Before MRI and CT — Xray the brain

story #39

This short clip from 1929 is boggling. For decades the brain was a black box, impossible to see inside. Then along came X-rays which of course pass through the skull, unless. Unless you drill a hole in the brain and inject a gas that stops X-rays from passing through. Voila, a view of brain’s interior. It was said to be an improvement of injecting air into the ventricles to see what they could see. We have come a long way.