Which invention made possible the production of human-made radioactive tracers?

Which invention made possible the production of human-made radioactive tracers?

• A. PET scanner
• B. Gamma camera
• C. SPECT camera
• D. Cyclotron

Answer: (D)

The cyclotron enables on-site production of short-lived radioactive isotopes used as tracers. It’s a particle accelerator that bombards stable target nuclei with protons (and other particles) to create radionuclides such as fluorine-18, carbon-11, and others. These human-made isotopes are then incorporated into biologically active molecules to form tracers used in PET imaging. Because these isotopes decay quickly, they must be produced close to the imaging facility, which is precisely what a cyclotron makes feasible. Imaging devices like PET scanners, gamma cameras, and SPECT cameras detect the radiation from these tracers but do not create them themselves.

The cyclotron enables on-site production of short-lived radioactive isotopes used as tracers. It’s a particle accelerator that bombards stable target nuclei with protons (and other particles) to create radionuclides such as fluorine-18, carbon-11, and others. These human-made isotopes are then incorporated into biologically active molecules to form tracers used in PET imaging. Because these isotopes decay quickly, they must be produced close to the imaging facility, which is precisely what a cyclotron makes feasible. Imaging devices like PET scanners, gamma cameras, and SPECT cameras detect the radiation from these tracers but do not create them themselves.