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

Patients with known aortic aneurysms, who underwent clinical indicated CT during a time period from 01/2004-12/2013