/ Thesaurus / P Synonyms of positron emission tomography Find synonyms for: Noun1. positron emission tomography, PET, imaging, tomographyusage: using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language