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radiographic visualization of the fluid-containing structures of the brain after cerebrospinal fluid is intermittently withdrawn by lumbar puncture and replaced by air, oxygen, or helium.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
Radiographic visualization of cerebral ventricles and subarachnoid spaces by use of gas such as air; no longer used because of CT and MRI.
[G. pneuma, air, + enkephalos, brain, + graphō, to write]
Farlex Partner Medical Dictionary © Farlex 2012
pneumoencephalographyA method of X-ray examination of the VENTRICLES of the brain in which the CEREBROSPINAL FLUID is replaced by air. This very unpleasant procedure has been rendered obsolete by CT SCANNING and MRI.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005