cross-posted from: https://lemmy.world/post/1779005
Apparently this was done because air captures less X-rays than CSF and thus creates more contrast with brain tissue compared to the cerebrospinal fluid.
Unfortunately this was pretty painful and uncomfortable.
Gives new meaning to the term “air head”.
I’ll see myself out, but only after I’ve read the Wikipedia article in full. Morbid curiosity and all that.