Diagnosis

Understanding Venogram

Choose a preferred language

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 healthcare provider will put a catheter, or needle, into 1 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: 09/01/2022

© 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.
Related Articles
Read article
Wellness
Venography

Venography is a procedure that makes X-ray studies of the veins. It shows how blood flows in your veins.

Read article
Urology
Renal Venogram

A renal venogram is an imaging test to look at the veins in and around your kidneys. Your doctor may also use the test to find out what is causing your high blood pressure (hypertension).

Read article
Brain Health
Understanding Cerebral Angiography

This test makes X-ray images of blood vessels in your brain. It is used to help your doctor find problems with those blood vessels.

Read article
Brain Health
Cerebral Angiogram

A cerebral arteriogram is a catheter-based exam of the blood vessels in the brain, head, and neck.