissue due to atherosclerotic occlusions was investigated for the first time. The results showed that existing occlusions in the arteries can significantly change the hemodynamic behavior and increase the risk of arterial tissue remodeling and aneurysm formation.

BIOMECHANICS AND MODELING IN MECHANOBIOLOGY (2022)

Article Radiology, Nuclear Medicine & Medical Imaging

Identification of intra-individual variation in intracranial arterial flow by MRI and the effect on computed hemodynamic descriptors

Xinke Liu et al.

Summary: This study identified a 10% intra-individual mean flow variation on phase-contrast MR. This flow variation led to changes in wall shear stress, but had a relatively small impact on low shear area in hemodynamic calculations.

MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE (2021)

Article Cardiac & Cardiovascular Systems

Effect of Aneurysm and Patient Characteristics on Intracranial Aneurysm Wall Thickness

Jason M. Acosta et al.

Summary: Among the patient and aneurysm characteristics studied, maximum dome diameter, neck size, and polycystic kidney disease (PKD) had the most significant impact on IA wall thickness and uniformity. Furthermore, wall thickness heterogeneity was more common in ruptured IAs, women, and patients with multiple IAs.

FRONTIERS IN CARDIOVASCULAR MEDICINE (2021)

Review Engineering, Biomedical

Vascular Mechanobiology: Homeostasis, Adaptation, and Disease

Jay D. Humphrey et al.

Summary: Cells in the vascular wall are highly sensitive to mechanical changes. In healthy arteries, mechanical forces regulate signaling and gene expression for vessel wall remodeling, but diseases often involve maladaptive remodeling and compromised homeostatic mechanisms. Disease progression is characterized by positive feedback loops that generate mechanobiological instabilities, ultimately overriding homeostatic pathways.

ANNUAL REVIEW OF BIOMEDICAL ENGINEERING, VOL 23, 2021 (2021)

Article Biophysics

On delayed transition to turbulence in an eccentric stenosis model for clean vs. noisy high-fidelity CFD

A. L. Haley et al.

Summary: Recent comparisons between experiments and CFD simulations show potential sensitivity of axisymmetric CFD models to small perturbations induced by mesh and inlet velocity for flow in FDA standardized nozzle geometry. While high-fidelity CFD of a non-axisymmetric stenosis model shows transition at Re - 700-800, experimental measurements report transition at Re - 400-500. Adding small-magnitude random noise at the inlet in the simulations brings CFD results more in-line with experiments, revealing a more gradual transition towards turbulence.

JOURNAL OF BIOMECHANICS (2021)

Article Multidisciplinary Sciences

Nonlinear hydrodynamic instability and turbulence in pulsatile flow

Duo Xu et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2020)

Article Biophysics

On the spectrographic representation of cardiovascular flow instabilities

Thangam Natarajan et al.

JOURNAL OF BIOMECHANICS (2020)

Article Engineering, Biomedical

High-frequency wall vibrations in a cerebral patient-specific aneurysm model

Andrea Balasso et al.

BIOMEDICAL ENGINEERING-BIOMEDIZINISCHE TECHNIK (2019)

Article Engineering, Biomedical

High-frequency wall vibrations in a cerebral patient-specific aneurysm model

Andrea Balasso et al.

BIOMEDICAL ENGINEERING-BIOMEDIZINISCHE TECHNIK (2019)

Article Biophysics

On the quantification and visualization of transient periodic instabilities in pulsatile flows

Muhammad Owais Khan et al.

JOURNAL OF BIOMECHANICS (2017)

Article Acoustics

Flow-induced vibration analysis of constricted artery models with surrounding soft tissue

Huseyin Enes Salman et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2017)

Article Engineering, Biomedical

Diversity in the Strength and Structure of Unruptured Cerebral Aneurysms

Anne M. Robertson et al.

ANNALS OF BIOMEDICAL ENGINEERING (2015)

Article Cardiac & Cardiovascular Systems

Role of Fluid Dynamics and Inflammation in Intracranial Aneurysm Formation

Alexis S. Turjman et al.

CIRCULATION (2014)

Article Medicine, General & Internal

Prevalence of Unruptured Cerebral Aneurysms in Chinese Adults Aged 35 to 75 Years

Ming-Hua Li et al.

ANNALS OF INTERNAL MEDICINE (2013)

Article Biophysics

Direct numerical simulation of transitional flow in a patient-specific intracranial aneurysm

Kristian Valen-Sendstad et al.

JOURNAL OF BIOMECHANICS (2011)

Article Biophysics

Computational vascular fluid-structure interaction: methodology and application to cerebral aneurysms

Y. Bazilevs et al.

BIOMECHANICS AND MODELING IN MECHANOBIOLOGY (2010)

Article Engineering, Multidisciplinary

Fluid-structure interaction modeling of blood flow and cerebral aneurysm: Significance of artery and aneurysm shapes

Ryo Torii et al.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2009)

Article Computer Science, Interdisciplinary Applications

Performance of a new partitioned procedure versus a monolithic procedure in fluid-structure interaction

Joris Degroote et al.

COMPUTERS & STRUCTURES (2009)

Article Surgery

Patient-Specific AAA Wall Stress Analysis: 99-Percentile Versus Peak Stress

L. Speelman et al.

EUROPEAN JOURNAL OF VASCULAR AND ENDOVASCULAR SURGERY (2008)

Article Clinical Neurology

Management of intracranial hypertension

Leonardo Rangel-Castillo et al.

NEUROLOGIC CLINICS (2008)

Article Engineering, Multidisciplinary

Artificial added mass instabilities in sequential staggered coupling of nonlinear structures and incompressible viscous flows

Christiane Foerster et al.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2007)

Article Engineering, Multidisciplinary

Computer modeling of cardiovascular fluid-structure interactions with the deforming-spatial-domain/stabilized space-time formulation

R Torii et al.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2006)