Origin of pneumoencephalography
1930–35; pneumo- + encephalography
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Radiographic visualization of the cerebral ventricles and subarachnoid spaces after the injection of air or gas.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.