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:
- You will lie down on an exam table. The table may tilt to help the dye move through your body.
- You may be given medicine, so you don't feel any pain.
- A health care provider will put a catheter, or needle, into one of your veins. The location depends on which body part is being X-rayed.
- They will inject the dye into your vein.
- X-rays are taken as the dye moves through your body.
- You may be asked to hold your breath during the procedure.
Risks of a venogram
- Pain
- Blood clots
- Allergy to the dye
- Kidney problems
Author: Semko, Laura
Online Medical Reviewer: Anne Fetterman RN BSN
Online Medical Reviewer: Deepak Sudheendra MD
Online Medical Reviewer: Raymond Kent Turley BSN MSN RN
Date Last Reviewed: 09/01/2025
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