Computed tomography (CT)

Computed tomography (CT) is a medical imaging technique used in radiology to get detailed images of the body non-invasively. CT scanners use a rotating x-ray tub and a row of detectors placed in the gantry to measure x-ray attenuations by different tissues inside the body. The multiple x-ray measurements taken from different angles are then processed on a computer using reconstruction algorithms to produce cross-sectional slices of the body.

Contrast enhanced CT (CE-CT) can also be used to visualise structures within the body which would otherwise be difficult to delineate from their surroundings. Contrast agents are usually iodine based.