Applications: Medicine, Energy, and Industry
Major Applications
Medical imaging and therapy
Nuclear physics supports diagnostic imaging such as PET and SPECT, as well as therapies that use targeted radiation to damage tumor cells. The choice of isotope depends on radiation type, half-life, and biological behavior.
Application areas
| Area | Example |
|---|---|
| Medicine | PET imaging |
| Energy | Nuclear power |
| Industry | Radiography and gauging |
| Research | Isotope tracing |
| Agriculture | Food irradiation and mutation breeding |
Risk and benefit
The same radiation that makes nuclear technologies useful can also cause biological damage, so shielding, dose control, and procedure design are essential.
Medical isotope choices
Why are short half-life isotopes often preferred in medicine?
A short half-life can reduce the duration of exposure while still allowing the procedure to be completed.
Correct answer: They reduce unnecessary radiation dose
Name one medical imaging technique based on nuclear physics.
Both techniques rely on radioactive tracers and emitted radiation.
Correct answer: PET or SPECT
What is a key use of nuclear radiography in industry?
Radiography can reveal flaws or hidden structures inside materials.
Correct answer: Inspecting internal structures
What is the main advantage of isotope tracing?
A tracer can reveal flow, uptake, or reaction pathways.
Correct answer: it follows material through a system without changing its chemistry much