CAIE A-Level Physics 24.3.2 β⁺-Emitting Tracers in PET
Practise identifying β⁺ decay as the source of positrons in PET, and explaining how a radioactive tracer produces the medical scan.
- Syllabus
- 2028–2030
- Course
- Physics 9702
- Level
- A2
Exam points
- explain how a β⁺-emitting tracer introduces positrons during PET scanning
- identify PET scanning as the medical application of β⁺ tracer decay
24.3.2—That a tracer that decays by β+ decay is used in positron emission question 1
[Maximum number: 1]
Positronium is highly unstable, and after a very short period of time it becomes gamma radiation.
State one medical application of the process described in (c)(i).
PET scanning
B1
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