Tc-99m
Technetium-99m
- Display half-life
- 6.01 hours
- Common use note
- Common general nuclear medicine imaging tracer.
Training reference
Half-Life References
Search isotope half-life reference values for educational and training use. Verify independently and follow institutional protocol.
Half-life reference
Filter by isotope symbol or name. Values are displayed from the project reference data.
Formula note: Reference values are for education and training. Verify values against current institutional or manufacturer sources before real-world use.
F-18
Fluorine-18
- Display half-life
- 109.8 minutes
- Common use note
- Common PET radionuclide, including FDG examples.
I-123
Iodine-123
- Display half-life
- 13.2 hours
- Common use note
- Often used in thyroid imaging examples.
I-131
Iodine-131
- Display half-life
- 8.02 days
- Common use note
- Used in educational thyroid therapy and uptake examples.
Ga-68
Gallium-68
- Display half-life
- 67.7 minutes
- Common use note
- Common PET radionuclide for generator-based examples.
Lu-177
Lutetium-177
- Display half-life
- 6.65 days
- Common use note
- Used in educational radiopharmaceutical therapy examples.
In-111
Indium-111
- Display half-life
- 67.3 hours
- Common use note
- Used in longer-duration imaging examples.
Tl-201
Thallium-201
- Display half-life
- 73.1 hours
- Common use note
- Used in myocardial perfusion education examples.
Rb-82
Rubidium-82
- Display half-life
- 75 seconds
- Common use note
- Short half-life PET perfusion example.
N-13
Nitrogen-13
- Display half-life
- 9.97 minutes
- Common use note
- Short half-life PET example.