Fluid/structure interaction applied to the simulation of Abdominal Aortic Aneurysms

Area of Science:

• Biomedical Engineering
• Computational Fluid Dynamics
• Medical Imaging

Background:

• Aneurysms are vessel dilatations with a high risk of lethal rupture.
• Accurate prediction of aneurysm rupture is critical for patient outcomes.
• Current diagnostic tools lack patient-specific predictive capabilities.

Purpose of the Study:

• To develop a virtual aneurysm model for predicting rupture risk.
• To create an automated, user-friendly diagnostic tool for non-experts.
• To integrate patient-specific imaging data with physiological values for enhanced analysis.

Main Methods:

• Created a virtual aneurysm model using real patient imaging data.
• Performed fluid/structure interaction (FSI) simulations to compute wall displacement and stress.
• Implemented Windkessel model for outlet boundary conditions and surface elements for structural stability.

Main Results:

• Computed displacement, Von Mises stress, and outlet pressure profiles.
• Successfully integrated realistic geometry with FSI analysis.
• Developed a foundation for an automated tool for industrial applications.

Conclusions:

• The developed virtual aneurysm model and FSI simulations provide a robust framework for rupture risk prediction.
• The study paves the way for an automated, accessible diagnostic tool for clinicians.
• This approach enhances the potential for early intervention and improved patient management of aneurysms.