Abdominal aortic aneurysms (AAA) are focal dilatations of the abdominal aorta measuring 50% greater than the proximal normal segment, or >3 cm in maximum diameter. The feared complication is rupture which is a surgical emergency due to its high mortality. Imaging has a key role in active sur… See more
WebNov 12, 2022 · Terminology The normal aortic diameter varies based on age, sex, and body surface area. In general, the term aneurysm is used when the axial diameter is >5.0 cm for the ascending aorta and >4.0 cm …