PMC

Simple illustration showing method of obtaining asymmetry measurements.

Original asymmetric AAA of Patient 2 (left) and the modified axisymmetric AAA (right).

Diagram depicting how measurements of asymmetry are determined once AAA centreline is created. Example shown is for Patient 3.

Relationships between posterior wall stress and anterior asymmetry (left column) and posterior wall stress and diameter (right column) for Patients 11–15.

Relationships between posterior wall stress and anterior asymmetry (left column) and posterior wall stress and diameter (right column) for Patients 1–5.

Relationships between posterior wall stress and anterior asymmetry (left column) and posterior wall stress and diameter (right column) for Patients 6–10.

Comparison of the posterior wall stress for the symmetric and asymmetric AAA case for Patient 2. Peak stress for this asymmetric case was located on the anterior-right wall.

Example CT scans showing the creation of polylines on each slice, together with the centre point of each polyline. Once polylines are created on each scan in the series, the slices are stacked together to form the model on the right. Example shown is for Patient 3.

Schematic of representative AAA showing how dimensions are obtained from each AAA model. Surface area and volume both encompass the total surface area or volume of the AAA from immediately below the renal arteries to immediately prior to the iliac bifurcation. Dia_norm is the infrarenal aortic diameter of the particular case.