Find out what it's like to have a CT scan. 0:02 What is a CT scan? 0:18 Before your scan 0:46 What to expect during a CT scan 1:33 How long does a CT scan take? A CT scan is a test that uses x-rays and a computer to create detailed pictures of the inside of your body. It takes pictures from different angles. The computer puts them together to make a 3 dimensional (3D) image. CT (or CAT) stands for computerised (axial) tomography. Visit our website: https://www.cancerresearchuk.org/about-cancer/cancer-in-general/tests/ct-scan for more information on CT Scans, cancer staging and diagnosis. https://www.cancerresearchuk.org/about-cancer