Table 1.
Available radiotracers and corresponding half-lives, decay mode and major γ emission energy for NIS-mediated imaging with SPECT of PET instrumentation.
| Imaging modality | Radiotracer | Half-life | Decay mode | Major γ emission energy (MeV) |
|---|---|---|---|---|
| SPECT | 123I | 13.2 h | EC | 0.159 |
| 125I | 59.4 d | EC | 0.027 | |
| 131I | 8.0 d | β− | 0.364 | |
| 99mTc | 6.0 h | IT | 0.140 | |
| 188Re | 17.0 h | β− | 0.155 | |
| PET | 124I | 4.2 d | β+ | 0.511 |
| 18F | 109.8 m | β+ | 0.511 |
Major γ emission energy is the mean energy with the greatest percentage of emission.
Created with data taken from [81].
d: day; h: hour; m: minute; β−: beta decay; β+: positron decay; EC: electron capture; IT: isomeric transition; SPECT: single-photon emission computed tomography; PET: positron emission tomography.