Computed tomography, or CTs, changed the way medicine is done. Nowadays, this "donut of truth" is used to diagnose diseases, perform imageguided 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 (MLEM).