gammagram

gam·ma·gram

(gam'ă-gram),
Archaic term for scintiscan.

gammagram

A popular term for a scintigram.
References in periodicals archive ?
These are called alphagrams, betagrams and gammagrams where, respectively, the first, second, and third letters change.
These are alphagrams, betagrams, gammagrams, and so on, where the letter change involves two neighboring letters of the alphabet.