Sensitivity and specificity of stenosis ≥ 50% at the iliac arteries were 63.2% and 97.3%, at the femoral arteries were 70.9% and 92.2%, and at the infra-popliteal arteries were 74, 8% and 85, 5%, and all of arterial lower limbs were 72, 2 and 91, 3.