In patients with symptoms of Peripheral Arterial Disease (PAD), the ankle-brachial index (ABI) is a non-invasive test that measures the blood pressure in the ankles and compares it with the blood pressure in the arms at rest and after exercise. Imaging tests such as ultrasound, magnetic resonance angiography (MRA), and computed tomographic (CT) angiography can provide additional information in diagnosing PAD. Individuals with PAD are at risk for developing coronary artery disease and cerebrovascular disease, which could lead to a heart attack or stroke. Your doctor may recommend one of these other tests. Doppler and Ultrasound (Duplex) imaging is a non-invasive method that visualizes the artery with sound waves and measures the blood flow in an artery to indicate the presence of a blockage. Computed Tomographic Angiography (CT) is a non-invasive test that can show the arteries in your abdomen, pelvis and legs. This test is particularly useful in patients with pacemakers or stents. Magnetic Resonance Angiography (MRA) is a non-invasive test that gives information similar to that of a CT without using X-rays. Angiography – during an angiogram, also called an arteriogram, a contrast agent is injected into the artery and X-rays are taken to show blood flow, arteries in the legs and to pinpoint any blockages that may be present.
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