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- (acronym for computerized axial tomography)
- sophisticated method of X-ray imaging. Quick
- and noninvasive, CAT scanning is used in
- medicine as an aid to diagnosis, helping to
- pinpoint problem areas without the need for
- exploratory surgery. It is also used in
- archeology to investigate mummies.
- The CAT scanner passes a narrow fan of X-rays
- through successive slices of the suspect body
- part. These slices are picked up by crystal
- detectors in a scintillator and converted
- electronically into cross-sectional images
- displayed on a viewing screen. Gradually,
- using views taken from various angles, a
- three-dimensional picture of the organ or
- tissue can be built up and irregularities
- analyzed.
-