Whole Body Computed Tomography (CT) Scan with Contrast

What Is a Whole Body CT Scan Used For?

Whole body CT scans are primarily used to detect abnormalities such as tumors, infections, structural issues, or other conditions that may not be visible through standard imaging. They can help in diagnosing cancer, assessing organ function, identifying injuries, or evaluating symptoms like unexplained weight loss, pain, or fatigue. This type of scan is often used in oncology, oncology research, or when evaluating widespread symptoms that require a detailed body-wide assessment.

How Is the Test Performed?

You will lie on a table that moves through a large, donut-shaped machine. A contrast dye may be injected into a vein to enhance visibility of blood vessels and organs. The machine takes multiple X-ray images as the table moves through it, creating detailed cross-sectional images of your body. The process usually takes about 30 to 60 minutes, and you may need to hold your breath briefly during some images.

Preparation Before the Test

No special preparation is typically required, but you may be asked to fast for a few hours before the scan if contrast dye is used. Wear comfortable clothing without metal fasteners, and remove any jewelry or devices that could interfere with the imaging. Inform your doctor about any allergies, especially to contrast dyes, and let them know if you are pregnant or breastfeeding.

During and After the Test

During the scan, you may hear loud noises from the machine, but you will be able to communicate with the technician through a speaker. You may feel a slight pressure or warmth from the contrast dye but should not experience pain. After the scan, you can resume normal activities, but you may need to drink plenty of fluids to help flush out the contrast dye. Avoid driving immediately afterward if you received sedation.