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English definition of “PET scan”

PET scan

noun [C]     /ˈpet.skæn/
abbreviation for positron emission tomography scan : a medical test that can produce an image of the brain or of another part of a person's body : The researchers carried out a PET scan to monitor his brain activity .
(Definition of PET scan noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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