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A comment on Ask HN: What is one tech product you still can’t comprehend how it’s built?. Parent comment

Re:Ask HN: What is one tech product you still can’t comprehe... by habi on Tuesday June 07, 2022 @05:06AM (#31651642)
> CAT scanners have an X-ray source, and a linear detector array mounted opposite each other on a ring that spins continuously as you are moved through the scanner.

Just a nit-picky detail; in human CT scanners it's usually a (linear) array of 2D detectors, not a line-detector.

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Re:Ask HN: What is one tech product you still can’t comprehe... by mikewarot on Tuesday June 07, 2022 @06:59AM (#31652362)
so they're actually doing 2d data capture.. oh... that makes sense... otherwise you waste all the x-ray that went through the patient slightly off the plane of the circle.

We don't want to waste X-ray exposure, do we?

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