A computerized tomography (CT) scan combines a series of X-ray images taken from different angles around your body and uses computer processing to create cross-sectional images (slices) of the bones, blood vessels and soft tissues inside your body. CT scan images provide more-detailed information than plain X-rays do.

How long does a CT scan take?

While each scan is taken, you'll need to lie very still and breathe normally. This ensures that the scan images aren't blurred. You may be asked to breathe in, breathe out, or hold your breath at certain points. The scan will usually take around 10 to 20 minutes.

What can I expect at my first CT scan?

CT scans are painless and fast. You will lie on a long narrow table that slides you into a donut-shaped machine that is open on both sides. A Velcro strap will be placed around you for safety. When indicated, use of a contrast material could be necessary for your exam.