Encephalogram and X-ray picture

Encephalogram noun - An X ray of the brain made by replacing spinal fluid with a gas (usually oxygen) to improve contrast.

X-ray picture and encephalogram are semantically related. In some cases you can use "X-ray picture" instead a noun "Encephalogram".

X-ray picture noun - A radiogram made by exposing photographic film to X rays; used in medical diagnosis.

Encephalogram and X-ray picture are semantically related. Sometimes you can replace term "Encephalogram" with "X-ray picture", this terms are similar.