"The only proven methods of measuring intracranial pressure are invasive: the spinal tap or drilling a hole into the skull." Sounds like we need to test/prove

"The only proven methods of measuring intracranial pressure are invasive: the spinal tap or drilling a hole into the skull." Sounds like we need to test/prove something new. I did some searching for a wireless intracranial pressure sensor and didn't find anything, but I bet you could make one. The sensor could be a pair of capacitor plates on the inside of a sealed cavity in a flexible material, with an antenna attached, such that the capacitance changes as the cavity is squeezed by the pressure around it. To make a measurement, you'd use an external antenna to hit the sensor antenna with an impulse, which would cause it to ring at a frequency proportional to the pressure it's monitoring. Very simple, no batteries, could be made very small... [edit] Oh hey, they mention implanted devices. I guess I should have finished reading the article before posting.