Venography is an x-ray test used to study the veins of the body. Lower leg venography is used to study the veins in the legs.

This test may be recommended by your doctor in order to:

  • Diagnose deep vein thrombosis —a blood clot deep within the leg that may lead to a pulmonary embolism, which is an obstruction of a blood vessel in the lungs
  • Find obstructions in the veins
  • Assess vein problems you have had since birth
  • Assess the functioning of deep leg vein valves
  • Find a vein that will be used to make a bypass graft

Deep Vein Thrombosis
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