CT scan

Key facts A computed tomography (CT) scan is a type of x-ray. It’s used to make detailed 2D or 3D images of the inside of your body. A CT scan can help diagnose different medical conditions. When you have a CT scan, you will lie flat, and a machine shaped like a doughnut will scan your body. It’s important to only have CT scans when necessary since they use a higher level of radiation than other imaging types. What is a CT scan? A computed tomography (CT) scan is a type of x-ray that creates 2- or 3-dimensional images of your body.