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1) don’t listen to scho.
2) CT-as Hamas/Monti said, it’s an array of detectors moving in a circular motion using radiation. It constructs an image from those detectors. Imagine that your body is a loaf of bread. And you are able to pick the most middle slice of bread out @ as small as 1 cm, look at closely, then place it back into the loaf. Then put this slices into a series of images that a radiologist can scroll through.
Essentially, that’s what CT does. Software allows reconstruction in several planes and also, allows bone to removed from area to create and show (soft tissue and brain) images of specific areas.
Source- years at companies that engineer these scanners.
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