
CT — computed tomography
Fast, detailed, uses X-rays- How it works
- A rotating X-ray tube builds a stack of cross-sectional images through the body, which the computer reconstructs into detailed slices in any plane.
- What it is best for
- Chest, abdomen and pelvis; bleeding, obstruction, stones, abscess and tumour; acute trauma; the acute abdomen; suspected stroke; and bone detail.
- What the scan is like
- You lie on a table that moves through a wide, open ring. The scan itself usually takes seconds to a couple of minutes. A contrast injection is sometimes given through a vein, which can feel warm briefly.




