Rupture risk of asymptomatic AAAs in this group was estimated using Biomechanical rupture rist assessment (BRRA). BRRA considers an AAA as a pressure vessel and estimates its risk of rupture by comparing its wall stress to wall strength

Rupture risk of asymptomatic AAAs in this group was estimated by a classical approach based on a maximal diameter.

3D computational model is created from CT angiographic images available during standard AAA diagnostic process. Vascular wall stress is assessed based on the 3D model using Finite element method to identify highly stressed parts of AAA and results are compared to populational wall strength information (gathered from previous large histological study), thus rupture risk (stress/strength ratio) of each particular AAA is estimated. Other relevant factors such as gender, blood pressure, presence of intraluminal thrombus etc. are used during the calculation as well.

Identify the number of number of false positive and false negative cases assessed by BRRA method according to clinical data and compare these data to control group where the decision making process was based only on maximal diameter of AAA

To investigate the feasibility of cooperation between the biomechanical and medical teams in a modified AAA management workflow leading to reduced time required for an AAA assessment