Understanding how an X-ray works is fundamental to understanding how a CT scan works, as a CT scan is essentially a three-dimensional, spiral version of an X-ray.

“so the other thing about x-ray that I think is very interesting for anyone who spends time looking at it just to appreciate it even though it seems so simple is nothing in the body is two-dimensional so you talked about how this photon is going through the body and if it hits her rib well that's gonna show up as white whereas if it's passing through the lung”