09) Neuroscience for Neuroradiologists

Munro-Kellie Doctrine/Hypothesis (Yes the same Munro as Foramen of Munro) formulated around 1783

The volume of the head is constant. The contents of the head, brain, CSF, and blood are constant.

While it may seem obvious, if hemorrhage occurs in a fixed volume, the pressure (ICP) rises rapidly.

http://en.wikipedia.org/wiki/Intracranial_pressure