What are the different kinds of venography?

Depending on the reason for the procedure, several methods can be used to examine the veins with venography:
  • ascending venography -- identifies the presence and location of deep vein thrombosis (DVT)
  • descending venography -- assesses the function of the deep vein valves
  • venography of the upper extremities -- assesses blockage, lesions, or thrombosis in the veins of the neck and axillary (armpit) region
  • venacavography -- evaluates the inferior vena cava, the vein that brings bloods to the heart, for obstruction and malformation