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CAT Scan
Image courtesy of The National Institutes of Health,

CAT Scan:

Pictures of structures within the body created by a computer that take the data from multiple X-rays and turns them in colored images on a screen. The CAT (computerized axial tomography) scan can reveal some soft-tissue and other structures that cannot even be seen in regular X-rays. Using the same dosage of radiation as that of an ordinary X-ray machine, doctors can see an entire slice of the body with an image that is 100 times sharper than an ordinary x-ray. Also known as a CT-Scan.