http://www.w3.org/ns/prov#value | - Why the test is performed: Your doctor may order this test if there are signs or symptoms of a problem with the aorta, including:Aortic aneurysmAortic dissectionCongenital (present from birth) problemsDouble aortic archCoarction of the aortaVascular ringInjury to the aortaTakayasu arteritis
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