A) MRI
B) PET
C) CAT
D) SPECT
Correct Answer: B
Solution :
Positron emission tomography (PET) is a nuclear medicine medical imaging technique which produces a three dimensional image or map of functional process m the body. A short lived radioactive tracer isotope which decays by emitting a positron chemically incorporated into a metabolically active molecule, is injected into the living subject (usually into blood circulation). There is a waiting period after which the short-lived isotope decays, emitting a positron. After travelling up to a few millimetres the positron annihilates with an electron, producing a pair of annihilation photons (similar to gamma rays) moving in opposite directions.You need to login to perform this action.
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