encephalography
noun
- radiographic examination of the brain in which some of the cerebrospinal fluid is replaced with air or another gas that acts as a contrast medium
Wiktionary
Pronunciation: /ɛnˌsɛfəˈlɒɡɹəfi/
noun
Etymology: From encephalo- + -graphy.
- An X-ray examination of the brain in which air replaces some of the cerebrospinal fluid to act as a contrast medium