An examination of the brain and mapping the result.
Any of various techniques for recording the structure of the brain or the activity of the brain cells. Examples are echoencephalography, electroencephalography, and pneumoencephalography.
Radiography of the head, especially examination following the introduction of air into the ventricles through a lumbar or cisternal puncture. This procedure is no longer performed.
X-ray examinations of the brain conducted following the replacement of a portion of the cerebrospinal fluid through air injections.