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Computerised Tomography (or CT scanning) is a kind of very smart X-ray, in which the normal "blackness" or "whiteness" of an X-ray is separately measured for millions of pixels in 3 dimensions by computerised calculation of the values of a "slice" of tissue which are put together again to conjure up a fine-grain digital image of that cut of tissues being examined
CT scanning broke the ground many years ago for the development of modern highly intricate images of previously hidden areas of the body (like the brain), adjustable after
completion of the investigation for density and contrast
Modern machines have a far higher resolution than the earliest versions, and some (like ours) can reassemble pixels in spiral formation, greatly enhancing the information gained |
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