A computerized tomography scan (CT or CAT scan) creates cross-sectional images of the body using computers and rotating X-ray devices. These images provide more details than standard X-ray images. Soft tissues, blood vessels, and bones in different parts of the body can all be visible. A CT scan can be used to see the internal structural condition of the head, shoulders, heart, abdomen, knees, and chest.
During a CT scan, you have to lie in a doughnut-shaped tunnel-like machine as the inside rotates, and takes a series of X-rays from various angles. These images are then moved to a computer, where they are combined to generate images of slices or cross-sections of the body. They can also be combined to create a 3D representation of a specific body part. These images are sent to a radiologist for examination. It is vital to lie still & you shouldn't wear any metal objects. The entire procedure may take near about 30 minutes to 1 hour.
A CT scan can be used for various purposes, but it's especially applicable for diagnosing diseases and assessing injuries. The imaging technique will help a doctor to: