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zubka84 [21]
3 years ago
11

What is the product of a positron and electron combining then undergoing annihilation during the pet imaging process? a. two 511

kev photons are formed. b. x-rays are formed. c. a single gamma ray is formed. d. two high-speed beta particles are formed?
Chemistry
1 answer:
jekas [21]3 years ago
5 0
Answer is: <span>a. two 511 kEv photons are formed.
</span><span>When the positrons reach thermal energies, they start to interact with electrons by annihilation.</span>
Positron-emission tomography<span> (</span>PET)<span> is a </span>nuclear medicine functional imaging<span> technique that is used to observe metabolic processes in the body. The system detects pairs of </span>gamma rays<span> emitted indirectly by a </span>positron<span>-emitting </span>radionuclide.
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