MR Venogram (Magnetic Resonance Venography)

An MR venogram is an imaging test that uses MRI technology and sometimes contrast dye to visualize veins. It helps detect blood clots (deep vein thrombosis), venous malformations, and other vascular abnormalities in the brain, abdomen, or legs.

• Remove all metallic objects before the scan.
• Inform your provider if you have implants, kidney disease, or allergies to contrast dye.
• Fasting may be required if contrast material is used.
• Tell your doctor if you are pregnant or claustrophobic.

You will lie on a table that slides into the MRI scanner. The machine makes loud tapping noises; ear protection is provided. The scan is painless and usually lasts 30–60 minutes. If contrast dye is injected, you may feel a brief cooling sensation.

• Safe and noninvasive, but strong magnets can affect some implants.
• Contrast dye can cause rare allergic reactions or kidney complications in at-risk patients.
• Claustrophobia may cause discomfort.

A radiologist interprets the images and sends a report to your doctor. Your provider will review results and recommend further management, such as anticoagulation therapy or surgical consultation if clots are found.