Why do CT scanners need to spin so fast?
In: Engineering
A CT scanner takes x-rays from all angles and composits them into a single 3D image. The faster it spins, the quicker it can move around to take those x-rays and complete its work. Apart from improving the machine’s time efficiency and making it overall a more convenient thing to operate, the higher speed also helps it generate more accurate scans. Think of the spin rate like the shutter speed of a camera. The slower the shutter, the longer it stays open to let light in, which creates blurry images from all the movement. There’s less movement (of the subject patient) between each “snapshot” of a faster CT scanner, so each image is clearer and the end result is higher quality.
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