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A member asked:
A pet scan with contrast shows changes at the molecular level. so, why is it that a lesion larger than 2 cm's did not show up at all on a ct?
A doctor has provided 1 answer
Glucose: A PET scan actually shows changes due to sugar uptake. So if a "lesion" does not "eat sugar," it won't be seen at PET.
Answered 8/1/2015
2.5k views
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