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A comment on Building a DIY CT/CAT scanner for $200 [video].

Re:Building a DIY CT/CAT scanner for $200 [video] by walterbell on Sunday January 28, 2024 @01:30AM (#39163072)
From YT comments:

  … this kid appears to know what he’s doing.  He even built a fairly outrageous DC power supply specifically for this project.  

  … It was smart to use the remote control to keep away from the X-rays! … hence, why he was across the yard … Protip man, build a little lead or steel vault for that thing to protect yourself AND remove background radiation that is noising up your image. Then get yourself a survey meter and make sure you are keeping exposure outside the vault to 5mr/Hr or less.

  … Excellent work young man.  When I read the title of your video, I thought perhaps you misunderstood the complex nature of the reconstruction algorithm.  Turns out I was the one trying to keep up with your explanations and logic.  

  … I fix CT scanners for a living.  This is pretty darn cool!!  When you started out, I was trying to figure out how you were going to make all of that rotate around your “patient.”  You simply rotated your “patient” itself.  Well done!  

  … While not medical grade, it still demonstrates the working principle and actually extremely useful for imaging internal structures of all sorts of things!
Consumer electronics imaged by industrial CT scanner: https://www.lumafield.com/article/inspect-electronics-indust...

Precursor videos:

Building an X-Ray power supply, https://youtube.com/watch?v=ppIhQ0ZldZ0

Turning TV parts into an X-ray machine, https://youtube.com/watch?v=LXnK_lMQbYc

Building an X-Ray machine in my backyard, https://youtube.com/watch?v=oxfPK6PlyRY

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Re:Building a DIY CT/CAT scanner for $200 [video] by zettabomb on Sunday January 28, 2024 @01:44AM (#39163130)
>I fix CT scanners for a living. This is pretty darn cool!! When you started out, I was trying to figure out how you were going to make all of that rotate around your “patient.” You simply rotated your “patient” itself. Well done!

It's worth noting that this is in fact the approach for most industrial CT scanners, which are perfectly capable of punching through perhaps half an inch of steel in my experience (not a CT tech, just an engineer that has used them - there might be more powerful ones out there). It's usually just a small turntable. Conveniently, the object to be imaged usually doesn't care too much about the radiation when it's made of metal.

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