what is the difference between an arterial and venous ultrasound?
Arterial vs venous thrombosis - What's the difference between arterial and venous thrombosis? 180 degrees. Arterial thrombosis is stoppage of blood flow from the heart to different parts of the body. The result is tissue death: in arteries to the heart=heart attack; in arteries to the legs=gangrene. Venous thrombosis is within veins which return blood to the heart.
Venous ultrasound helps to detect blood clots in the veins of the legs before they become dislodged and pass to the lungs. It can also show the movement of blood within blood vessels. Compared to venography, which requires injecting contrast material into a vein, venous ultrasound is accurate for detecting blood clots in the veins of the thigh down to the knee. In the calf, because the veins become very small, ultrasound is less accurate.