How a CT scan sees inside of you in 3D

Computed tomography, or CTs, changed the way medicine is done. Nowadays, this "donut of truth" is used to diagnose diseases, perform image-guided procedures, and even allows us to create 3D models of your insides. So how does it do this?
Here we explore reconstruction algorithms in CT in a (hopefully) easy to understand way. Specifically, we break down the science behind filtered backprojection and iterative reconstruction (ML-EM).

[@ChrispyNugget]

Great visual and excellent explaination. Thanks Doc!

[@willtsaivlogs8504]

Explaining from first principles ! Very easy to understand ! 🎉awesome work

[@bachvu8500]

A wonderful explanation!!

[@freemanojeikere]

Thanks

[@juliadegroot]

Wow 🧐

[@juliadegroot]

I never knew how complex it was!

[@akashbauri7606]

😀😀

[@akashbauri7606]

😀

[@pushparanithok935]

Qķ8€¥2

[@BrendanSmallButera]

That's a lot of radiation. MRIs have zero radiation. Get an MRI instead.

[@CuriousDoc]

CT is better suited for some applications e.g. imaging the lungs 🫁

[@akashbauri7606]

😀😀

[@akashbauri7606]

😀