Lower Extremity Arterial Duplex
(Blood Flow Evaluation)

A Lower Extremity Arterial Duplex is used to evaluate the arteries of the leg for plaque and abnormal blood flow. This study determines the presence and severity of Peripheral Arterial Disease (PAD). In patients with PAD, blood flow in the legs is abnormal and is decreased by narrowed or blocked arteries. If severe PAD is untreated, it can result in amputation.

In this examination, gel is put on the skin of the leg. A transducer (a handheld device) sends high-frequency sound waves into the leg, and images of plaque in arteries and the changes in blood flow are measured. This information is then used to determine appropriate treatment.

Plaque is seen on the left, flow on the right

Abnormal blood flow in a bypass graft

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