Evaluation of Aortic Aneurysms With Focus on Wall Stress and Wall Rupture Risk

Evaluation of Aortic Aneurysms With Focus on Wall Stress and Wall Rupture Risk by Computational Finite Element Analysis With Dedicated Software

Retrospective study to evaluate the impact of computational wall stress analysis based on computed tomography (CT) of ruptured and not-ruptured aortic aneurysms as an additional predictor for rupture with dedicated software.

In patients with known aortic aneurysm who received clinically indicated CT during a time period from 01/2004-12/2013 the CT data was evaluated with dedicated software, A4clinics, VASCOPS GmbH, Graz, Austria. The following parameters will be evaluated: exterior and luminal diameter, intraluminal thrombus (ILT) thickness, vessel-, luminal- and intraluminal thrombus volume, peak wall stress (PWS), peak wall rupture risk (PWRR), von Mises-stress and rupture risk-index in the ILT.

Inclusion Criteria:

Clinical indicated CT data from patients with known aortic aneurysms.

Clinical indication was:

• Follow up CT examination by known aortic aneurysm
• Patient with known aortic aneurysm with new acute clinical symptoms
• Patients with clinical suspicion of aortic aneurysm

Exclusion Criteria:

• known exclusion criteria for CT examination as known allergy to iodine or contrast media
• known pregnancy