Study checklist
24.3 PET scanning
Checklist
24.3.2—That a tracer that decays by β+ decay is used in positron emission
24.3.3—Annihilation occurs when a particle interacts with its antiparticle and that
24.3.4—That, in PET scanning, positrons emitted by the decay of the tracer
24.3.5—The energy of the gamma-ray photons emitted during the annihilation of an
24.3.6—The gamma-ray photons from an annihilation event travel outside the body and
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