Fluid Structure Interaction in Abdominal Aortic Aneurysms
Author Information
Author(s): James H Leung, Andrew R Wright, Nick Cheshire, Jeremy Crane, Simon A Thom, Alun D Hughes, Yun Xu
Primary Institution: Imperial College London
Hypothesis
The study aims to compare static and dynamic wall stress analysis of patient-specific abdominal aortic aneurysms (AAAs).
Conclusion
The study suggests that fully coupled fluid structure interaction simulations add little to rupture risk prediction compared to static structural models.
Supporting Evidence
- Maximum diameter is not a reliable determinant of AAA rupture.
- Wall stress may be a better indicator of rupture risk.
- Fluid flow can change local wall stresses slightly, but the effect on peak wall stress is negligible.
Takeaway
This study looked at how blood flow affects the stress on the walls of aneurysms, finding that the flow doesn't change the risk of rupture much.
Methodology
Patient-specific AAA models were created from CT scans of three patients, and simulations were performed using fluid structure interaction and static structural models.
Limitations
The study did not include intraluminal thrombus or calcification in the models, which may affect the accuracy of stress predictions.
Participant Demographics
Three male patients, aged 72, 84, and 77, all hypertensive and ex-smokers.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website