Abdominal aortic aneurysm on ultrasound

Routine sonographic evaluation of an abdominal aortic aneurysm involves measuring the anteroposterior, longitudinal, and transverse dimensions of the aorta. In this instance, the diameters in the transverse dimensions (5.75 and 5.43 cm) are much greater than normal (typically around 2 cm or less). Thrombus or echodense calcifications (arrow) in or adjacent to the aortic wall may also be visualized.