A computerized tomography scan, also called a CT scan, is a type of imaging that uses X-ray techniques to create detailed images of the body. It then uses a computer to create cross-sectional images, also called slices of the bones, blood vessels and soft tissues inside the body. CT scan images show more detail than plain X-rays do.
A CT scan has many uses. It's used to diagnose disease or injury as well as to plan medical, surgical or radiation treatment.
Why it's done
Your healthcare professional may suggest a CT scan for many reasons. For instance, a CT scan can help:
- Diagnosing muscle and bone conditions, such as bone tumors and breaks, also called fractures.
- Show where a tumor, infection or blood clot is.
- Guide procedures such as surgery, biopsy and radiation therapy.
- Find and watch the progress of diseases and conditions such as cancer, heart disease, lung nodules and liver masses.
- Watch how well certain treatments are, such as cancer treatment, work.
- Find injuries and bleeding inside the body that can happen after trauma.