encephalography /ensef′əlog″rəfē/ , (Obsolete) a procedure no longer performed that resulted in radiographic delineation of the structures of the brain containing fluid after the cerebrospinal fluid was withdrawn and replaced by a gas, such as air, helium, or oxygen. The procedure was used mainly for indicating the site of cerebrospinal fluid obstruction in hydrocephalus or structural abnormalities of the posterior fossa. Compare echoencephalography, electroencephalography. −encephalographic, adj.
