Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich consequence results when a positron emission tomography (PET) tracer decays?
A)Annihilation produces detectable gamma photons✓
B)Tracers emit harmful alpha particles
C)Metastability is achieved within the sample
D)Auger electrons contaminate blood samples
💡 Explanation
Annihilation radiation results because positron emission invokes matter/antimatter annihilation during decay, creating paired gamma photons moving in opposite directions; therefore A is the correct option, rather than alpha emission observed in other radioactive decays.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which limitation occurs if a telescope objective exhibits imperfections?
- Which risk increases when a gas turbine cycle experiences blade erosion?
- Which phenomenon causes the reduced reactivity of a noble gas like helium?
- During additive manufacturing of a nickel-based superalloy turbine blade operating at high temperature, which consequence results from excessive Hall-Petch strengthening?
- Which consequence results when exceeding the Curie temperature?
- Which outcome results when a silicon diode's doping profile is modified such that the depletion region becomes extremely narrow?