How are CT scans made?
Computed tomography (CT) uses X-ray photons for image production, with digital reconstruction.
This imaging procedure uses the CT scanner, which consists of an X-ray tube and detectors. The tube produces an X-ray beam that passes through the patient and is captured by the detectors, followed by reconstruction to create a 2D or 3D image. Contrast media such as intravenous and oral contrast agents may be employed during a CT study.
Common CT clinical applications include:
As with plain radiography, CT uses X-ray radiation to produce images; radiation doses from computed tomography are higher because of multiple exposures.