Test Overview
A venogram is an
X-ray test that takes pictures of the blood flow
through the veins in a certain area of the body.
During a venogram, a dye is put into your veins so they can be seen
clearly on an X-ray picture. A venogram looks at the condition of your veins
and the valves with your veins.
A venogram can look at the veins in your legs, pelvis, arm, or the
veins leading to the heart, or the veins leaving your kidneys. A venogram may
be done to find a blood clot (deep vein thrombosis, or DVT). Blood
clots in the deep veins can be serious because the clot or part of it can break
off and move through the blood. It can block an artery in your lung (pulmonary embolism) which can be
life-threatening.
See an illustration of
normal
blood flow
and blood flow blocked by a
blood
clot (thrombus)
.