A venogram is a type of imaging procedure. It uses X-rays and a special dye to look at veins in your body. The dye is called a contrast material. An X-ray is a picture of the inside of your body. Low levels of radiation create the image.
Why a venogram is done
A venogram is often done to find blood clots in the veins. It can help diagnose deep vein thrombosis. This is a blood clot in a deep vein, often in your legs. It's also done to find other problems related to the veins. These include varicose veins, a vein defect, or the narrowing of a vein.
How a venogram is done
This procedure is often done on an outpatient basis. That means you can go home afterward. During the procedure:
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You will lie down on an exam table. The table may tilt to help the dye move through your body.
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You may be given medicine, so you don’t feel any pain.
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A healthcare provider will put a catheter, or needle, into 1 of your veins. The location depends on which body part is being X-rayed.
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They will inject the dye into your vein.
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X-rays are taken as the dye moves through your body.
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You may be asked to hold your breath during the procedure.
Risks of a venogram
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Pain
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Blood clots
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Allergy to the dye
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Kidney problems
Author: Semko, Laura
© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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Venogram
A venogram is a test that lets your healthcare provider see the veins in your body, especially in your legs. A special dye is injected that can been seen on an X-ray. The dye lets your healthcare provider see your veins and how healthy they are.
