A medical imaging technique that uses X-rays and computer processing to produce detailed cross-sectional images of the inside of the body.
A CT scan (computed tomography scan) combines multiple X-ray measurements taken from different angles to create cross-sectional images, which can be reconstructed into detailed views of organs, bones, blood vessels, and other structures.
Some CT examinations use a contrast agent to make particular tissues or blood vessels easier to see. CT can provide more detailed anatomical information than a conventional X-ray, but it exposes the patient to ionizing radiation.
COMMONLY CONFUSED WITH
- X-ray: also uses ionizing radiation but generally produces a two-dimensional projection image rather than the cross-sectional images produced by CT.
- MRI: uses magnetic fields and radio waves rather than ionizing radiation.
SEE ALSO