Aortic Aneurysm - Diagnosis - Diagnosis

To diagnose an aortic aneurysm, your doctor will do a physical exam and an imaging test to confirm a screening test. An abdominal aortic aneurysm is diagnosed when your abdominal aorta is three centimeters or greater in diameter. The normal diameter of the thoracic aorta depends on your age, your sex, and which part of the thoracic aorta is measured.