Duplex Ultrasonography

Duplex ultrasonography is a form of ultrasound that produces images that differentiate between the body’s soft tissues and its fluid-filled structures. Duplex ultrasound can also detect motion, such as the movement of blood cells. Duplex ultrasound is used to detect the presence and severity of numerous conditions, including: thrombosis (blood clots); blockages from atherosclerosis (hardening of the arteries); thrombophlebitis (an inflammation of the blood vessels); trauma to an artery or vein; Raynaud’s phenomenon (a spasm of small blood vessels in the fingers); and increases in the thickness of the blood vessel lining.