Peripheral Arterial Doppler Ultrasound
Arterial duplex ultrasound exam is a very simple, non-invasive and painless test. It incorporates Doppler ultrasound along with traditional ultrasound.
Traditional ultrasound uses sound waves to take images of arteries which will show stenosis (narrowing) and occlusion (blockage) of the arteries and veins. Whereas Doppler ultrasound uses the sound waves to detect the flow of blood in arteries. Being a combination of both the traditional and Doppler ultrasound, duplex exam shows the location, the type and the severity of the vascular disease. Lower extremity peripheral arteries include the distal aorta and the common iliac, internal iliac, external iliac, femoral, popliteal, and crural arteries
Arterial duplex ultrasound can help diagnose Peripheral Arterial Disease (PAD) by detection of stenosis or occlusions in segments of the peripheral arteries in symptomatic patients with suspected arterial occlusive disease. It is also used to detect Aortic Aneurysm and other vascular disorders. Sometimes it is used for venous mapping for cardiac bypass surgery and preoperative mapping for dialysis access.
It is used to monitor sites of previous surgical interventions (sites of previous bypass surgery), and various percutaneous interventions (angioplasty, thrombolysis/ thrombectomy, atherectomy, and stent placements).
Arterial duplex ultrasound is also used for follow-up for progression of previously identified disease, such as stenosis in an artery that has not undergone intervention, aneurysms, atherosclerosis, or other occlusive diseases.