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CAT Scan Reconstruction

SGsgcc_•Created April 20, 2021
CAT Scan Reconstruction
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Instructions

Shift click the green flag to run in turbo, or use the edit menu to turn on turbo mode. This project goes through the basic steps of an x-ray imaging system, like used in CT/CAT/PET scans. 1. X-rays can go through stuff, but they get weaker as they go. You'll need a source of x-rays and an array of detectors to measure their strength on the other side. 2. You'll need a bunch of angles, rotating the subject is easier, but people find that uncomfortable, so in a real CT scanner the scanner spins instead. 3. For each angle, you can draw one row of an image called a "Sinogram". 4. To reconstruct an image, you "smear out" each row of the sinogram, and rotate the image and do it again for the next row. 5. But reconstructing from a raw sinogram is too blurry. Because math, you can apply a filter to the sinogram before reconstructing, and get much better results.

Project Details

Project ID518421632
CreatedApril 20, 2021
Last ModifiedJune 17, 2021
SharedApril 21, 2021
Visibilityvisible
CommentsAllowed