- Depressed skull fractures result in the bone of the skull vault being depressed inward into the cerebral parenchyma. - Mostly occur in the fro...
9 February 2008
Global helium supplies running out
One fifth of the world's helium supplies are used in for cooling the superconducting magnets used in MRI scanners. Now supplies of helium are running out.
As it says in this article, Goodbye Helium, Goodbye Brainscans.
Here's another article.