Computed Tomography (CT) Scan of the Foot with Intravenous Contrast

What is this test?

A foot CT is an imaging test that uses X-rays to create detailed cross-sectional pictures of the bones and surrounding soft tissues. Intravenous contrast is a dye given through a vein to help certain tissues, blood vessels, and areas of inflammation appear more clearly.

Why might I need this test?

Your clinician may order this scan to evaluate an unexplained foot injury, a suspected fracture, persistent pain or swelling, infection, inflammation, a soft-tissue mass, or complications of another medical condition. It can also help guide treatment or further testing.

How is the test performed?

You will lie on a padded table while a CT scanner rotates around the affected foot. If contrast is needed, it is usually injected into a vein in your arm before or during the scan, and the images usually take only a short time to complete.

How do I prepare for the test?

Follow the imaging center's instructions, including any fasting requirements. Tell the technologist if you are pregnant or may be pregnant, have kidney disease, have had an allergic-like reaction to CT contrast, or take medicines such as metformin. Remove metal objects and clothing with metal near the area being scanned, and do not stop medication unless your clinician instructs you to do so.