Medical Imaging: CT and CAT scan
Computed tomography/computerized axial tomography
A computed tomography (CT) or computerized axial tomography (CAT) scan is a special type of x-ray that can produce detailed pictures of structures inside your body. A CT scanner works by directing a series of x-rays through your body to produce a detailed picture or a "slice" of the area being studied.
Each x-ray pulse lasts only a fraction of a second, and it takes only a few seconds for the machine to record many images.
Why is it done?
A CT scan is used to obtain information about many parts of the body, including:
- Most organs (liver, pancreas, intestines, kidneys, adrenal glands, lungs, or heart)
- Blood vessels
- Abdominal cavity
- Bones (particularly the spine) and the spinal cord