Association of aneurysm sac-specific eccentricity and abdominal aortic aneurysm rupture risk using computed tomography imaging.

ABSTRACT:

Background

Abdominal aortic aneurysms (AAAs) often exhibit eccentric expansion, making maximum diameter (Dmax) an insufficient indicator of true aneurysm expansion. This study integrates eccentricity into diameter assessment, focusing on the AAA sac to explore its role in predicting AAA rupture risk.

Methods

A retrospective case-control study matched ruptured AAA patients with asymptomatic AAA patients based on age and Dmax. Computed tomography imaging data of infrarenal AAAs were analyzed, focusing on the aneurysm body rather than the traditional infrarenal segment. Eccentricity parameters, including Eccentric Diameter and Arch Curvature Ratio, were assessed. Univariate logistic regression evaluated the relationship between morphological variables and AAA rupture, while the

SUBMITTER: Li J 

PROVIDER: S-EPMC12514593 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature