Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun pneumoencephalogram

1 sense of pneumoencephalogram

Sense 1
encephalogram, pneumoencephalogram -- (an X ray of the brain made by replacing spinal fluid with a gas (usually oxygen) to improve contrast)
       => roentgenogram, X ray, X-ray, X-ray picture, X-ray photograph -- (a radiogram made by exposing photographic film to X rays; used in medical diagnosis)