A CT angiography is used to diagnose diseases of blood vessels and related problems, including injury, blockages, aneurysms, disorganized blood vessels, and congenital abnormalities in the blood vessels or the heart, according to RadiologyInfo.org. Body parts tested include the brain, neck, heart, chest, pelvis, legs, feet, hands, arms and abdomen.
A CT angiography is used to detect atherosclerotic disease in the carotid artery, which often causes a stroke, and to detect disease in the arteries that supply the kidneys. It is also used to evaluate arteries that feed a tumor prior to the removal of the tumor, states RadiologyInfo.org. It can also be used to identify a dissected or split aorta in the chest or abdomen.