Mechanical properties of the aneurysmal aorta

75 subjects, including 30 patients with aortic aneurysm, 11 with peripheral arterial disease, and 34 control subjects (10 in their third decade of life, 11 middle-aged, and 13 elderly).

Control subjects with normal aortic diameter and patients with peripheral arterial disease

Aortic stiffness (pressure-strain elastic modulus, Ep) measured non-invasively using M-mode ultrasonographysurrogate