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A dual energy computed tomography (DECT) scan is a computerized X-Ray with two X-Ray beams (instead of one beam standardly used in regular CT scans). This tool can be used to produce 3-D images that use color coding to differentiate between different materials in the body. Each of the two beams is set to a different "energy" (like a wave frequency).

The idea is that different materials in the body (such as calcium, uric acid, soft tissue, etc) all absorb radiation to varying degrees at the two frequencies. Thus, depending on the degree of radiation absorbed by a particular tissue, the scanner can identify what the tissue is comprised of. The computer can then code different tissues with different colors, so that it is easy to see what a region is comprised of at a glance.

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14y ago

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