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What are noninvasive Arterial and venous duplex studies and indications for these procedures?

A duplex ultrasound can help diagnose the following conditions:

  • Arterial- identify obstructive atherosclerotic diseases in the carotid arteries; surveillance of infrainguinal bypass grafts; surveillance of lower limb arteries after angioplasty
  • Venous- diagnose deep venous thrombosis above the knee, assess the competency of deep veinous valves, assess patients with recurrent varicose veins, identify and locate reflux at saphenopopliteal junction (http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1117713/)