echoencephalogram

/ˌɛkoʊɛnˈsɛfələˌɡræm/
noun
  1. A medical test that uses sound waves to create an image of the brain, used to check for problems such as bleeding or tumors.
    • An echoencephalogram is a painless and quick way to examine the brain.
    • The doctor ordered an echoencephalogram after the patient hit his head.
    • The results of the echoencephalogram showed no signs of injury.