Abdominal aortic aneurysm (AAA) can result in life-threatening rupture. AAA diameter remains the only clinically useful parameter to predict growth and rupture risk. However, some high-risk AAAs can be overlooked due to their small diameters. AAA stiffness is associated with its extracellular matrix remodeling and thus potentially provides more relevant rupture prediction. Therefore, this study aims to estimate AAA stiffness using aortic MRE in patients with and without aneurysmal events. This is the first study to demonstrate that AAA stiffness and AAA/remote normal (AAA/RN) stiffness ratio are significantly lower in patients with aneurysmal events.
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