encephalography
noun
en·ceph·a·log·ra·phy in-ˌse-fə-ˈlä-grə-fē 
: radiography of the brain after the cerebrospinal fluid has been replaced by a gas (such as air)
Example Sentences
Recent Examples on the Web The spatial resolution of the two encephalography technologies is notoriously imprecise, however, because the recordings are made through the scalp. 
Dana G. Smith, Scientific American, 17 Mar. 2022
Dana G. Smith, Scientific American, 17 Mar. 2022 Word History
First Known Use
1922, in the meaning defined above
Medical Definition
encephalography
noun
en·ceph·a·log·ra·phy in-ˌsef-ə-ˈläg-rə-fē
plural encephalographies
: radiography of the brain after the cerebrospinal fluid has been replaced by a gas (as air)